Patent US4027413A successfully refreshed from Google Patents.
US4027413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clip for retaining a canvas stretcher frame in a decorative picture frame
Assignee: FAVIA MICHAEL L 18541 MONTPERE WAY SARATOGA CA 95070
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Filing: 1976-06-18
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Granted: 1977-06-07
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Expires: 1996-06-18
Abstract
Abstract A clip, two or more of which can be employed to retain a canvas stretcher frame within a decorative picture frame. Canvases are typically fixed to a frame formed of a plurality of stretcher bars having rectangular cross-sectional shapes, such frame being adapted for placement into a rabbet groove at the rear of the decorative frame. The disclosed clip has a main body of a length somewhat greater than the width of the stretcher bars. Extending from one end of the main body and integral therewith is a leg having at least one outward projecting point which is adapted to pierce the surface of the decorative frame that defines the rabbet groove. The main body extends across the rear surface of the stretcher bar and has a second leg which resiliently engages the inner edge of the stretcher bar as to retain the clip in place, which in turn retains the stretcher frame within the decorative frame.
Inventors
- 👤 Earl J. Moede
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:00
CPC Classifications
B; B44; B44D; B44D3/00; B44D3/18; B44D3/185; A; A47; A47G; A47G1/00; A47G1/06; A47G2001/0661; A47G2001/0677
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
292 words
An article of manufacture comprising a strip of resilient material having an elongate main body, a first leg extending from one end of the body and a second leg extending from the opposite end of the body, said first leg being generally normal to said main body and having at the distal end thereof at least one point extending outward therefrom in general parallelism with said main body, the material having sufficient strength that the point is substantially immovable relative to said first leg, said second leg having a resiliently deformable portion for effecting frictional engagement with a surface of a rigid bar disposed intermediate said first and second legs, said article of manufacture affording installation of a first polygonal canvas stretcher frame into a second decorative frame which has a rabbet groove for receiving said first frame thereinto, said second frame being proportioned so that a clearance space is defined between the outer edge of said first frame and a surface of said rabbet groove which clearance space is less than the extent of said point, said first frame being formed of stretcher bars having a width greater than the distance between said first leg and said resiliently deformable portion and a thickness greater than the length of said first and second legs so that said point can be introduced into said clearance space and the article can be rotated to cause said point to be pierced into a portion of said second frame defining said rabbet groove and to bring said main body against the rear surface of said stretcher bar there to be retained by frictional engagement between said resiliently deformable portion on said second leg and an edge surface of said stretcher bar remote from said rabbet groove.
Claim 2
Dependent Claim
292 words
An article of manufacture comprising a strip of resilient material having an elongate main body, a first leg extending from one end of the body and a second leg extending from the opposite end of the body, said first leg being generally normal to said main body and having at the distal end thereof at least one point extending outward therefrom in general parallelism with said main body, the material having sufficient strength that the point is substantially immovable relative to said first leg, said second leg having a resiliently deformable portion for effecting frictional engagement with a surface of a rigid bar disposed intermediate said first and second legs, said article of manufacture affording installation of a first polygonal canvas stretcher frame into a second decorative frame which has a rabbet groove for receiving said first frame thereinto, said second frame being proportioned so that a clearance space is defined between the outer edge of said first frame and a surface of said rabbet groove which clearance space is less than the extent of said point, said first frame being formed of stretcher bars having a width greater than the distance between said first leg and said resiliently deformable portion and a thickness greater than the length of said first and second legs so that said point can be introduced into said clearance space and the article can be rotated to cause said point to be pierced into a portion of said second frame defining said rabbet groove and to bring said main body against the rear surface of said stretcher bar there to be retained by frictional engagement between said resiliently deformable portion on said second leg and an edge surface of said stretcher bar remote from said rabbet groove.
Claim 3
Dependent Claim
49 words
An article of manufacture according to claim 1 wherein said second leg includes a proximal portion extending from said main body and a distal portion integral with said proximal portion, said distal portion being disposed in the space intermediate said first and second legs and constituting said resilient means.
Claim 4
Dependent Claim
36 words
An article of manufacture according to claim 2 wherein said proximal portion and said distal portion of said second leg form a generally V-shaped configuration, said distal portion having a free end constituting said friction surface.
Claim 5
Dependent Claim
32 words
An article of manufacture according to claim 3 wherein said free end and said point on said first leg are complementally shaped so that both can be formed by one machine operation.
