US3736629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamping device
Assignee: Individual
•
Filing: 1971-03-16
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Granted: 1973-06-05
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Expires: 1991-03-16
Abstract
Abstract A clamping device includes two, preferably curved, arms which are pivotally connected together at an apex and which may be shifted inwardly and outwardly by means of a force applying threaded sleeve and screw member which are pivotally connected to the respective arm portions. The sleeve member is mounted on a block which is pivoted to one of the arms and a threaded spindle or screw member is passed through a block which is pivoted to the other arm and engages within the sleeve member. The outer ends of each arm includes clamping jaws which are shifted with the arms inwardly or outwardly in order to provide a clamping action by rotation of the screw relative to the sleeve member. At least one of the arms may pivot not only about the pivotal connection at the apex of the two arms but also about the pivot of either of the threaded sleeve or the threaded spindle block supports which are arranged intermediate in length of the respective arm. A final tightening clamping action may be obtained by means of an eccentric portion of the pivot for the apex of the two arms which has the effect of shifting one end of one arm at the location at the apex in a direction outwardly so that it pivots about its intermediate connection to the force applying sleeve or spindle member.
Inventors
- 👤 J Blake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:08
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/10; B25B5/103; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44291; Y10T24/44496; Y10T24/44504
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
196 words
A clamp comprising first and second rigid arms being pivoted together at their one ends and curving outwardly toward their opposite ends, said opposite ends terminating in clamping jaws which are movable with said ends toward and away from each other by rotation of said arms about their pivotal connection together, said arms together being of generally clamshaped configuration, and force applying means for opening and closing said arms pivotally connected to said arms intermediate their lengths and comprising a rotatable threaded spindle pivotally carried on one of said arms and being rotatable on said one of said arms and socket means carried on the other of said arms rotatably receiving said spindle at a location between said arms, said spindle having a head which may be engaged and rotated to open and close said arms, said head projecting beyond the exterior of one of said arms, said spindle being received in the fully closed position of said clamp within said socket means and without projecting beyond the exterior outer side of the other of said arms so that it is unobstructed on its outer side in both the opened and closed position of said clamp.
Claim 2
Dependent Claim
196 words
A clamp comprising first and second rigid arms being pivoted together at their one ends and curving outwardly toward their opposite ends, said opposite ends terminating in clamping jaws which are movable with said ends toward and away from each other by rotation of said arms about their pivotal connection together, said arms together being of generally clamshaped configuration, and force applying means for opening and closing said arms pivotally connected to said arms intermediate their lengths and comprising a rotatable threaded spindle pivotally carried on one of said arms and being rotatable on said one of said arms and socket means carried on the other of said arms rotatably receiving said spindle at a location between said arms, said spindle having a head which may be engaged and rotated to open and close said arms, said head projecting beyond the exterior of one of said arms, said spindle being received in the fully closed position of said clamp within said socket means and without projecting beyond the exterior outer side of the other of said arms so that it is unobstructed on its outer side in both the opened and closed position of said clamp.
Claim 3
Dependent Claim
55 words
A clamp according to claim 1 including a block pivoted to one of said arms rotatablY supporting said spindle, said socket means comprising a cylinder pivotally connected to the other of said arms and extending only inwardly from the pivotal connection to said one of said arms, said spindle being threadably received in said cylinder.
Claim 4
Dependent Claim
76 words
A clamp according to claim 1 including a clamping jaw pivoted to the outer end of each of said arms, each having a plate portion which are adapted to engage with the respective opposite clamping jaw plate portion, and holding means on said arms for holding said plate portions of said clamping jaws so that they are oriented toward the respective opposite arms and are held against falling out of aligned opposed position for clamping together.
Claim 5
Dependent Claim
40 words
A clamp according to claim 3 wherein said holding means comprises a projecting portion of each of said arms which bears against said plate portion of said clamp to restrain said clamping jaws from moving outwardly from said clamping arms.
Claim 6
Dependent Claim
63 words
A clamp according to claim 1 including a pivot pin pivotally supporting said arms at the pivotal connection therebetween having means associated therewith for forcing one of said arms to pivot about its pivotal connection including a pivot joint having an eccentric portion engageable with one of said arms for shifting said one of said arms relative to the other of said arms.
Claim 7
Dependent Claim
198 words
A clamping device comprising first and second arms arranged together at an apex, a pivot pin assembly pivotally supporting said arms at said apex, a force applying member pivotally mounted to each of said arms and including a threaded member engageable with a threaded receiving member which are relatively rotatable for opening and closing said arms, said force applying member being entirely inside of the outer extremity of one of said arms in the opened and closed position of said arms and the opposite end of said member having only a socket head portion protruding beyond the outer surface of the other of said arms, the outer ends of said arms being a clamping end for clamping an object, said pivot pin assembly including a concentric bearing portion journalled in one of said arms and having a socket for engagement with a tool for rotation and an eccentric portion engageable with the other said arms and being rotatable to displace the other of said arms for pivotal movement about its pivotal connection to said force applying means for shifting the clamping end thereof in a direction toward or away from the opposite clamping end of the other arm.
Claim 8
Dependent Claim
198 words
A clamping device comprising first and second arms arranged together at an apex, a pivot pin assembly pivotally supporting said arms at said apex, a force applying member pivotally mounted to each of said arms and including a threaded member engageable with a threaded receiving member which are relatively rotatable for opening and closing said arms, said force applying member being entirely inside of the outer extremity of one of said arms in the opened and closed position of said arms and the opposite end of said member having only a socket head portion protruding beyond the outer surface of the other of said arms, the outer ends of said arms being a clamping end for clamping an object, said pivot pin assembly including a concentric bearing portion journalled in one of said arms and having a socket for engagement with a tool for rotation and an eccentric portion engageable with the other said arms and being rotatable to displace the other of said arms for pivotal movement about its pivotal connection to said force applying means for shifting the clamping end thereof in a direction toward or away from the opposite clamping end of the other arm.
Claim 9
Dependent Claim
66 words
A clamping device, according to claim 6, wherein said force applying member includes a sleeve element having a block portion pivotally supported on one of said arms and a threaded spindle member having a block portion pivotally supported on the other said arms, and stop means associated with said spindle for preventing withdrawal of said spindle from said cylinder and limiting the opening of said arms.
Claim 10
Dependent Claim
14 words
A clamping device, according to claim 7, wherein said stop means comprises a washer.
Claim 11
Dependent Claim
58 words
A device, according to claim 6, wherein said pivot assembly includes a pivot pin said arms each including two spaced parallel plate members which are curved outwardly from said pivot pin, and means biasing at least one of said arms relative to the other of said arms and said pivot for inhibiting the pivotal movement of said arms.
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) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |