Patent US3552538A successfully refreshed from Google Patents.
US3552538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turnover mechanisms
Assignee: RYEMOR ENGINEERING Ltd
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Filing: 1968-05-24
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Granted: 1971-01-05
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Expires: 1988-05-24
Abstract
Abstract A mechanism for turning over relatively flat articles being advanced by a conveyor, which includes means for lifting the front of each article upwardly, when it reaches a predetermined point, to pivot about its rear edge resting upon the conveyor, means for engaging the rear edge to prevent sliding movement of the article in a direction opposite to the direction of motion of the conveyor, and support means for receiving the article when it overbalances about its rear edge, the said lifting means thereafter being lowered to control forward sliding movement of the edge, initially the rear one but now the forward one, of the article.
Inventors
- 👤 Henry Francis Triggs
- 👤 Frank Bert Lawton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:44
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/22; B65G47/24; B65G47/248; B65G47/252
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
225 words
A mechanism for turning over relatively flat articles having front and rear edges, including a continuously movable conveyor for advancing articles, a pair of first lifting arms for lifting the front edge of each article upwardly from the conveyor, when such article reaches a predetermined point, to pivot such article about its rear edge resting upon the conveyor, said first lifting arms extending longitudinally of the conveyor and normallY being positioned beneath the conveyor, pivot means for mounting the first arms for upward movement about an axis located upstream of the first arms, a pair of second arms for engaging the rear edge of the article on the conveyor for preventing sliding movement thereof in a direction in opposition to the direction of movement of the conveyor, said second arms extending longitudinally of the conveyor and normally lying beneath the conveyor, said second arms being mounted on said pivot means for upward rotation about the axis located upstream of the first arms support means for receiving the article operably related to the conveyor and above the conveyor for receiving the article when it overbalances about its rear edge, said lifting arms thereafter being lowered to control forward sliding movement of the rear edge of the article, and means operably connected with said first and second arms for effecting upward movement of said arms in synchronism.
Claim 2
Dependent Claim
225 words
A mechanism for turning over relatively flat articles having front and rear edges, including a continuously movable conveyor for advancing articles, a pair of first lifting arms for lifting the front edge of each article upwardly from the conveyor, when such article reaches a predetermined point, to pivot such article about its rear edge resting upon the conveyor, said first lifting arms extending longitudinally of the conveyor and normallY being positioned beneath the conveyor, pivot means for mounting the first arms for upward movement about an axis located upstream of the first arms, a pair of second arms for engaging the rear edge of the article on the conveyor for preventing sliding movement thereof in a direction in opposition to the direction of movement of the conveyor, said second arms extending longitudinally of the conveyor and normally lying beneath the conveyor, said second arms being mounted on said pivot means for upward rotation about the axis located upstream of the first arms support means for receiving the article operably related to the conveyor and above the conveyor for receiving the article when it overbalances about its rear edge, said lifting arms thereafter being lowered to control forward sliding movement of the rear edge of the article, and means operably connected with said first and second arms for effecting upward movement of said arms in synchronism.
Claim 3
Dependent Claim
39 words
The mechanism as claimed in claim 1 in which said means for effecting upward rotation of said arms includes a piston-cylinder unit, and link means interconnecting said first and second arms with the piston rod of said piston-cylinder unit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-04 | 1974-07-06 | 1975-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-04 | 1978-07-06 | 1979-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-04 | 1982-07-06 | 1983-01-05 | $7700.00 | Window Closed / Lapsed |