US4025215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corner dovetail joint
Assignee: BROYHILL IND
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Filing: 1976-01-26
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Granted: 1977-05-24
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Expires: 1996-01-26
Abstract
Abstract In a corner joint construction of the dovetail type, the tenons and mortises on each wall at the end portion extend only partially through the thickness of the walls commencing at the inner portion thereof. The remaining or outer portion of the wall thickness is mitered from the termination of the tenons and mortises outwardly to form abutting, solid end portions which conceal the tenons and mortises therebehind.
Inventors
- 👤 Marshall B. Murdock
- 👤 Howard E. Bollinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:20
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/04; F16B2200/00; F16B2200/30; F16B2200/67
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
318 words
A corner joint construction comprising: (a) a pair of walls having inner and outer surfaces and being arranged perpendicular to each other and intersecting at adjacent end portions thereof; (b) each of said adjacent end portions include a dovetail locking means interfitting with each other when assembled, formed in the inner surface of said walls and extending only partially through the wall thickness thereof, said locking means further including (i) a transverse base surface extending partially through the thickness of a first one of said wall members adjacent to, but slightly spaced from the end thereof, a plurality of alternating, tapered tenons and mortises extending longitudinally from said base surface toward the end of said wall member, the larger cross-section of said tenons being nearest the outer end thereof whereby said tenons are generally frustro-conical in shape, the transverse cross-section of both said mortises and said tenons being curved in substantially a sinuous pattern, and the base of said tenons being spaced from the inner surface of said side wall to form an undercut; (ii) a longitudinal base surface portion intermediate the inner and outer wall surfaces of said second wall member; a plurality of alternating, tapered tenons and mortises extending from said base surface in a direction transverse to the longitudinal dimension of said second side wall member, the side walls of said tenons being separated the greatest at the inner surface of said second wall member and converging inwardly toward said base surface whereby said tenons are generally frustro-conical, the cross-section of said tenons and mortises being curved in substantially a sinuous pattern; (c) a concealing means comprising a bevel in both of said wall members extending from the outer corner of each wall inwardly to the termination of said dovetail locking means; (d) whereby said dovetail locking means is completely concealed from view when the outer or inner corner of the joint construction is observed.
Claim 2
Dependent Claim
318 words
A corner joint construction comprising: (a) a pair of walls having inner and outer surfaces and being arranged perpendicular to each other and intersecting at adjacent end portions thereof; (b) each of said adjacent end portions include a dovetail locking means interfitting with each other when assembled, formed in the inner surface of said walls and extending only partially through the wall thickness thereof, said locking means further including (i) a transverse base surface extending partially through the thickness of a first one of said wall members adjacent to, but slightly spaced from the end thereof, a plurality of alternating, tapered tenons and mortises extending longitudinally from said base surface toward the end of said wall member, the larger cross-section of said tenons being nearest the outer end thereof whereby said tenons are generally frustro-conical in shape, the transverse cross-section of both said mortises and said tenons being curved in substantially a sinuous pattern, and the base of said tenons being spaced from the inner surface of said side wall to form an undercut; (ii) a longitudinal base surface portion intermediate the inner and outer wall surfaces of said second wall member; a plurality of alternating, tapered tenons and mortises extending from said base surface in a direction transverse to the longitudinal dimension of said second side wall member, the side walls of said tenons being separated the greatest at the inner surface of said second wall member and converging inwardly toward said base surface whereby said tenons are generally frustro-conical, the cross-section of said tenons and mortises being curved in substantially a sinuous pattern; (c) a concealing means comprising a bevel in both of said wall members extending from the outer corner of each wall inwardly to the termination of said dovetail locking means; (d) whereby said dovetail locking means is completely concealed from view when the outer or inner corner of the joint construction is observed.
References Cited (Backward Citations)
US1067910A
Cited
US1533099A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |