Patent US1593477A successfully refreshed from Google Patents.
Patent US4042307A successfully refreshed from Google Patents.
US4042307A
Expired / Lapsed
US
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Joining
Assignee: Bose Corp
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Filing: 1976-09-02
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Granted: 1977-08-16
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Expires: 1996-09-02
Abstract
Abstract A joint is formed by pushing a grooved tenon into a dovetail-shaped mortise containing a barbed wedge such that the wedge is forced into the tenon groove, thereby spreading the tenon to the dovetail shape of the mortise and anchoring the barbs into the tenon, thus securing the joint and preventing the tenon and mortise from separating.
Inventors
- 👤 Arthur B. Jarvis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:52
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/04; E; E04; E04F; E04F2201/00; E04F2201/04; E04F2201/041; F16B2200/00; F16B2200/30; F16B2200/40; Y; Y10; Y10T; Y10T403/00; Y10T403/49; Y10T403/4924; Y10T403/53; Y10T403/535
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
94 words
A joint comprising, a first piece of material having a projection with a groove, a second piece of material having a slot embraced by angled walls with the width of the slot opening slightly greater than the width of said projection and less than the slot width at its base, and wedge means located within said slot and said groove, for expanding said groove and urging said projection into engagement with the walls beside said slot, said wedge means being formed with a slit having an opening adjacent to the base of said slot.
Claim 2
Dependent Claim
94 words
A joint comprising, a first piece of material having a projection with a groove, a second piece of material having a slot embraced by angled walls with the width of the slot opening slightly greater than the width of said projection and less than the slot width at its base, and wedge means located within said slot and said groove, for expanding said groove and urging said projection into engagement with the walls beside said slot, said wedge means being formed with a slit having an opening adjacent to the base of said slot.
Claim 3
Dependent Claim
29 words
A joint in accordance with claim 1 wherein said wedge means is formed with barbs on each side for engagement with inside walls of said projection beside said groove.
Claim 4
Dependent Claim
27 words
A joint in accordance with claim 1 wherein the wedge means slit is of triangular cross section with the triangular base at the base of said slot.
Claim 5
Dependent Claim
19 words
A joint in accordance with claim 3 wherein the triangle height is substantially 70% of the wedge means height.
References Cited (Backward Citations)
CH22861A
Cited
US2021490A
Cited
US2053382A
Cited
US2011529A
Cited
FR1045292A
Cited
US2947040A
Cited
US3341261A
Cited
US3405592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |