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US3598298A
Expired / Lapsed
US
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Web conveyor apparatus
Assignee: Dart Container Corp
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Filing: 1969-11-12
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Granted: 1971-08-10
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Expires: 1989-11-12
Abstract
Abstract Web conveyor apparatus for use in feeding a generally vertically oriented heated web of thermoplastic material to a container molding station wherein there is provided a plurality of conveyor clip devices which are mounted for movement along a predetermined path immediately above the upper margin of the web of thermoplastic material, each conveyor clip device including positive gripping and release features which assure accurate predetermined feeding of the web.
Inventors
- 👤 Walter C Diener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:44
CPC Classifications
B; B29; B29C; B29C51/00; B29C51/26; B29C51/261; B65; B65H; B65H20/00; B65H20/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
A conveyor clip device for use in feeding a generally vertically oriented heated web of thermoplastic material to a container-molding station comprising means for mounting said conveyor clip device immediately above the upper margin of said web for movement therealong, a pair of spring-biased clamping elements depending from said mounting means and having cooperating lower tip portions for engaging limited areas on opposite surfaces of said web along the upper margin thereof, spreader means carried on said mounting means for limited reciprocating movement and positioned between and engaging said pair of clamping elements Above said tip portions, whereby said tip portions are opened and closed responsive to reciprocating movement of said spreader means.
Claim 2
Dependent Claim
113 words
A conveyor clip device for use in feeding a generally vertically oriented heated web of thermoplastic material to a container-molding station comprising means for mounting said conveyor clip device immediately above the upper margin of said web for movement therealong, a pair of spring-biased clamping elements depending from said mounting means and having cooperating lower tip portions for engaging limited areas on opposite surfaces of said web along the upper margin thereof, spreader means carried on said mounting means for limited reciprocating movement and positioned between and engaging said pair of clamping elements Above said tip portions, whereby said tip portions are opened and closed responsive to reciprocating movement of said spreader means.
Claim 3
Dependent Claim
70 words
A conveyor clip device as defined in claim 1, wherein said spring-biased clamping elements immediately above said tip portions are formed to diverge upwardly, and the lower end of said spreader means comprising a head portion formed to have downward converging surfaces cooperating with the upwardly diverging portions of said spring-biased clamping elements so that said tip portions are opened and closed responsive to reciprocating movement of said spreader means.
Claim 4
Dependent Claim
57 words
A conveyor clip device as defined in claim 2, wherein the upwardly diverging portions of said spring-biased elements are provided with vertically extending slots therethrough, and said head portion of said spreader means having wing elements mounted thereon and positioned within said slots for reciprocating movement within said slots responsive to reciprocating movement of said spreader means.
Claim 5
Dependent Claim
48 words
In combination, a plurality of conveyor clip devices as defined in claim 1, an endless mechanism for carrying said devices, said mounting means of said devices carrying said devices on said endless mechanism in a spaced predetermined relationship to each other, and means for moving said spreader means.
References Cited (Backward Citations)
US1861282A
Cited
US3029007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-09 | 1975-02-08 | 1975-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-09 | 1979-02-08 | 1979-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-09 | 1983-02-08 | 1983-08-10 | $7700.00 | Window Closed / Lapsed |