Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
293 words
A mold for injection molding and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction toward the second mold part, and a base-forming portion of the second mold part includes a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; and wherein the mold cavity includes flow channels for directing injected plastic material from the base-forming portion of the mold cavity toward the rim-forming portion of the mold cavity, with the mold cavity thickness at the flow channels being generally thicker than the prevailing mold cavity thickness between the flow channels, and with at least certain particular said flow channels having a mold cavity thickness that is significantly thicker than double said prevailing mold cavity thickness between said flow channels when the first and second mold parts are aligned and assembled.
Claim 2
Dependent Claim
293 words
A mold for injection molding and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction toward the second mold part, and a base-forming portion of the second mold part includes a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; and wherein the mold cavity includes flow channels for directing injected plastic material from the base-forming portion of the mold cavity toward the rim-forming portion of the mold cavity, with the mold cavity thickness at the flow channels being generally thicker than the prevailing mold cavity thickness between the flow channels, and with at least certain particular said flow channels having a mold cavity thickness that is significantly thicker than double said prevailing mold cavity thickness between said flow channels when the first and second mold parts are aligned and assembled.
Claim 3
Dependent Claim
21 words
A mold according the claim 1, wherein one end of each said certain particular flow channel is located adjacent the throttle.
Claim 4
Dependent Claim
99 words
A mold according to claim 2, wherein the first mold part is a core mold part for forming the inside of said hollow product and the second mold part in a cavity mold part for forming the outside of said product; and wherein at least one of said certain particular flow channels is shaped within the base-forming portion of the mold cavity to direct injected plastic material into the side-wall-forming portion of the mold cavity at a position located across the gate from the position where said one end of said certain particular flow channel is adjacent the throttle.
Claim 5
Dependent Claim
28 words
A mold according to claim 1, wherein the brink, when the first and second mold parts are aligned and assembled, does not project into and beyond the labrum.
Claim 6
Dependent Claim
73 words
A mold according the claim 1, wherein at least one of the mold parts defines an axial conduit and having an axially protractable and retractable ram-shaped element within the conduit, with a front portion of the ram-shaped element defining a part of the mold cavity; and wherein the mold further comprises means for retracting the ram-shaped element during injection after an initial amount of plastic material has been injected into the mold cavity.
Claim 7
Dependent Claim
107 words
A mold according to claim 1, wherein at least one of the mold parts defines an axial conduit and having an axially protractable and retractable ram-shaped element within the conduit, with a front portion of the ram-shaped element defining a part of the mold cavity for forming a portion of the base of the product when the ram-shaped element is protracted, with said formed portion of the product base defining said brink or said labrum when the ram-shaped element is retracted while retaining said portion of the base of the product formed by injection of plastic material into the mold cavity while the ram-shaped element was protracted.
Claim 8
Dependent Claim
40 words
A mold according to claim 1, wherein the base-forming portion of the mold cavity includes at least one feed channel that extends adjacent and collaterally to the throttle on the side of the throttle that is closest to the gate.
Claim 9
Dependent Claim
41 words
A mold according to claim 1, wherein the base-forming portion of the mold cavity includes at least one feed channel that extends adjacent and collaterally to the throttle on the side of the throttle that is closest to the side wall.
Claim 10
Dependent Claim
72 words
A mold according to claim 1, wherein the base-forming portion of the mold cavity includes at least two feed channels that extend adjacent and collaterally to the throttle, with at least one of said feed channels being on the side of the throttle that is closest to the gate, and with at least one of said feed channels being on the side of the throttle that is closest to the side wall.
Claim 11
Dependent Claim
73 words
A mold according to claim 1, for additionally laminating said hollow plastic product, further comprising a third mold part, which, when assembled with the first mold part by axial movement with respect to each other while the first mold part is retaining a first layer of said plastic product formed by plastic material inserted into the first mold cavity, defines a second mold cavity for forming a second layer of said plastic product.
