US3934780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making tubular containers
Assignee: Crown Packaging UK Ltd
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Filing: 1974-08-26
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Granted: 1976-01-27
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Expires: 1994-08-26
Abstract
Abstract The present tubular containers, for example for foodstuffs, toothpaste, or the like, have a top cap secured to an initially open ended tubular body by means of a heat bond such as soldering where metal containers are involved or welding or fusing where plastics materials are involved. The heat for making the bond is generated by friction resulting from relative rotation between the cap and the tubular body. For this purpose, a tool is provided with a rotatably supported counter presser forming an inner holding member and with a rotating presser tool forming an outer holding member which holding members hold the cap therebetween so that its outer rim contacts the edge of the tubular body to produce frictional heat when the cap and tubular body are rotated relative to each other, said frictional heat being sufficient to cause said bond.
Inventors
- 👤 Valere Flax
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:13
CPC Classifications
B; B29; B29C; B29C65/00; B29C65/02; B29C65/06; B29C65/0672; B29C66/00; B29C66/01; B29C66/05; B29C66/10; B29C66/11; B29C66/112; B29C66/1122; B29C66/118; B29C66/12; B29C66/122; B29C66/1222; B29C66/1224; B29C66/124; B29C66/1244; B29C66/12441; B29C66/50; B29C66/51; B29C66/53; B29C66/534; B29C66/5344; B29C66/61; B29C66/612; B29C66/63; B29C66/80; B29C66/83; B29C66/832; B29C66/8322; B65; B65D; B65D35/00; B65D35/02; B65D35/12; B29C66/70; B29C66/71; B29L; B29L2031/00; B29L2031/712
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
239 words
An apparatus for bonding a cap to one end of an open ended tubular body along a joining seam adjacent one end of said tubular body by applying heat to said seam, comprising first means for holding said tubular body, said first holding means having a longitudinal axis, second means for holding said cap in axial alignment with said first holding means relative to said longitudinal axis, means for axially moving said first and second holding means axially relative to each other, pressure menas for pressing said holding means axially relative to each other to bring the cap into frictional contact with said tubular body along said seam, drive means operatively connected to at least one of said holding means for positively rotating one of said holding means relative to the other to produce sufficient bonding heat by friction between the cap and the tubular body, wherein said second holding means comprise an outer holding member and an inner holding member, a housing, means for rotatably and axially movably supporting said outer holding member in said housing, and means for rotatably supporting said inner holding member inside said tubular body in axial alignment with said outer holding member to receive said cap between the inner and outer holding members, and wherein said pressure means are located between said outer holding member and said housing for pressing the outer holding member and thus the cap against the inner holding member.
Claim 2
Independent Claim
239 words
An apparatus for bonding a cap to one end of an open ended tubular body along a joining seam adjacent one end of said tubular body by applying heat to said seam, comprising first means for holding said tubular body, said first holding means having a longitudinal axis, second means for holding said cap in axial alignment with said first holding means relative to said longitudinal axis, means for axially moving said first and second holding means axially relative to each other, pressure menas for pressing said holding means axially relative to each other to bring the cap into frictional contact with said tubular body along said seam, drive means operatively connected to at least one of said holding means for positively rotating one of said holding means relative to the other to produce sufficient bonding heat by friction between the cap and the tubular body, wherein said second holding means comprise an outer holding member and an inner holding member, a housing, means for rotatably and axially movably supporting said outer holding member in said housing, and means for rotatably supporting said inner holding member inside said tubular body in axial alignment with said outer holding member to receive said cap between the inner and outer holding members, and wherein said pressure means are located between said outer holding member and said housing for pressing the outer holding member and thus the cap against the inner holding member.
Claim 3
Dependent Claim
22 words
The apparatus according to claim 1, wherein said first holding means comprise a stationary, cylindrical housing for receiving said tubular body therein.
Claim 4
Dependent Claim
22 words
The apparatus according to claim 1, wherein said first holding means comprise a stationary, cylindrical mandrel for receiving said tubular body thereon.
Claim 5
Dependent Claim
56 words
The apparatus according to claim 1, wherein said inner holding member has a circumferential surface facing said cap which circumferential surface is inclined relative to said rotational axis such that the diameter of the inner holding member increases as the axial spacing from said outer holding member increases, whereby the diameter of the cap is increased.
Claim 6
Dependent Claim
25 words
The apparatus according to claim 1, wherein said outer holding member has a cap facing surface which conforms to the outer surface of the cap.
Claim 7
Dependent Claim
39 words
The apparatus according to claim 1, wherein said means for axially and movably supporting said holding means comprise a shaft axially secured to said outer holding member and axial movement permitting means in said housing for receiving said shaft.
Claim 8
Dependent Claim
47 words
The apparatus according to claim 1, wherein said drive means are operatively connected to said outer holding member, said apparatus comprising inlet and outlet port means in said housing for admitting a fluid under pressure to lubricate said outer holding member as it rotates in said housing.
Claim 9
Dependent Claim
26 words
The apparatus according to claim 1, wherein said pressure means comprise an elastomeric ring located to bias said inner and outer holding members toward each other.
Claim 10
Dependent Claim
39 words
The apparatus according to claim 8, wherein said means for rotatably supporting said outer holding member comprise bearing means located between said elastomeric ring and said outer holding member whereby said elastomeric ring remains stationary relative to said housing.
Claim 11
Dependent Claim
51 words
The apparatus according to claim 1, wherein said housing for said outer holding member comprises a skirt and an inner shoulder separating said skirt from said housing proper, said skirt receiving at least a portion of said tubular body whereby a free edge of said tubular body rests against said shoulder.
References Cited (Backward Citations)
US3446688A
Cited
US3824145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |