Patent US4683205A successfully refreshed from Google Patents.
Patent US4070119A successfully refreshed from Google Patents.
US4070119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tube joints
Assignee: Individual
•
Filing: 1976-08-16
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Granted: 1978-01-24
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Expires: 1996-08-16
Abstract
Abstract Tubes are joined using a stud which supports locking elements inside the tube; a cleaner joint and a stronger one are achieved by a unique form of stud.
Inventors
- 👤 Gregory F. Duer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:18
CPC Classifications
F; F16; F16B; F16B7/00; F16B7/04; F16B7/0406; F16B7/0413; Y; Y10; Y10T; Y10T403/00; Y10T403/16; Y10T403/1608; Y10T403/55
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
Fastener means for joining two tubes in end-to-end butted relationship comprising a stud having an intermediate body portion and respective tapered end surfaces which enable the concave sides of a set of toothed locking elements of concave-convex cross section to be respectively nested against each end surface, said locking elements being so nested, and the body portion of said stud having a keying surface centered mid-way of the length to enable a complemental key surface of a jig to be separably keyed to the mid-section of the stud for supporting the inside diameter of respective tubes having their ends pressed against the opposed sides of said jig, and including an additional set of locking elements, means affording shanks outward of said tapered ends, and spacer sleeves adapted to be mounted on said shanks to space the sets of locking elements.
Claim 2
Dependent Claim
140 words
Fastener means for joining two tubes in end-to-end butted relationship comprising a stud having an intermediate body portion and respective tapered end surfaces which enable the concave sides of a set of toothed locking elements of concave-convex cross section to be respectively nested against each end surface, said locking elements being so nested, and the body portion of said stud having a keying surface centered mid-way of the length to enable a complemental key surface of a jig to be separably keyed to the mid-section of the stud for supporting the inside diameter of respective tubes having their ends pressed against the opposed sides of said jig, and including an additional set of locking elements, means affording shanks outward of said tapered ends, and spacer sleeves adapted to be mounted on said shanks to space the sets of locking elements.
Claim 3
Dependent Claim
20 words
Fastener means according to claim 1 wherein said body portion is cylindrical, and said keying surface being a circumferential groove.
Claim 4
Dependent Claim
104 words
Tooling for joining two tubes in end-to-end butted relationship comprising a stud having a jig keying surface positioned mid-way of its length thereby defining supporting surfaces of equal length on opposite sides of said keying surface, shanks of reduced diameter extended outwardly at respective ends of the stud supporting toothed locking washers respectively engaged with the ends of the stud, and a jig having a bifurcation in which the keying surface is disposed for supporting the stud by the jig, and said bifurcation serving as an abutment for the adjacent ends of a pair of tubes fitted over said washers and said supporting surfaces.
Claim 5
Dependent Claim
104 words
Tooling for joining two tubes in end-to-end butted relationship comprising a stud having a jig keying surface positioned mid-way of its length thereby defining supporting surfaces of equal length on opposite sides of said keying surface, shanks of reduced diameter extended outwardly at respective ends of the stud supporting toothed locking washers respectively engaged with the ends of the stud, and a jig having a bifurcation in which the keying surface is disposed for supporting the stud by the jig, and said bifurcation serving as an abutment for the adjacent ends of a pair of tubes fitted over said washers and said supporting surfaces.
Claim 6
Dependent Claim
120 words
Tooling according to claim 3 in which said stud is in the form of a cylindrical body formed with frusto-conical ends tapered uniformly to enable the concave side of a toothed locking washer of concave-convex cross section to nest against each end, said keying surface being a circumferential groove, said jig having a pair of bifurcated arms which are spaced apart by a distance substantially equal to the diameter of said groove, for supporting the stud, each of said arms having a height greater than the depth of the groove so that when the arms are in supporting position the excess height serves as an abutment for the adjacent ends of a pair of tubes fitted over said supporting surfaces.
References Cited (Backward Citations)
US1980530A
Cited
US1952109A
Cited
GB733078A
Cited
US3503639A
Cited
GB1204030A
Cited
US3864051A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |