US3585824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener assembly
Assignee: Dzus Fastener Co Inc
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Filing: 1969-03-21
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Granted: 1971-06-22
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Expires: 1989-03-21
Abstract
Abstract A fastener element for joining separate members is provided with spiral cam slots for engaging a spring attached to one of the members. When the fastener element is axially rotated, the spring is urged into the cam slots to fasten the spring and element together. The fastener element is provided with locking means to prevent axial rotation. Means are also provided, either in combination with the locking means or only with the fastener element, to adjust the length of the fastener element to accommodate the distance between the members to be fastened. This mechanism dispenses, in many instances, with the need to inventory fastening elements of varying lengths.
Inventors
- 👤 Peter Schenk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:19
CPC Classifications
F; F16; F16B; F16B5/00; F16B5/10; F16B21/00; F16B21/02; F16B21/04; Y; Y10; Y10T; Y10T70/00; Y10T70/40; Y10T70/413; Y10T70/437; Y10T70/446; Y10T70/465; Y10T70/48; Y10T70/50; Y10T70/5093; Y10T70/554; Y10T70/5562; Y10T70/5575; Y10T70/558; Y10T70/5584; Y10T70/5889; Y10T70/5903; Y10T70/5982; Y10T70/5987; Y10T70/80; Y10T70/8432; Y10T70/8649
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
178 words
In a fastener assembly for detachably fastening together separate members wherein a spring is secured to the first of said members, the improvement in combination therewith which comprises: a rotatable fastener element having an exposed enlarged grasping means on one side of said second member and which includes a shank extending from said grasping means and through said second member and being provided with a spiral cam slot disposed in the shank wall distal from said second member and proximal to said spring to permit engagement of the spring in the slot so that when the grasping means and the shank are axially rotated the spring is urged into the cam slot to fasten the shank and spring together; means carried by the fastener element for engaging and holding the second of said members in the fastened position; and releaseable means rotatably carried by the fastener element for preventing reverse rotation of the shank when the spring and cam slot are in the fastened position; thereby preventing separation of said members until release of the rotation prevention means.
Claim 2
Dependent Claim
178 words
In a fastener assembly for detachably fastening together separate members wherein a spring is secured to the first of said members, the improvement in combination therewith which comprises: a rotatable fastener element having an exposed enlarged grasping means on one side of said second member and which includes a shank extending from said grasping means and through said second member and being provided with a spiral cam slot disposed in the shank wall distal from said second member and proximal to said spring to permit engagement of the spring in the slot so that when the grasping means and the shank are axially rotated the spring is urged into the cam slot to fasten the shank and spring together; means carried by the fastener element for engaging and holding the second of said members in the fastened position; and releaseable means rotatably carried by the fastener element for preventing reverse rotation of the shank when the spring and cam slot are in the fastened position; thereby preventing separation of said members until release of the rotation prevention means.
Claim 3
Dependent Claim
69 words
A fastener assembly in accordance with claim 1 wherein the releaseable means for preventing reverse rotation of the fastener element include a key-actuated lock assembly which comprises: a bolt movable under the action of the key between a retracted and advanced position; and an independently supported bracket provided with an aperture for receiving the bolt in the advanced position to prevent relative rotation between the fastener element and bracket.
Claim 4
Dependent Claim
42 words
A fastener assembly in accordance with claim 2 including means for advancing and retracting the fastener element relative to the holding means to permit adjustment of the length of the fastener assembly to accommodate the distance between the first and second members.
Claim 5
Dependent Claim
90 words
A fastener assembly in accordance with claim 3 wherein the fastener element is provided with an internally threaded section and the means for advancing and retracting the fastener element comprise: a threaded member for engaging the shank thread; means for preventing relative rotation between the fastener element and the threaded member so that when the threaded member rotatably engages the shank thread the fastener element will be prevented from rotating relative to the threaded member and will ride on the threaded member to alter the length of the fastener assembly.
Claim 6
Dependent Claim
40 words
A fastener assembly in accordance with claim 2 including a weatherproof cover positioned over the lock assembly movable between a retracted position to permit key insertion and an advanced position to protect the lock from dust, moisture and the elements.
Claim 7
Dependent Claim
171 words
In a fastener assembly for detachably fastening together separate members wherein a spring is secured to the first of said members, the improvement in combination therewith which comprises: a rotatable fastener element having an exposed enlarged grasping means on one side of said second member and which includes a shank extending from said grasping means and through said second member and being provided with a spiral cam slot disposed in the shank wall distal from said second member and proximal to said spring to permit engagement of the spring in the slot so that when the grasping means and shank are axially rotated the spring is urged into the cam slot to fasten the shank and spring together; means carried by the fastener element for engaging and holding the second of said members in the fastened position; and meaNs for advancing and retracting the fastener element relative to the holding means to permit adjustment of the length of the fastener assembly to accommodate the distance between the first and second members.
Claim 8
Dependent Claim
171 words
In a fastener assembly for detachably fastening together separate members wherein a spring is secured to the first of said members, the improvement in combination therewith which comprises: a rotatable fastener element having an exposed enlarged grasping means on one side of said second member and which includes a shank extending from said grasping means and through said second member and being provided with a spiral cam slot disposed in the shank wall distal from said second member and proximal to said spring to permit engagement of the spring in the slot so that when the grasping means and shank are axially rotated the spring is urged into the cam slot to fasten the shank and spring together; means carried by the fastener element for engaging and holding the second of said members in the fastened position; and meaNs for advancing and retracting the fastener element relative to the holding means to permit adjustment of the length of the fastener assembly to accommodate the distance between the first and second members.
Claim 9
Dependent Claim
84 words
A fastener assembly in accordance with claim 6 wherein the shank is provided with a threaded section and the advancing and retracting means comprise: a threaded member for engaging the shank thread; means for preventing relative rotation between the fastener element and the threaded member so that when the threaded member rotatably engages the shank thread the fastener element will be prevented from rotating relative to the threaded member and will ride on the threaded member to alter the length of the fastener assembly.
Claim 10
Dependent Claim
63 words
A fastener assembly in accordance with claim 7 wherein the means for advancing and retracting the fastener element are carried by the fastener element and comprise: a projection extending outwardly from the fastener element; and a sleeve surrounding the fastener element and provided with an internal recess for receiving the shank projection to thereby prevent relative rotation between the fastener element and shank.
Claim 11
Dependent Claim
44 words
A fastener assembly in accordance with claim 8 wherein the means for engaging and holding the second member in the fastened position comprise: a housing in supporting engagement with the threaded member; and shoulders laterally extending from the housing for engaging the second member.
Claim 12
Dependent Claim
20 words
A fastener assembly in accordance with claim 8 including a lock assembly carried by the fastener element and rotatable therewith.
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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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |