US3970402A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wedge-clamped flange joint
Assignee: Individual
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Filing: 1975-02-14
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Granted: 1976-07-20
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Expires: 1995-02-14
Abstract
Abstract An elongated jointing device in the shape of beam body has a substantially H-shape in cross section, the lateral bar portion connecting the pair of parallel vertical portions of the H configuration serving as a distributed fulcrum. A pair of flanged members are positioned with the contact surfaces of their flanges being mated. One of the grooves of the jointing device is fitted onto the mated flanges and pinches them. By inserting at least one wedge into the other groove of the device, the one groove is narrowed thereby pinching the mated flanges and an intimate joint is formed between the two members.
Inventors
- 👤 Mikio Yamashita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:59
CPC Classifications
F; F16; F16B; F16B2/00; F16B2/02; F16B2/14; F16B2200/00; F16B2200/50; F16B2200/509; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7062; Y10T403/7064; Y10T403/7066
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
266 words
A device for jointing flanged members comprising in combination: an H-shaped elongated beam body comprising a pair of parallel members and a transversely extending fulcrum member integrally connecting said parallel members together, a first pair of substantially parallel legs of said H-shaped member, defining a first space for housing said flanged members, extending in a first direction away from said fulcrum member and upon one side thereof, and a second pair of substantially parallel legs of said H-shaped member, defining a second space for housing wedge means, extending in a second direction away from said fulcrum member and upon the opposite side thereof relative to said first pair of legs so as to be aligned with said first pair of legs, said second pair of legs being substantially longer than said first pair of legs so as to provide a lever action with respect to said first pair of legs, about said fulcrum when said wedge means is inserted within said second space, and said first and second spaces also being parallel to and encompassing the medial plane of symmetry of said H-shaped member, and wedge means, having a length corresponding to that of said H-shaped elongated beam and adapted to be inserted into said second space, for pivoting and expanding both legs of said second pair of legs outwardly and away from each other about said fulcrum member and for simultaneously pivoting and converging both legs of said first pair of legs toward each other about said fulcrum member, whereby both legs of said first pair of legs positively grip and joint said flanged members.
Claim 2
Independent Claim
266 words
A device for jointing flanged members comprising in combination: an H-shaped elongated beam body comprising a pair of parallel members and a transversely extending fulcrum member integrally connecting said parallel members together, a first pair of substantially parallel legs of said H-shaped member, defining a first space for housing said flanged members, extending in a first direction away from said fulcrum member and upon one side thereof, and a second pair of substantially parallel legs of said H-shaped member, defining a second space for housing wedge means, extending in a second direction away from said fulcrum member and upon the opposite side thereof relative to said first pair of legs so as to be aligned with said first pair of legs, said second pair of legs being substantially longer than said first pair of legs so as to provide a lever action with respect to said first pair of legs, about said fulcrum when said wedge means is inserted within said second space, and said first and second spaces also being parallel to and encompassing the medial plane of symmetry of said H-shaped member, and wedge means, having a length corresponding to that of said H-shaped elongated beam and adapted to be inserted into said second space, for pivoting and expanding both legs of said second pair of legs outwardly and away from each other about said fulcrum member and for simultaneously pivoting and converging both legs of said first pair of legs toward each other about said fulcrum member, whereby both legs of said first pair of legs positively grip and joint said flanged members.
Claim 3
Dependent Claim
22 words
The device for jointing flanged members according to claim 1, wherein: the sides of said beam members are formed in circular shape.
Claim 4
Dependent Claim
28 words
The device for jointing flanged members according to claim 1 wherein: said device has indents for preventing said wedge means from escaping from said second pair of legs.
Claim 5
Dependent Claim
42 words
The device for jointing flanged members according to claim 1, wherein: said wedge means has shoulders projecting from both sides thereof and at the head portion thereof for limiting the depth to which the wedge means is inserted within said second space.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |