US4236847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal corner fittings for picture frames
Assignee: Individual
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Filing: 1979-01-12
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Granted: 1980-12-02
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Expires: 1999-01-12
Abstract
Abstract A metal corner fitting for a wooden picture frame having two leg pieces, the leg pieces having screw slits thereon which form an angle α between the back thereof and the back of a picture frame with the outside edge of the leg pieces making contact with the back of the frame piece. The screw slits extend through the leg pieces at a slight angle so that they are inclined toward the corner portion of the corner metal fitting at an angle β.
Inventors
- 👤 Hiroaki Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:10
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/10; F16B12/12; F16B12/22; A; A47; A47G; A47G1/00; A47G1/06; A47G1/10; A47G1/101; A47G1/102; E; E06; E06B; E06B3/00; E06B3/96; E06B3/984; E06B3/9845; F16B5/00; F16B5/06; F16B5/0607; F16B5/0614; F16B2200/00; F16B2200/65; F16B2200/67
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
113 words
A metal corner fitting for a wooden picture frame, comprising: two leg pieces attached to each other to form an L and having a portion of the top surface a flat plane surface, shaped so that the surface opposite the top surface at least at the ends of said leg pieces being at an angle α to said portion of the top surface; said leg pieces further having slits therethrough, with the axes of said slits being inclined slightly through said leg pieces from the perpendicular to said portion of the top surface away from the ends of said leg pieces for allowing screws to be driven therethrough for assembling said picture frame.
Claim 2
Dependent Claim
113 words
A metal corner fitting for a wooden picture frame, comprising: two leg pieces attached to each other to form an L and having a portion of the top surface a flat plane surface, shaped so that the surface opposite the top surface at least at the ends of said leg pieces being at an angle α to said portion of the top surface; said leg pieces further having slits therethrough, with the axes of said slits being inclined slightly through said leg pieces from the perpendicular to said portion of the top surface away from the ends of said leg pieces for allowing screws to be driven therethrough for assembling said picture frame.
Claim 3
Dependent Claim
23 words
A metal corner fitting as defined in claim 1 wherein the ends of said leg pieces are bent slightly at said angle α.
Claim 4
Dependent Claim
55 words
A metal corner fitting as defined in claim 1 wherein said leg pieces are of differeing thickness along their length with an outer portion of said leg pieces being thickest and tapering decreasingly toward the inner portion of said leg pieces for causing said surface opposite said top surface to be at said angle α.
Claim 5
Dependent Claim
50 words
A metal corner fitting as defined in claim 1 wherein said slits are shaped on said top surface of said leg pieces in the form of a tapering ellipse with the greater diameter portion located closest to said portion of said leg pieces where they are attached to each other.
Claim 6
Dependent Claim
42 words
A metal corner fitting as defined in claim 1 wherein said leg pieces are bent slightly to form an angle β between said flat plane top surface of leg pieces and said portion of said leg pieces where said slits are located.
Claim 7
Dependent Claim
52 words
A metal corner fitting as defined in claim 1 in which said slits have a countersink formed where said slits are located on said leg pieces for forming an angle β between said flat plane top surface of leg pieces and said portion of said leg pieces where said slits are located.
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) | 1983-12-02 | 1984-06-02 | 1984-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-02 | 1988-06-02 | 1988-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-02 | 1992-06-02 | 1992-12-02 | $7700.00 | Window Closed / Lapsed |