US3752361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Panel supporting and lifting device
Assignee: Winkel Machine Co Inc
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Filing: 1972-06-23
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Granted: 1973-08-14
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Expires: 1992-06-23
Abstract
Abstract A panel feeding machine for removing the bottom panel from an upstanding stack of panels. A supporting and lifting device is provided for laterally supporting the stack and for lifting at least a portion thereof. The supporting device includes a pair of upstanding and spaced guide walls separated by the stack. The supporting device is secured to a frame which is adapted to permit a lateral movement of the guide walls with respect to the frame so that stacks of different widths may be accommodated. The lifting device is mounted on each of the guide walls and is movable therewith. The lifting device includes a jaw assembly mounted for lateral movement with respect to the guide walls for gripping the stack therebetween and lifting the upper portion of the stack to remove the weight of the upper portion of the stack from the lower panels thereof. A control is provided for controlling the gripping force of the jaw assembly in response to the weight of the upper portion of the stack.
Inventors
- 👤 R Vanlinder
- 👤 B Vanlinder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:42
CPC Classifications
B; B65; B65G; B65G59/00; B65G59/06; B65G59/061; B65G59/062
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
123 words
In a supporting and lifting device for lifting an upstanding stack of panels off the lowermost panels in the stack, said supporting and lifting device having a pair of upstanding and spaced guide walls separated by said stack and frame means for supporting said guide walls and lift means mounted upon each of said guide walls and including jaw assembly means mounted for lateral movement with respect to said guide walls for gripping said stack therebetween and lifting the upper portion of said stack to remove the weight thereof from the lower panel of said stack, the improvement comprising: control means for controlling the gripping force of said jaw assembly means in response to said weight of said upper portion of said stack.
Claim 2
Dependent Claim
123 words
In a supporting and lifting device for lifting an upstanding stack of panels off the lowermost panels in the stack, said supporting and lifting device having a pair of upstanding and spaced guide walls separated by said stack and frame means for supporting said guide walls and lift means mounted upon each of said guide walls and including jaw assembly means mounted for lateral movement with respect to said guide walls for gripping said stack therebetween and lifting the upper portion of said stack to remove the weight thereof from the lower panel of said stack, the improvement comprising: control means for controlling the gripping force of said jaw assembly means in response to said weight of said upper portion of said stack.
Claim 3
Dependent Claim
103 words
The supporting and lifting device according to claim 1 wherein said control means comprises means defining a cam surface on each of said jaw assembly means, said cam surface means being on a side of said jaw assembly means opposite to said stack and being downwardly facing and inclined upwardly laterally away from said stack; and wherein said lift means comprises an upwardly acting actuating member engaging said cam surface means to both lift said jaw assembly means and urge said jaw assembly means into engagement with said stack at a force proportional to said weight of said upper portion of said stack.
Claim 4
Dependent Claim
50 words
The supporting and lifting device according to claim 2, wherein each of said jaw assembly means comprises a vertically and laterally movable plate having a jaw secured thereto on one side thereof and movable therewith; and wherein said cam surface means is secured to the opposite side of said plate.
Claim 5
Dependent Claim
42 words
The supporting and lifting device according to claim 3, wherein said cam surface means and said jaw are generally horizontally aligned; and wherein said actuating member engages said cam surface means at a location which is generally horizontally aligned with said jaw.
Claim 6
Dependent Claim
27 words
The supporting and lifting device according to claim 4, wherein said jaw assembly means includes resilient means for biasing said plate to the lowermost, at rest position.
Claim 7
Dependent Claim
16 words
The supporting and lifting device according to claim 2, wherein said actuating member is a roller.
Claim 8
Dependent Claim
80 words
The supporting and lifting device according to claim 2, wherein said control means includes means defining a second cam surface on the side of said jaw assembly means opposite to said stack and being upwardly facing and inclined upwardly laterally away from said stack; and wherein said lift means comprises a downwardly acting actuating member engaging said second cam surface means to both lower said jaw assembly means and urge said jaw assembly means out of engagement with said stack.
Claim 9
Dependent Claim
129 words
In a panel feeding machine for removing the bottom panel from an upstanding stack of panels and including means for laterally supporting said stack and for lifting at least a part thereof, said means comprising: a frame; a pair of laterally spaced substantially upstanding guide walls for laterally supporting said Stack therebetween; jaw means mounted for lateral movement on each of said walls and for movement upwardly and downwardly therealong; means carried by each of said walls for effecting said lateral movement of said jaw means with respect to said wall simultaneously when said jaw means is moved vertically with respect to said wall and at a force which is proportional to the weight of said part of said stack; and energizing means for vertically moving said jaw means.
Claim 10
Dependent Claim
129 words
In a panel feeding machine for removing the bottom panel from an upstanding stack of panels and including means for laterally supporting said stack and for lifting at least a part thereof, said means comprising: a frame; a pair of laterally spaced substantially upstanding guide walls for laterally supporting said Stack therebetween; jaw means mounted for lateral movement on each of said walls and for movement upwardly and downwardly therealong; means carried by each of said walls for effecting said lateral movement of said jaw means with respect to said wall simultaneously when said jaw means is moved vertically with respect to said wall and at a force which is proportional to the weight of said part of said stack; and energizing means for vertically moving said jaw means.
References Cited (Backward Citations)
US3075671A
Cited
US3206066A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-13 | 1977-02-12 | 1977-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-13 | 1981-02-12 | 1981-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-13 | 1985-02-12 | 1985-08-14 | $7700.00 | Window Closed / Lapsed |