Claim 6
Dependent Claim
36 words
An article of manufacture according to claim 1 including a second point spaced laterally from first said point, said points extending from opposite edges of said strip to pierce said rabbet groove at spaced apart points.
Claim 7
Dependent Claim
36 words
An article of manufacture according to claim 1, wherein a portion of said main body adjacent said first leg defines a hole, said hole being sized to receive a small nail or a picture wire therethrough.
Claim 8
Dependent Claim
29 words
An article of manufacture according to claim 1 wherein said strip has a width of approximately 1/2 inch and a heat treat range of approximately 113,000 - 140,000 psi.
Claim 9
Dependent Claim
182 words
A clip for securing a rigid bar having a generally rectangular cross sectional shape to a member having a rabbet groove therein, the rabbet groove having a rearward facing surface and an inward facing surface perpendicular to the rearward facing surface and the clip acting to retain the bar in contact with the rearward facing surface, said clip comprising a strip of resilient material having an elongate main body, a first leg extending generally perpendicularly from one end of the body and a second leg extending generally perpendicularly from the opposite end of the body so as to receive said bar therebetween, said first leg being generally normal to said main body and having at the distal end thereof at least one point extending outward therefrom in general parallelism with said main body and substantially immovable relative thereto for piercing entry into said inward facing surface, said second leg having a resilient portion for effecting frictional engagement with said bar when said bar is received between said legs so as to retain said point in piercing relation to said inward facing surface.
Claim 10
Dependent Claim
182 words
A clip for securing a rigid bar having a generally rectangular cross sectional shape to a member having a rabbet groove therein, the rabbet groove having a rearward facing surface and an inward facing surface perpendicular to the rearward facing surface and the clip acting to retain the bar in contact with the rearward facing surface, said clip comprising a strip of resilient material having an elongate main body, a first leg extending generally perpendicularly from one end of the body and a second leg extending generally perpendicularly from the opposite end of the body so as to receive said bar therebetween, said first leg being generally normal to said main body and having at the distal end thereof at least one point extending outward therefrom in general parallelism with said main body and substantially immovable relative thereto for piercing entry into said inward facing surface, said second leg having a resilient portion for effecting frictional engagement with said bar when said bar is received between said legs so as to retain said point in piercing relation to said inward facing surface.
Claim 11
Independent Claim
222 words
A method for retaining a canvas stretcher frame into a rabbet groove in the rear of a decorative frame, which rabbet groove has a rearward facing surface and an inward facing surface perpendicular to the rearward facing surface, the method comprising the steps of: providing a clip having an elongate main body, a first leg extending generally perpendicularly from one end of the body, at least one point extending outward from the distal extremity of the first leg and a second leg extending generally perpendicularly from the other end of the body and having a resilient portion for effecting frictional engagement of a stretcher bar between the first and second legs; installing the stretcher frame in the rabbet groove with the surface of the canvas on the frame contacting the rearward facing surface of the rabbet groove; then placing the point and the first leg of the clip into the clearance space between the stretcher frame and the inward facing surface of the rabbet groove with the body of the clip extending obliquely outward from the rear of the stretcher frame; and finally rotating the clip about a fulcrum formed by the site of engagement between the point and the inward facing surface of the rabbet groove to move the second leg of the clip into frictional engagement with the stretcher frame.
Claim 12
Independent Claim
222 words
A method for retaining a canvas stretcher frame into a rabbet groove in the rear of a decorative frame, which rabbet groove has a rearward facing surface and an inward facing surface perpendicular to the rearward facing surface, the method comprising the steps of: providing a clip having an elongate main body, a first leg extending generally perpendicularly from one end of the body, at least one point extending outward from the distal extremity of the first leg and a second leg extending generally perpendicularly from the other end of the body and having a resilient portion for effecting frictional engagement of a stretcher bar between the first and second legs; installing the stretcher frame in the rabbet groove with the surface of the canvas on the frame contacting the rearward facing surface of the rabbet groove; then placing the point and the first leg of the clip into the clearance space between the stretcher frame and the inward facing surface of the rabbet groove with the body of the clip extending obliquely outward from the rear of the stretcher frame; and finally rotating the clip about a fulcrum formed by the site of engagement between the point and the inward facing surface of the rabbet groove to move the second leg of the clip into frictional engagement with the stretcher frame.
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) | 1980-06-06 | 1980-12-06 | 1981-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-06 | 1984-12-06 | 1985-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-06 | 1988-12-06 | 1989-06-07 | $7700.00 | Window Closed / Lapsed |