Claim 12
Dependent Claim
185 words
A mold according to claim 10, wherein the base-forming portion of the first layer of plastic material retained by the first mold part includes a second brink or a second labrum formed in the first mold cavity by said second mold part, with said second brink or said second labrum protruding in a direction toward the third mold part, and the base-forming portion of the third mold part includes a second labrum or a second brink respectively that protrudes in a direction toward the first mold part to define a second throttle situated between said second brink and said second labrum, the second throttle having a variable width, which at any throttle position is defined by the distance between said second brink and said labrum; and wherein the second throttle width varies when the first and third mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the second mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and third mold parts into axial alignment.
Claim 13
Dependent Claim
93 words
A mold according to claim 11, wherein the first layer of plastic material is so shaped by the first mold cavity as to define secondary flow channels in the second mold cavity for directing plastic material injected into the second mold cavity from the base-forming portion of the second mold cavity toward the rim-forming portion of the second mold cavity; and wherein the second mold cavity thickness of at least certain particular said secondary flow channels is significantly thicker than double the remaining prevailing second mold cavity thickness between the secondary flow channels.
Claim 14
Dependent Claim
269 words
A mold for injection molding and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction towards the second mold part, and a base-forming portion of the second mold part includes a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; wherein at least one of the mold parts defines an axial conduit and having an axially protractable and retractable ram-shaped element within the conduit, with a front portion of the ram-shaped element defining a part of the mold cavity; and wherein the mold further comprises means for retracting the ram-shaped element during injection after an initial amount of plastic material has been injected into the mold cavity.
Claim 15
Dependent Claim
269 words
A mold for injection molding and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction towards the second mold part, and a base-forming portion of the second mold part includes a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; wherein at least one of the mold parts defines an axial conduit and having an axially protractable and retractable ram-shaped element within the conduit, with a front portion of the ram-shaped element defining a part of the mold cavity; and wherein the mold further comprises means for retracting the ram-shaped element during injection after an initial amount of plastic material has been injected into the mold cavity.
Claim 16
Dependent Claim
44 words
A mold according to claim 13, wherein the front portion of the ram-shaped element encompasses said brink or said labrum, so that the throttle width may be increased when the ram-shaped element is retracted in order to form a thicker-walled product at the throttle.
Claim 17
Dependent Claim
58 words
A mold according to claim 13, wherein the front portion of the ram-shaped element includes a contact element for contacting the other mold part in such a manner as to rigidly secure the first mold part in alignment with the second mold part when the ram-shaped element is protracted while plastic material is initially into the mold cavity.
Claim 18
Dependent Claim
61 words
A mold according to claim 13, wherein the front portion of the ram-shaped element includes a contact element shaped for contacting a large area of the other mold part when the ram-shaped element is protracted to thereby reduce the required force for clamping the mold while plastic material is initially injected into the mold cavity when the ram-shaped element is protracted.
Claim 19
Dependent Claim
83 words
A mold according the claim 13, when said front portion of the ram-shaped element defines a part of the mold cavity for forming a portion of the base of the product when the ram-shaped element is protracted, with said formed portion of the product base defining said brink or said labrum when the ram-shaped element is retracted while retaining said portion of the base of the product formed by injection of plastic material into the mold cavity while the ram-shaped element was protracted.
Claim 20
Dependent Claim
279 words
A mold for injection molding, laminating and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a first mold cavity for forming said plastic product; a third mold part, which, when assembled with the first mold part by axial movement with respect to each other while the first mold part is retaining a first layer of said plastic product formed by plastic material inserted into the first mold cavity, defines a second mold cavity for forming a second layer of said plastic product; wherein the base-forming portion of the first layer of plastic material retained by the first mold part includes a brink or a labrum formed in the first mold cavity by said second mold part, with said brink of said labrum protruding in a direction toward the third mold part, and the base-forming portion of the third mold part includes a labrum or a brink respectively that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; and wherein the throttle width varies when the first and third mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the second mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first mold parts into axial alignment.
