US4462849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of oscillatory bonding
Assignee: Packaging Resources Inc
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Filing: 1982-04-23
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Granted: 1984-07-31
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Expires: 2002-04-23
Abstract
Abstract Methods and apparatus are disclosed for the bonding together of two similarly shaped articles of similar thermoplastic material utilizing oscillatory motion between the two articles to generate frictional heat therein sufficient to form an hermetic seal therebetween.
Inventors
- 👤 Donald MacLaughlin
- 👤 Vincent Fortuna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:48
CPC Classifications
B; B29; B29C; B29C66/00; B29C66/01; B29C66/05; B29C66/302; B29C66/3022; B29C66/30223; B29C65/00; B29C65/02; B29C65/06; B29C65/0609; B29C65/0618; B29C65/72; B29C65/78; B29C65/7841; B29C65/7847; B29C65/7858; B29C65/7879; B29C65/7882; B29C65/7885; B29C66/10; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/124; B29C66/1244; B29C66/12441; B29C66/1246; B29C66/12463; B29C66/50; B29C66/51; B29C66/54; B29C66/542; B29C66/65; B29C66/70; B29C66/71; B29C66/712; B29C66/73; B29C66/731; B29C66/7311; B29C66/73115; B29C66/739; B29C66/7392; B29C66/73921; B29C2793/00; B29C51/00; B29C51/10; B29C65/0672; B29C65/08; B29C65/10; B29C65/106; B29C65/14; B29C65/1403; B29C65/1412; B29C65/1425; B29C65/1429; B29C65/1432; B29C65/56; B29C65/565; B29C66/737; B29C66/7377; B29C66/73771; B29C66/73772; B29C66/73775; B29C66/73776; B29L; B29L2031/00; B29L2031/712; Y; Y10; Y10T; Y10T156/00; Y10T156/17; Y10T156/1702; Y10T156/1744; Y10T156/1768; Y10T156/1771
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
82 words
A method of welding at least two similarly configured themoplastic sections together having relatively tight-fitting complementary joinder portions, said method comprising: sliding said tight-fitting portions together into telescopic conjoinment; oscillating said portions axially with respect to each other at a sufficiently rapid rate and for a sufficient period of time to generate enough heat to melt the areas of contact therebetween; and, bringing said sections into a final desirable position and allowing said heated areas to cool, thereby welding said sections together.
Claim 2
Independent Claim
82 words
A method of welding at least two similarly configured themoplastic sections together having relatively tight-fitting complementary joinder portions, said method comprising: sliding said tight-fitting portions together into telescopic conjoinment; oscillating said portions axially with respect to each other at a sufficiently rapid rate and for a sufficient period of time to generate enough heat to melt the areas of contact therebetween; and, bringing said sections into a final desirable position and allowing said heated areas to cool, thereby welding said sections together.
Claim 3
Dependent Claim
17 words
The method of claim 1 wherein said thermoplastic sections are sized to provide an interference fit therebetween.
Claim 4
Dependent Claim
27 words
The method of claim 1 or claim 2 wherein said thermoplastic sections are made from organic thermoplastic resins each having melt temperatures relatively close to the other.
Claim 5
Dependent Claim
18 words
The method of claim 1 or claim 2 wherein said thermoplastic sections are made from identical organic resins.
Claim 6
Independent Claim
114 words
A method of forming a container from at least two thermoplastic sections each having a non-circular cross-sectional configuration which closely matches the other section, said method comprising: clamping said container sections into separate holder means providing axial telescopic alignment of the sections with each other; oscillating at least one of said holder means at a sufficiently rapid rate for a sufficient period of time, while maintaining said sections in telescoped arrangement, to generate enough heat to melt the contact areas therebetween; bringing said telescoped sections to a final preselected desirable position with respect to each other while still partially melted; and, allowing said heated areas to cool sufficiently to solidify said heated thermoplastic areas.
Claim 7
Independent Claim
114 words
A method of forming a container from at least two thermoplastic sections each having a non-circular cross-sectional configuration which closely matches the other section, said method comprising: clamping said container sections into separate holder means providing axial telescopic alignment of the sections with each other; oscillating at least one of said holder means at a sufficiently rapid rate for a sufficient period of time, while maintaining said sections in telescoped arrangement, to generate enough heat to melt the contact areas therebetween; bringing said telescoped sections to a final preselected desirable position with respect to each other while still partially melted; and, allowing said heated areas to cool sufficiently to solidify said heated thermoplastic areas.
Claim 8
Dependent Claim
38 words
The method of claim 5 wherein at least one of said sections is an organic polymer selected from the group consisting of styrenes, polystyrenes, propylenes, polypropylenes, acrylonitriles, lexans, polyethylene, high density polyethylene, polyethylene terephthalate, and polyethylene terephthalate glycol.
Claim 9
Dependent Claim
27 words
The method of claim 5 or claim 6 wherein said thermoplastic sections are made of thermoplastic materials having melt temperatures within about 30° F. of each other.
Claim 10
Dependent Claim
27 words
The method of claim 5 or claim 6 wherein said oscillating step is performed at a frequency of from about 120 to about 240 cycles per second.
Claim 11
Dependent Claim
27 words
The method of claim 5 or claim 6 wherein said oscillating step is performed at a frequency of from about 20,000 to about 40,000 cycles per second.
Claim 12
Dependent Claim
30 words
The method of claim 5 or claim 6 wherein said oscillating step is performed at a frequency of from about 50 cycles per second to about 50,000 cycles per second.
Claim 13
Dependent Claim
18 words
The method of claim 5 wherein said thermoplastic sections are made from at least one amorphous organic resin.
Claim 14
Dependent Claim
18 words
The method of claim 5 wherein said thermoplastic sections are made from at least one crystalline organic resin.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-31 | 1988-01-30 | 1988-07-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-31 | 1992-01-30 | 1992-07-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-31 | 1996-01-30 | 1996-07-31 | $7700.00 | Window Closed / Lapsed |