US3783931A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for fixing a covering sheet inside a dihedron formed by two perpendicular surfaces
Assignee: Individual
•
Filing: 1973-02-12
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Granted: 1974-01-08
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Expires: 1993-02-12
Abstract
Abstract Device for fixing one or two covering sheets, such as hangings, inside a dihedron formed between two perpendicular surfaces, said device consisting of a section member comprising two wings extending at right angles to each other and adapted to be secured to the corresponding perpendicular surfaces, respectively. Said wings carry inside the angle or corner formed therebetween a pair of resilient blades projecting towards each other and having their ends curved or bent towards the apex of the angle formed by said wings, these wings contacting substantially each other in their inoperative or unstressed condition and carrying at their aforesaid ends in-turned lips extending substantially at right angles to the bisectrix of the angle formed between said wings, so as to constitute means for efficiently retaining an extrathickness of material formed along the marginal portion of the covering sheet to be fixed in position.
Inventors
- 👤 M Assael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:25
CPC Classifications
B; B44; B44C; B44C7/00; B44C7/02; B44C7/022; A; A47; A47H; A47H1/00; A47H1/18; Y; Y10; Y10T; Y10T24/00; Y10T24/44; Y10T24/44034; Y10T24/44043; Y10T24/4406
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
Device for fixing at least one covering sheet, inside a dihedron formed between two perpendicular surfaces, comprising a section member having two wings extending at right angles to each other and adapted to be secured to the corresponding perpendicular surfaces, respectively, a pair of resilient blades carried by said wings inside the angle or corner formed therebetween and projecting towards each other, the ends of said blades being curved toward the apex of the angle formed by said wings and contacting substantially each other in their unstressed condition, and in-turned lips carried by aforesaid ends and extending substantially at right angles to the bisectrix of the angle formed between said wings, whereby said lips constitute means for efficiently retaining an extra-thickness of material formed along the marginal portion of the covering sheet to be fixed in position.
Claim 2
Dependent Claim
137 words
Device for fixing at least one covering sheet, inside a dihedron formed between two perpendicular surfaces, comprising a section member having two wings extending at right angles to each other and adapted to be secured to the corresponding perpendicular surfaces, respectively, a pair of resilient blades carried by said wings inside the angle or corner formed therebetween and projecting towards each other, the ends of said blades being curved toward the apex of the angle formed by said wings and contacting substantially each other in their unstressed condition, and in-turned lips carried by aforesaid ends and extending substantially at right angles to the bisectrix of the angle formed between said wings, whereby said lips constitute means for efficiently retaining an extra-thickness of material formed along the marginal portion of the covering sheet to be fixed in position.
Claim 3
Dependent Claim
54 words
Device according to claim 1, comprising in combination with said section member, a rod adapted to be inserted inside the corresponding fold of a sole covering sheet disposd in front of said surfaces, said rod being adapted to form an extra thickness efficiently retained by said bent lips of said pair of resilient blades.
Claim 4
Dependent Claim
70 words
Device according to claim 1 wherein said bent lips of said pair of resilient blades are followed by a marginal strip bent in the opposite direction and providing a channel, the pair of channels thus formed registering with each other and being each adapted to receive therein the edge of a separate sheet disposed in front of the surface to which the corresponding wing of the section member is secured.
Claim 5
Dependent Claim
96 words
Device according to claim 1, wherein the adjacent ends of said pair of resilient blades are bent firstly towards the corresponding wing of said section member, then in the opposite direction to provide a pair of retaining lips substantially perpendicular to the bisectrix of the angle formed by said wings, and at the same time a pair of channels registering with each other in face to face relationship, each channel being adapted to receive the edge of a sheet disposed in front of the surface to which the corresponding wing of the second member is secured.
Claim 6
Dependent Claim
24 words
Device according to claim 3, wherein striations are forMed of the inner walls of the channels formed by the ends of said resilient blades.
Claim 7
Dependent Claim
24 words
Device according to claim 4, wherein striations are formed on the inner walls of the channels formed by the ends of said resilient blades.
References Cited (Backward Citations)
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US3166117A
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US3323819A
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US3371702A
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US3373546A
Cited
US3719013A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |