Patent US4997154A successfully refreshed from Google Patents.
US4997154A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick release clamp assembly
Assignee: KI Mobility LLC
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Filing: 1989-05-11
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Granted: 1991-03-05
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Expires: 2009-05-11
Abstract
Abstract A quick release clamp assembly for retaining a hook type support bracket on a shaft. The clamp assembly can be used, for example, to secure a seat and backrest to the frame of a foldable wheelchair. The clamp assembly includes a clamp adapted to be attached to a frame member of the chair and a cam rotatably mounted to the clamp for operation between an open and a closed position for retaining the bracket on the frame member. In the preferred embodiment the cam also includes an over the center protrusion which tends to prevent the inadvertent opening of the cam and release of the bracket.
Inventors
- 👤 Roy M. Little
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:38
CPC Classifications
A; A61; A61G; A61G5/00; A61G5/10; A61G5/08; A61G5/0875; A61G5/0891; A61G5/1091; F; F16; F16B; F16B2/00; F16B2/02; F16B2/18; Y; Y10; Y10S; Y10S297/00; Y10S297/04
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
64 words
A quick release clamp assembly for use with a hook type support bracket or the like comprising: mounting means adapted to be attached to a shaft; and, a cam rotatably mounted to the mounting means for operation between open and closed positions, the cam including a lobe which cooperates with the shaft to captivate the bracket when the cam is in the closed position.
Claim 2
Dependent Claim
64 words
A quick release clamp assembly for use with a hook type support bracket or the like comprising: mounting means adapted to be attached to a shaft; and, a cam rotatably mounted to the mounting means for operation between open and closed positions, the cam including a lobe which cooperates with the shaft to captivate the bracket when the cam is in the closed position.
Claim 3
Dependent Claim
13 words
The clamp assembly of claim 1 wherein the mounting means is a clamp.
Claim 4
Dependent Claim
18 words
The clamp assembly of claim 2 wherein the clamp includes two opposing sections adjustably joined by a fastener.
Claim 5
Dependent Claim
25 words
The clamp assembly of claim 1 further including safety means for restricting the movement of the cam from the closed position toward the open position.
Claim 6
Dependent Claim
33 words
The clamp assembly of claim 4 wherein the safety means includes a protrusion associated with the assembly which is frictionally engaged as the cam is rotated from the closed toward the open position.
Claim 7
Dependent Claim
32 words
The clamp assembly of claim 5 wherein the cam includes an over the center protrusion which frictionally engages the shaft as the cam is rotated from the closed toward the open position.
Claim 8
Dependent Claim
28 words
The clamp assembly of claim 1 wherein the cam further includes an end plate which cooperates with the mounting means to restrict the axial movement of the bracket.
Claim 9
Dependent Claim
33 words
The clamp assembly of claim 7 wherein the end plate includes an over the center protrusion which frictionally engages the shaft as the cam is rotated from the closed toward the open position.
Claim 10
Dependent Claim
59 words
A quick release support bracket assembly comprising: a hook type support bracket; mounting means adapted to be attached to a shaft; and, a cam rotatably mounted to the mounting means for operation between open and closed positions, the cam including a lobe which cooperates with the shaft to captivate the bracket when the cam is in the closed position.
Claim 11
Dependent Claim
59 words
A quick release support bracket assembly comprising: a hook type support bracket; mounting means adapted to be attached to a shaft; and, a cam rotatably mounted to the mounting means for operation between open and closed positions, the cam including a lobe which cooperates with the shaft to captivate the bracket when the cam is in the closed position.
Claim 12
Dependent Claim
14 words
The support bracket assembly of claim 9 wherein the mounting means is a clamp.
Claim 13
Dependent Claim
19 words
The support bracket assembly of claim 10 wherein the clamp includes two opposing halves adjustably joined by a fastener.
Claim 14
Dependent Claim
26 words
The support bracket assembly of claim 9 further including safety means for restricting the movement of the cam from the closed position to the open position.
Claim 15
Dependent Claim
34 words
The support bracket assembly of claim 12 wherein the safety means includes a protrusion associated with the assembly which is frictionally engaged as the cam is rotated from the closed toward the open position.
Claim 16
Dependent Claim
32 words
The clamp assembly of claim 9 wherein the lobe includes an over the center protrusion which frictionally engages the shaft as the cam is rotated from the closed toward the open position.
Claim 17
Dependent Claim
29 words
The support bracket assembly of claim 9 wherein the cam further includes an end plate which cooperates with the mounting means to restrict the axial movement of the bracket.
Claim 18
Dependent Claim
34 words
The support bracket assembly of claim 15 wherein the end plate includes an over the center protrusion which frictionally engages the shaft as the cam is rotated from the closed toward the open position.
Claim 19
Dependent Claim
70 words
A quick release clamp assembly for use with a hook type bracket or the like comprising: a clamp adapted to be joined to a shaft; and a cam rotatably mounted to the clamp for operation between open and closed positions, the cam including a lobe and an end plate which cooperate with the shaft and the clamp, respectively, to captivate the bracket when the cam is in the closed position.
Claim 20
Dependent Claim
70 words
A quick release clamp assembly for use with a hook type bracket or the like comprising: a clamp adapted to be joined to a shaft; and a cam rotatably mounted to the clamp for operation between open and closed positions, the cam including a lobe and an end plate which cooperate with the shaft and the clamp, respectively, to captivate the bracket when the cam is in the closed position.
Claim 21
Dependent Claim
109 words
A quick release clamp assembly for use with a hook type bracket or the like comprising: a clamp adapted to be secured to a cylindrical shaft, the clamp having two opposing sections adjustably joined by a fastener; and a cam rotatably mounted to the clamp for operation between open and closed positions, the cam including a lobe and an end plate which cooperate with the shaft and the clamp, respectively, to captivate the bracket when the cam is in the closed position, and the lobe further including an over the center protrusion which frictionally engages the shaft as the cam is rotated from the closed toward the open position.
Claim 22
Dependent Claim
109 words
A quick release clamp assembly for use with a hook type bracket or the like comprising: a clamp adapted to be secured to a cylindrical shaft, the clamp having two opposing sections adjustably joined by a fastener; and a cam rotatably mounted to the clamp for operation between open and closed positions, the cam including a lobe and an end plate which cooperate with the shaft and the clamp, respectively, to captivate the bracket when the cam is in the closed position, and the lobe further including an over the center protrusion which frictionally engages the shaft as the cam is rotated from the closed toward the open position.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-04 | 1994-09-03 | 1995-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-04 | 1998-09-03 | 1999-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-04 | 2002-09-03 | 2003-03-05 | $7700.00 | Window Closed / Lapsed |