Claim 21
Dependent Claim
279 words
A mold for injection molding, laminating and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a first mold cavity for forming said plastic product; a third mold part, which, when assembled with the first mold part by axial movement with respect to each other while the first mold part is retaining a first layer of said plastic product formed by plastic material inserted into the first mold cavity, defines a second mold cavity for forming a second layer of said plastic product; wherein the base-forming portion of the first layer of plastic material retained by the first mold part includes a brink or a labrum formed in the first mold cavity by said second mold part, with said brink of said labrum protruding in a direction toward the third mold part, and the base-forming portion of the third mold part includes a labrum or a brink respectively that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; and wherein the throttle width varies when the first and third mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the second mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first mold parts into axial alignment.
Claim 22
Dependent Claim
42 words
A mold according to claim 18, wherein the second mold cavity includes flow channels for directing plastic material injected into the second mold cavity from the base-forming portion of the second mold cavity toward the rim-forming portion of the second mold cavity.
Claim 23
Dependent Claim
165 words
A mold according to claim 18, wherein a base-forming portion of the first mold part includes a second brink that protrudes in a direction toward the second mold part, and a base-forming portion of the second mold part includes a second labrum that protrudes in a direction toward the first mold part to define a second throttle situated between said second brink and said labrum, the second throttle having a variable width, which at any throttle position is defined by the distance between said second brink and said second labrum; wherein the second mold cavity defines a gate located within an area encompassed by the second throttle; wherein the second throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the second mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment.
Claim 24
Dependent Claim
60 words
A mold according to claim 18, wherein the second mold cavity includes flow channels for directing injected plastic material from the base-forming portion of the second mold cavity toward the rim-forcing portion of the second mold cavity, with the second mold cavity thickness at the flow channels being generally thicker than the prevailing mold cavity thickness between the flow channels.
Claim 25
Dependent Claim
115 words
A mold according to claim 18, wherein in first mold cavity includes flow channels for directing injected plastic material from the base-forming portion of the first mold cavity toward the rim-forming portion of the first mold cavity, with the first mold cavity thickness at the flow channels being generally thicker than the prevailing mold cavity thickness between the flow channels; and wherein the first layer of plastic material is so shaped by the first mold cavity as to define secondary flow channels in the second mold cavity for directing plastic material injected into the second mold cavity from the base-forming portion of the second mold cavity toward the rim-forming portion of the second mold cavity.
Claim 26
Dependent Claim
225 words
A mold for injection molding and laminating a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a first mold cavity for forming said plastic product; wherein the first mold cavity includes primary flow channels for directing injected plastic material from the base-forming portion of the first mold cavity toward the rim-forming portion of the first mold cavity, with the first mold cavity thickness at the primary flow channels being generally thicker than the prevailing mold cavity thickness between the primary flow channels; the mold further comprising a third mold part, which, when assembled with the first mold part by axial movement with respect to each other while the first mold part is retaining a first layer of said plastic product formed by plastic material inserted into the first mold cavity, defines a second mold cavity for forming a second layer of said plastic product; wherein the first layer of plastic material is so shaped by the first mold cavity as to define secondary flow channels in the second mold cavity for directing plastic material injected into the second mold cavity from the base-forming portion of the second mold cavity toward the rim-forming portion of the second mold cavity.
Claim 27
Dependent Claim
225 words
A mold for injection molding and laminating a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a first mold cavity for forming said plastic product; wherein the first mold cavity includes primary flow channels for directing injected plastic material from the base-forming portion of the first mold cavity toward the rim-forming portion of the first mold cavity, with the first mold cavity thickness at the primary flow channels being generally thicker than the prevailing mold cavity thickness between the primary flow channels; the mold further comprising a third mold part, which, when assembled with the first mold part by axial movement with respect to each other while the first mold part is retaining a first layer of said plastic product formed by plastic material inserted into the first mold cavity, defines a second mold cavity for forming a second layer of said plastic product; wherein the first layer of plastic material is so shaped by the first mold cavity as to define secondary flow channels in the second mold cavity for directing plastic material injected into the second mold cavity from the base-forming portion of the second mold cavity toward the rim-forming portion of the second mold cavity.
