US3604745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toggle arm clamp for lift trucks
Assignee: Security Pacific Business Credit Inc
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Filing: 1969-06-23
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Granted: 1971-09-14
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Expires: 1989-06-23
Abstract
Abstract A lift truck clamp for paper rolls, or similar objects, having one swinging arm to increase the range of diameters which can be handled. A toggle linkage is used to control the movement of the swinging arm. The pivot point is so placed as to allow a much shorter swinging arm.
Inventors
- 👤 Stuart W Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:15
CPC Classifications
B; B66; B66F; B66F9/00; B66F9/06; B66F9/075; B66F9/12; B66F9/18; B66F9/184
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
111 words
In a clamping attachment for lift trucks and the like: a frame, a first load-engaging arm extending from the frame, a second load-engaging arm extending in the same general direction as the first arm, bracket means, guide means slideably mounting the bracket means on the frame for movement toward and away from the first arm, the second arm pivotally attached at its inner end to the bracket means, a toggle linkage pivotally attached to the second arm adjacent the inner end and to the frame, and actuating means for sliding the bracket means in the guide means, thereby causing the load-engaging arms to move toward each other in a predetermined path.
Claim 2
Dependent Claim
111 words
In a clamping attachment for lift trucks and the like: a frame, a first load-engaging arm extending from the frame, a second load-engaging arm extending in the same general direction as the first arm, bracket means, guide means slideably mounting the bracket means on the frame for movement toward and away from the first arm, the second arm pivotally attached at its inner end to the bracket means, a toggle linkage pivotally attached to the second arm adjacent the inner end and to the frame, and actuating means for sliding the bracket means in the guide means, thereby causing the load-engaging arms to move toward each other in a predetermined path.
Claim 3
Dependent Claim
34 words
The invention of claim 1 including: mounting means holding the first arm, guide means slideably mounting the mounting means, and actuating means for sliding the mounting means and first arm toward the second arm.
Claim 4
Dependent Claim
129 words
A lift truck clamp including: a frame, vertically extending guides in the frame, slides slideably mounted in the guides, a bracket attached to the slides, a first load-engaging arm extending from the front of the frame, a second load-engaging arm pivotally mounted at its inner end on the bracket adjacent the front of the frame, a toggle linkage pivotally interconnecting the frame and upper portion of the inner end of the second arm, the toggle linkage maintaining the second arm substantially perpendicular to the front of the frame during a first portion of the sliding movement of the bracket, and causing the second arm to pivot about the bracket during the remaining portion of the sliding movement of the bracket, and means for moving the slides within the guides.
Claim 5
Dependent Claim
129 words
A lift truck clamp including: a frame, vertically extending guides in the frame, slides slideably mounted in the guides, a bracket attached to the slides, a first load-engaging arm extending from the front of the frame, a second load-engaging arm pivotally mounted at its inner end on the bracket adjacent the front of the frame, a toggle linkage pivotally interconnecting the frame and upper portion of the inner end of the second arm, the toggle linkage maintaining the second arm substantially perpendicular to the front of the frame during a first portion of the sliding movement of the bracket, and causing the second arm to pivot about the bracket during the remaining portion of the sliding movement of the bracket, and means for moving the slides within the guides.
Claim 6
Dependent Claim
66 words
The invention of claim 3 wherein the toggle linkage includes: a crank pivotally attached to the bracket, a rocking lever pivotally interconnecting the frame and crank, and a link pivotally interconnecting the crank and second arm, the pivotal interconnection between the rocking lever and crank being substantially coincident with the pivotal mounting of the second arm and bracket during the first portion of the sliding movement.
Claim 7
Dependent Claim
22 words
The invention of claim 3 including the first arm being slideably mounted on the frame and means for sliding the first arm.
References Cited (Backward Citations)
US3449009A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |