Dripless vacuum nozzle

Claim 2

A dripless vacuum nozzle comprising: a. a barrel; b. an upper nozzle section having a passageway therethrough, said upper section being coaxially positioned within said barrel and resiliently connected thereto; c. a lower nozzle section having an upper peripheral wall defining a moisture collecting cup, said cup having a diameter sufficient to receive a lower extremity of said upper section, and said lower section having a passageway therethrough; d. a valve pivot member having an open valve seat therein, said pivot member being connected to the lower extremity of said upper section and said open valve seat being alinged with the passageway in said upper section; e. resilient means connecting said pivot member and said lower section; f. a ball valve member disposed on the upper surface of said lower section, said ball member being aligned to fit in said valve seat and to close same, and the height of said ball member with respect to said pivot member being such that the lower nozzle section tilts from vertical alignment within said barrel when said ball valve is closed; g. check valve means in the passageway in said lower section, said check valve means opening and closing in response to differential air pressure whereby, when said lower section is tilted so that it is vertical, air can be withdrawn through the passageway in said upper portion, through said ball valve, and through said passageway in said lower section to open said check valve thereby making a complete evacuation path to the lower tip of said lower section.

Claim 3

The dripless nozzle of claim 1 wherein the lower portion of said lower section is flared outwardly to form a plunger haVing a greater diameter than said barrel whereby said barrel and said plunger form a clamp.

Claim 4

The dripless nozzle of claim 1 wherein said resilient means is a coil spring.

Claim 5

A dripless nozzle comprising: a. a housing; b. a barrel slidably mounted within said housing; c. an upper nozzle section connected to said housing and disposed in the upper portion of said barrel, said upper section having a central passageway therethrough; d. first spring means connecting said barrel to said upper nozzle section; e. a pivot member attached to the bottom of said upper section, said pivot member having a valve seat therein aligned with the passageway in said upper section; f. a lower nozzle section having a vertical peripheral wall surrounding its upper surface, said lower section having an opening in its lower surface connecting to a continuous passageway which opens on said lower section''s upper surface, and the lower portion of said lower section flaring outwardly to a diameter greater that than of said barrel to form a clamping plunger; g. second spring means connecting said peripheral wall to said pivot member; h. a valve ball in the upper surface of said lower section situated to close the valve seat in said pivot member; said valve ball and said second spring means co-operating to tilt said lower section from vertical when said valve ball closes said valve seat; and, i. a check valve in the passageway of said lower section, said check valve opening in response to a decrease in upstream air pressure and closing when the upstream and downstream pressures equalize; and, j. vacuum means for applying negative air pressure through the passageway in said upper nozzle section whereby when the neck of a filled bag is placed around said barrel and said lower section is made vertical, said valve ball will open admitting the vacuum in said passageway into the barrel and lower section passageway causing the housing to descend and clamp the bag neck between said plunger and housing and also causing the check valve to open to completely evacuate said bag and upon completion of the evacuation of the bag the check valve closes thereby preventing moisture from dripping into said bag.

Claim 6

A dripless nozzle comprising: a. a housing; b. a barrel slidably mounted within said housing; c. an upper nozzle section connected to said housing and disposed in the upper portion of said barrel, said upper section having a central passageway therethrough; d. first spring means connecting said barrel to said upper nozzle section; e. a pivot member attached to the bottom of said upper section, said pivot member having a valve seat therein aligned with the passageway in said upper section; f. a lower nozzle section having a vertical peripheral wall surrounding its upper surface, said lower section having an opening in its lower surface connecting to a continuous passageway which opens on said lower section''s upper surface, and the lower portion of said lower section flaring outwardly to a diameter greater that than of said barrel to form a clamping plunger; g. second spring means connecting said peripheral wall to said pivot member; h. a valve ball in the upper surface of said lower section situated to close the valve seat in said pivot member; said valve ball and said second spring means co-operating to tilt said lower section from vertical when said valve ball closes said valve seat; and, i. a check valve in the passageway of said lower section, said check valve opening in response to a decrease in upstream air pressure and closing when the upstream and downstream pressures equalize; and, j. vacuum means for applying negative air pressure through the passageway in said upper nozzle section whereby when the neck of a filled bag is placed around said barrel and said lower section is made vertical, said valve ball will open admitting the vacuum in said passageway into the barrel and lower section passageway causing the housing to descend and clamp the bag neck between said plunger and housing and also causing the check valve to open to completely evacuate said bag and upon completion of the evacuation of the bag the check valve closes thereby preventing moisture from dripping into said bag.

Claim 7

The dripless nozzle of claim 4 including means for introducing compressed air into said barrel to release the clamp between said plunger and said housing.

Claim 8

The dripless nozzle of claim 4 wherein the lower portion of said upper section is positioned within said peripheral wall and both of said spring means are coil springs.

Claim 9

A dripless vacuum nozzle comprising: a. upper and lower nozzle sections, each section having a vertical passageway therethrough; b. an upper peripheral wall on said lower section defining a moisture collecting cup, said cup having a diameter sufficient to receive the lower portion of said upper section; c. a ball member affixed to said lower section within said cup; d. a valve pivot member connected to the lower extremity of said upper section, said pivot member having a valve seat therein aligned with said ball member and with the passageway in said upper section; and, e. resilient means connecting said pivot member and said lower section and holding said ball member against said valve seat whereby when said lower section is pivoted said ball member is moved away from said valve seat allowing communication between the passageways in said upper and lower nozzle sections.

Claim 10

A dripless vacuum nozzle comprising: a. upper and lower nozzle sections, each section having a vertical passageway therethrough; b. an upper peripheral wall on said lower section defining a moisture collecting cup, said cup having a diameter sufficient to receive the lower portion of said upper section; c. a ball member affixed to said lower section within said cup; d. a valve pivot member connected to the lower extremity of said upper section, said pivot member having a valve seat therein aligned with said ball member and with the passageway in said upper section; and, e. resilient means connecting said pivot member and said lower section and holding said ball member against said valve seat whereby when said lower section is pivoted said ball member is moved away from said valve seat allowing communication between the passageways in said upper and lower nozzle sections.

Claim 11

The dripless vacuum nozzle of claim 7 including check valve means in said lower section, said check valve means opening and closing in response to differential air pressure.