Patent US3757924A successfully refreshed from Google Patents.
US3757924A
Expired / Lapsed
US
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Chain driven machinery
Assignee: OI Glass Inc
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Filing: 1971-09-30
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Granted: 1973-09-11
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Expires: 1991-09-30
Abstract
Abstract In chain driven machinery, a pair of endless chains, each of which has work elements thereon. Portions of the chains are moved in parallel relation to one another. Means are provided for maintaining a predetermined pitch length between the elements of the chains along the parallel portion.
Inventors
- 👤 L Yakubek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:52
CPC Classifications
H; H02; H02P; H02P5/00; H02P5/46; B; B23; B23Q; B23Q7/00; B23Q7/16; B65; B65G; B65G23/00; B65G2811/00; B65G2811/09; B65G2811/091; B65G2811/092
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
139 words
The combination comprising an endless conveyor having a plurality of pivotally interconnected elements, means for supporting said conveyor for movement in an endless path, at least some of said elements of said conveyor being adapted to move a work element in a predetermined path, a first rotary element for engagement with said conveyor at one point in advance of a portion of said path and a second rotary element for engaging said conveyor beyond said portion of the path, means for controlling the speed of said first and second rotary elements such that they rotate at the same speed, and means for momentarily changing the rotary orientation of one of said first and second elements with respect to the other, thereby maintaining a predetermined pitch length between the elements of the conveyor along the said portion of said path.
Claim 2
Dependent Claim
139 words
The combination comprising an endless conveyor having a plurality of pivotally interconnected elements, means for supporting said conveyor for movement in an endless path, at least some of said elements of said conveyor being adapted to move a work element in a predetermined path, a first rotary element for engagement with said conveyor at one point in advance of a portion of said path and a second rotary element for engaging said conveyor beyond said portion of the path, means for controlling the speed of said first and second rotary elements such that they rotate at the same speed, and means for momentarily changing the rotary orientation of one of said first and second elements with respect to the other, thereby maintaining a predetermined pitch length between the elements of the conveyor along the said portion of said path.
Claim 3
Dependent Claim
86 words
The combination comprising an endless conveyor having a plurality of pivotally interconnected elements, means for supporting said conveyor for movement in an endless path, at least some of said elements of said conveyor being adapted to move a work element in a predetermined path, means for changing the longitudinal spacing of one said element with respect to another at longitudinally spaced points, and a mechanical differential connected to said rotary elements for controlling the speed of two longitudinally spaced elements such that they are the same.
Claim 4
Dependent Claim
86 words
The combination comprising an endless conveyor having a plurality of pivotally interconnected elements, means for supporting said conveyor for movement in an endless path, at least some of said elements of said conveyor being adapted to move a work element in a predetermined path, means for changing the longitudinal spacing of one said element with respect to another at longitudinally spaced points, and a mechanical differential connected to said rotary elements for controlling the speed of two longitudinally spaced elements such that they are the same.
References Cited (Backward Citations)
US2918020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |