US3704014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick adjusting c-clamp
Assignee: Individual
•
Filing: 1971-02-08
•
Granted: 1972-11-28
•
Expires: 1991-02-08
Abstract
Abstract A C-clamp comprising a C-shaped frame embodying a pair of arms having similar ends joined by a bight portion. One of the arms, similar to an ordinary C-clamp, has a terminal anvil constituting a stationary clamping jaw. The other arm has first and second slots to accommodate an elongated screw. This screw has the usual swivelly mounted head on one end adapted to be lined up with and moved toward and from the stationary jaw and it in effect is a movable jaw. A screw mounting and end thrust nut is threaded on the median portion of the screw and is shiftably, adjustably and operatively mounted in one of the slots by way of a nut receiving and keying pocket. A notched wall of the pocket receives and permits the screw to be positioned for adjustment or release for quick manual adjustment of the nut on the screw.
Inventors
- 👤 Robert F Keene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:56
CPC Classifications
B; B25; B25B; B25B5/00; B25B5/06; B25B5/10; B25B5/101
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
261 words
A C-clamp comprising a rigid C-shaped frame embodying a pair of spaced opposed arms having like ends cooperatively joined by a complemental bight portion, one of said arms having a terminal anvil constituting a stationary workpiece abutting and clamping jaw, said other arm having slot means, an elongated screw having a median portion cooperable with said slot means, said screw having a swivelly mounted head on one end which is designed and adapted to be moved toward said stationary jaw and which constitutes a movable jaw and having handle means at its other end, and a screw mounting and end thrust nut threaded on and carried by said screw and shiftably, adjustably and operatively mounted in said slot means in a manner permitting the screw and the nut thereon to be retentively keyed in a captive position for clamping use or, alternatively, bodily shifted to a free noncaptive position so that quick adjustment of the nut on the screw can be accomplished and the nut can then be readily restored to its captive workpiece clamping position, wherein said slot means embodying a first inwardly disposed slot and a second outwardly disposed slot aligned with and parallel to said first slot, the width of said first slot being slightly greater than the transverse cross-sectional dimension of said screw and permitting the screw to be snugly fitted but manually slid from one to the other end of said first slot, said second slot being of a width which permits the screw and the nut thereon to be freely slid back and forth therein.
Claim 2
Dependent Claim
261 words
A C-clamp comprising a rigid C-shaped frame embodying a pair of spaced opposed arms having like ends cooperatively joined by a complemental bight portion, one of said arms having a terminal anvil constituting a stationary workpiece abutting and clamping jaw, said other arm having slot means, an elongated screw having a median portion cooperable with said slot means, said screw having a swivelly mounted head on one end which is designed and adapted to be moved toward said stationary jaw and which constitutes a movable jaw and having handle means at its other end, and a screw mounting and end thrust nut threaded on and carried by said screw and shiftably, adjustably and operatively mounted in said slot means in a manner permitting the screw and the nut thereon to be retentively keyed in a captive position for clamping use or, alternatively, bodily shifted to a free noncaptive position so that quick adjustment of the nut on the screw can be accomplished and the nut can then be readily restored to its captive workpiece clamping position, wherein said slot means embodying a first inwardly disposed slot and a second outwardly disposed slot aligned with and parallel to said first slot, the width of said first slot being slightly greater than the transverse cross-sectional dimension of said screw and permitting the screw to be snugly fitted but manually slid from one to the other end of said first slot, said second slot being of a width which permits the screw and the nut thereon to be freely slid back and forth therein.
Claim 3
Dependent Claim
96 words
The C-clamp defined in and according to claim 1, and wherein one end of the second slot is oriented and aligned with said clamping jaw and is provided with a nut receiving and keying pocket in which said nut is capable of being (1) selectively nested and firmly lodged to permit the screw to be turned relative to said nut and thus adjusted and (2) bodilY freed in a manner to permit the nut to be quickly screwed by hand to a desired place on said screw and then replaced for retention in said keying pocket.
Claim 4
Dependent Claim
111 words
The C-clamp defined in and according to claim 1, and wherein one end of the second slot is oriented and aligned with said clamping jaw and is provided with a nut receiving and keying pocket in which said nut is capable of being (1) selectively nested and firmly lodged to permit the screw to be turned relative to said nut and thus adjusted and (2) bodily freed in a manner to permit the nut to be quickly screwed by hand to a desired place on said screw and then replaced for retention in said keying pocket, said pocket corresponding in sahpe and size to the shape and size of said nut.
Claim 5
Dependent Claim
43 words
The C-clamp defined in and according to claim 3, and wherein said pocket embodies a bottom wall having an open-ended notch in which a portion of said screw can be removably seated when the nut is lodged in said pocket for screw-adjusting purposes.
Claim 6
Dependent Claim
233 words
A C-clamp comprising a rigid C-shaped frame embodying a pair of spaced opposed arms having ends joined by a complemental bight portion, one of said arms terminating in an anvil like head constituting a stationary workpiece abutting and clamping jaw, the other arm having first and second slots formed therein, the first slot being narrower and shorter than the second slot, the second slot being of the width to accommodate the size of the nut which is cooperable therewith, said second slot being provided at one end with a nut receiving, accommodating and keying pocket, an elongated screw having a median portion cooperable with said slots and passing operably through the slots and having a swivelly mounted head on one end which is designed and adapted to be moved toward and from the stationary jaw and which constitutes a movable jaw, and a screw mounting end thrust nut carried by the median threaded portion of said screw, said nut being normally lodged and keyed for operation in a pocket at the end of the second slot, said pocket being substantially square in configuration and said nut being correspondingly square and nested retentively in said pocket when the nut is being used, said pocket being provided with a wall and said wall having a notch therein aligned with said pocket and adapted to accommodatingly receive that portion of the screw which is cooperable therewith.
Claim 7
Dependent Claim
233 words
A C-clamp comprising a rigid C-shaped frame embodying a pair of spaced opposed arms having ends joined by a complemental bight portion, one of said arms terminating in an anvil like head constituting a stationary workpiece abutting and clamping jaw, the other arm having first and second slots formed therein, the first slot being narrower and shorter than the second slot, the second slot being of the width to accommodate the size of the nut which is cooperable therewith, said second slot being provided at one end with a nut receiving, accommodating and keying pocket, an elongated screw having a median portion cooperable with said slots and passing operably through the slots and having a swivelly mounted head on one end which is designed and adapted to be moved toward and from the stationary jaw and which constitutes a movable jaw, and a screw mounting end thrust nut carried by the median threaded portion of said screw, said nut being normally lodged and keyed for operation in a pocket at the end of the second slot, said pocket being substantially square in configuration and said nut being correspondingly square and nested retentively in said pocket when the nut is being used, said pocket being provided with a wall and said wall having a notch therein aligned with said pocket and adapted to accommodatingly receive that portion of the screw which is cooperable therewith.
References Cited (Backward Citations)
US2156195A
Cited
US3147003A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-11-28 | 1976-05-29 | 1976-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-28 | 1980-05-29 | 1980-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-28 | 1984-05-29 | 1984-11-28 | $7700.00 | Window Closed / Lapsed |