US4637147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stretcher bars
Assignee: Individual
•
Filing: 1985-04-30
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Granted: 1987-01-20
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Expires: 2005-04-30
Abstract
Abstract Stretcher bars are provided, each having face and rear mitered sections and a tongue therebetween, the tongue cooperating with a mitered section to define a slot. At least one tongue section of each stretcher bar defines a bevel on a portion thereof remote from the side defining the slot to facilitate ready entry of the tongue sections into slots of mating stretcher bars in non-interfering relationship with the tongue and miter sections of mating bars.
Inventors
- 👤 Clarence K. Wolsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:24
CPC Classifications
D; D06; D06C; D06C3/00; D06C3/08; F; F16; F16B; F16B2200/00; F16B2200/65; F16B2200/67
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
187 words
For assembly in a generally rectangular stretch frame for artwork and the like, a plurality of elongated stretcher bars each having first and second end portions, a face surface and a rear surface, each of said stretcher bars having at each of its said first and second end portions a face mitered section, a rear mitered section and a tongue therebetween, the mitered sections being adapted for abutting engagement to form miter joints, the first end portion tongue being adjacent to the face mitered section and the second end portion tongue being adjacent to the rear mitered section, each tongue section cooperating with one of the mitered sections to define a slot adapted to receive a tongue of another stretcher bar, and at least one of the tongue sections of each stretcher bar defining a bevel on a corner portion thereof remote from the side defining said slot, thus to facilitate ready entry of the stretcher bar tongue sections into slots of mating adjoining bar tongue sections into slots of mating adjoining bars in non-interfering relationship with the tongue and mitered sections of mating bar end portions.
Claim 2
Dependent Claim
187 words
For assembly in a generally rectangular stretch frame for artwork and the like, a plurality of elongated stretcher bars each having first and second end portions, a face surface and a rear surface, each of said stretcher bars having at each of its said first and second end portions a face mitered section, a rear mitered section and a tongue therebetween, the mitered sections being adapted for abutting engagement to form miter joints, the first end portion tongue being adjacent to the face mitered section and the second end portion tongue being adjacent to the rear mitered section, each tongue section cooperating with one of the mitered sections to define a slot adapted to receive a tongue of another stretcher bar, and at least one of the tongue sections of each stretcher bar defining a bevel on a corner portion thereof remote from the side defining said slot, thus to facilitate ready entry of the stretcher bar tongue sections into slots of mating adjoining bar tongue sections into slots of mating adjoining bars in non-interfering relationship with the tongue and mitered sections of mating bar end portions.
Claim 3
Dependent Claim
20 words
An apparatus according to claim 1, wherein: the tongue sections of each end portion of each stretcher bar are beveled.
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) | 1990-01-19 | 1990-07-21 | 1991-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-19 | 1994-07-21 | 1995-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-19 | 1998-07-21 | 1999-01-20 | $7700.00 | Window Closed / Lapsed |