Claim 28
Dependent Claim
266 words
A mold for injection molding, laminating and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction toward the second mold part, and a base-forming portion of the second mold part inclues a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; and wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; the mold further comprising a third mold part, which, when assembled with the first mold part by axial movement with respect to each other while the first mold part is retaining a first layer of said plastic product formed by plastic material inserted into the first mold cavity, defines a second mold cavity for forming a second layer of said plastic product.
Claim 29
Dependent Claim
266 words
A mold for injection molding, laminating and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction toward the second mold part, and a base-forming portion of the second mold part inclues a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; and wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; the mold further comprising a third mold part, which, when assembled with the first mold part by axial movement with respect to each other while the first mold part is retaining a first layer of said plastic product formed by plastic material inserted into the first mold cavity, defines a second mold cavity for forming a second layer of said plastic product.
Claim 30
Dependent Claim
186 words
A mold according to claim 24, wherein the base-forming portion of the first layer of plastic material retained by the first mold part includes a second brink or a second labrum formed in the first mold cavity by said second mold part, with said second brink or said second labrum protruding in a direction toward the third mold part, and the base-forming portion of the third mold part includes a second labrum or a second brink respectively that protrudes in a direction toward the first mold part to define a second throttle situated between said second brink and said second labrum, the second throttle having a variable width, which at any throttle position is defined by the distance between said second brink and said second labrum; and wherein the second throttle width varies when the first and third mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the second mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and third mold parts into axial alignment.
Claim 31
Dependent Claim
63 words
A mold according to claim 24, wherein the first mold cavity includes primary flow channels for directing injected plastic material from the base-forming portion of the first mold cavity toward the rim-forming portion of the first mold cavity, with the first mold cavity thickness at the primary flow channels being generally thicker than the prevailing mold activity thickness between the primary flow channels.
Claim 32
Dependent Claim
43 words
A mold according to claim 24, wherein the second mold cavity includes secondary flow channels for directing plastic material injected into the second mold cavity from the base-forming portion of the second mold cavity toward the rim-forming portion of the second mold cavity.
Claim 33
Dependent Claim
118 words
A mold according to claim 24, wherein the first mold cavity includes primary flow channels for directing injected plastic material from the base-forming portion of the first mold cavity toward the rim-forming portion of the first mold cavity, with the first mold cavity thickness at the primary flow channels being generally thicker than the prevailing mold cavity thickness between the primary flow channels; and wherein the first layer of plastic material is so shaped by the first mold cavity as to define secondary flow channels in the second mold cavity for directing plastic material injected into the second mold cavity from the base-forming portion of the second mold cavity toward the rim-forming portion of the second mold cavity.
Claim 34
Dependent Claim
225 words
A mold for injection molding and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction toward the second mold part, and a base-forming portion of the second mold part includes a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; and wherein the brink, when the first and second mold parts are aligned and assembled, does not project into and beyond the labrum.
Claim 35
Dependent Claim
225 words
A mold for injection molding and controlling the dimensions of a hollow plastic product having a rim, a base and a side wall therebetween, comprising a first mold part and a second mold part, which when assembled by axial movement with respect to each other, define a mold cavity for forming said plastic product; wherein a base-forming portion of the first mold part includes a brink that protrudes in a direction toward the second mold part, and a base-forming portion of the second mold part includes a labrum that protrudes in a direction toward the first mold part to define a throttle situated between said brink and said labrum, the throttle having a variable width, which at any throttle position is defined by the distance between said brink and said labrum; wherein the mold cavity defines a gate located within an area encompassed by the throttle; wherein the throttle width varies when the first and second mold parts are not axially aligned to thereby, during injection, admit more material into the side wall-forming portion of the mold cavity that is the thinnest as a result of said axial misalignment, for the purpose of forcing the first and second mold parts into alignment; and wherein the brink, when the first and second mold parts are aligned and assembled, does not project into and beyond the labrum.