Patent US3669481A successfully refreshed from Google Patents.
US3669481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling or locking means
Assignee: LIBER SHOVEL CO AG
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Filing: 1969-05-23
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Granted: 1972-06-13
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Expires: 1989-05-23
Abstract
Abstract In a means for coupling or locking two parts together, one part is provided with a preferably conical stud which can be inserted against a stop in a conical recess in the other part. One or preferably two or more spring actuated latching members pivotal about shafts at right angles to the axial direction of the stud are free to enter an enlarged section of the recess so that the latching members like barbs of a hook or harpoon prevent the stud from returning. An operating device rotatable or axially displaceable within the stud and actuated from one or both ends thereof effects the return of the latching members. The means may be used for coupling together two machine parts, e.g. in a chuck or the like, as a hose coupling, in a safety lock system for vehicles etc.
Inventors
- 👤 Hermann Gustav Adolf Bergmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:33
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/12; E05B63/127; F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/096; Y; Y10; Y10T; Y10T24/00; Y10T24/45; Y10T24/45225; Y10T24/45471; Y10T24/45482; Y10T24/45487; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0848; Y10T292/0849; Y10T292/0854; Y10T292/0859; Y10T292/42; Y10T292/444; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
188 words
A fastening assembly for releasably fastening two elements together, comprising a first element having a tapered stud member, an operating member extending longitudinally through said stud member and movable therein, said stud member being provided with at least one recess communicating with said operating member and the outside of said stud member, at least one latching member cooperating with said operating member, said recess being adapted to receive substantially the entire latching member when in the released position, a second element provided with a tapered opening to receive said tapered stud member of said first element, the tapered walls of said tapered opening being provided with a conical recess for receiving said at least one latching member when it protrudes from the at least one recess in said stud member, said operating member including a surface of varying cross sectional area, means for urging said at least one latching member into a latching position by moving said at least one latching member into the conical recess in the tapered wall of the tapered opening by slidably engaging said surface of varying cross sectional area of said operating member.
Claim 2
Dependent Claim
188 words
A fastening assembly for releasably fastening two elements together, comprising a first element having a tapered stud member, an operating member extending longitudinally through said stud member and movable therein, said stud member being provided with at least one recess communicating with said operating member and the outside of said stud member, at least one latching member cooperating with said operating member, said recess being adapted to receive substantially the entire latching member when in the released position, a second element provided with a tapered opening to receive said tapered stud member of said first element, the tapered walls of said tapered opening being provided with a conical recess for receiving said at least one latching member when it protrudes from the at least one recess in said stud member, said operating member including a surface of varying cross sectional area, means for urging said at least one latching member into a latching position by moving said at least one latching member into the conical recess in the tapered wall of the tapered opening by slidably engaging said surface of varying cross sectional area of said operating member.
Claim 3
Dependent Claim
63 words
A fastening assembly as claimed in claim 1 wherein said means for urging said at least one latching member into the latching position comprises spring means whereby, when said operating member is actuated, said at least one latching member will be returned to the released position in the at least one recess in said stud member against the action of said spring means.
Claim 4
Dependent Claim
73 words
A fastening assembly as claimed in claim 1 and further comprising at least one pivot mounted in the at least one recess of said stud member, the axis of said at least one pivot being transverse to and spaced from the axis of said operating member, said at least one latching member being mounted on said at least one pivot, and spring means urging said at least one latching means about said pivot.
Claim 5
Dependent Claim
62 words
A fastening assembly as claimed in claim 3 wherein the outer surface of the conical recess in the tapered wall of the tapered opening in said second element with which said at least one latching member engages when in the latching position forms an angle to the axis of said operating member such that a normal thereto extends substantially through said pivot.
Claim 6
Dependent Claim
49 words
A fastening assembly as claimed in claim 3 wherein the surface of varying cross sectional area of said operating member forms a double conical wedge-shaped surface and the operating member may be actuated in either axial direction to move said at least one latching member to the released position.
Claim 7
Dependent Claim
46 words
A fastening assembly as claimed in claim 1 wherein the surface of carying cross sectional area of said operating member constitutes a cam surface and the operating member may be rotated about its axis to move said at least one latching member to the released position.
Claim 8
Dependent Claim
49 words
A fastening assembly as claimed in claim 1 and further comprising roller bearings between the engaging surface of the at least one latching member and the outer surface of the conical recess in the tapered wall of the tapered opening in said second element to facilitate relative movement therebetween.
Claim 9
Dependent Claim
207 words
A fastening assembly for releasably fastening two elements together, comprising a first element having a stud member, an operating member extending longitudinally through said stud member and movable therein, said stud member being provided with at least one recess communicating with said operating member and the outside of said stud member, at least one latching member cooperating with said operating member, said recess being adapted to receive substantially the entire latching member when in the released position, a second element provided with a tapered opening to receive said tapered stud member of said first element, the tapered walls of said tapered opening being provided with at least one recess for receiving said at least one latching member when it protrudes from the at least one recess in said stud member, said operating member including a surface having double-conical wedge shape, whereby the operating member may be actuated in either axial direction to move said at least one latching member to the released position, means for urging said at least one latching member into a latching position by moving said at least one latching member into the at least one recess in the tapered wall of the tapered opening by slidably engaging said surface of said operating member.
Claim 10
Dependent Claim
207 words
A fastening assembly for releasably fastening two elements together, comprising a first element having a stud member, an operating member extending longitudinally through said stud member and movable therein, said stud member being provided with at least one recess communicating with said operating member and the outside of said stud member, at least one latching member cooperating with said operating member, said recess being adapted to receive substantially the entire latching member when in the released position, a second element provided with a tapered opening to receive said tapered stud member of said first element, the tapered walls of said tapered opening being provided with at least one recess for receiving said at least one latching member when it protrudes from the at least one recess in said stud member, said operating member including a surface having double-conical wedge shape, whereby the operating member may be actuated in either axial direction to move said at least one latching member to the released position, means for urging said at least one latching member into a latching position by moving said at least one latching member into the at least one recess in the tapered wall of the tapered opening by slidably engaging said surface of said operating member.
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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) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |