US4155312A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extendable shelf
Assignee: Individual
•
Filing: 1978-01-12
•
Granted: 1979-05-22
•
Expires: 1998-01-12
Abstract
Abstract A two piece, lengthwise telescopically adjustable, shelf adapted to be mounted between vertical structural members or studs in a building. The lengthwise adjustability permits use of the shelf arrangement in spite of wide variations in the center-to-center spacing between the structural members.
Inventors
- 👤 Joel B. Thorkildson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:23
CPC Classifications
A; A47; A47B; A47B45/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
291 words
A two piece, lengthwise adjustable shelf adapted to be mounted between two structural members, comprising: (a) a first sheet member having a generally rectangular planar surface of a predetermined length and width with a first integrally formed lip extending perpendicular to said planar surface along a first longitudinal edge thereof, a second integrally formed lip extending perpendicular to said planar surface along a second longitudinal edge thereof in a direction opposite to said first lip and including a generally U-shaped portion therealong, there being a predetermined spacing between opposed legs of said U-shaped portion slightly greater than the thickness of said first sheet member and an integrally formed end tab extending perpendicular to said planar surface along one transverse edge thereof; (b) a second sheet member having a generally rectangular planar surface of a predetermined length and width and a thickness generally equal to the thickness of said first sheet member with a first integrally formed U-shaped lip extending perpendicular to said planar surface along a first longitudinal edge thereof, there being a predetermined spacing between opposed legs of said U-shaped lip slightly greater than the thickness of said second sheet member, a second integrally formed lip extending perpendicular to said planar surface along a second longitudinal edge thereof in a direction opposite said first lip and including an edge portion therealong, and an integrally formed end tab extending perpendicular to said planar surface along one transverse edge thereof, the arrangement being such that said first lip on said first member is slidably engageable between the spaced apart legs of said U-shaped portion on said second member when the edge portion on said second member is slidingly engageable between the spaced apart legs of said U-shaped lip on said first member.
Claim 2
Dependent Claim
291 words
A two piece, lengthwise adjustable shelf adapted to be mounted between two structural members, comprising: (a) a first sheet member having a generally rectangular planar surface of a predetermined length and width with a first integrally formed lip extending perpendicular to said planar surface along a first longitudinal edge thereof, a second integrally formed lip extending perpendicular to said planar surface along a second longitudinal edge thereof in a direction opposite to said first lip and including a generally U-shaped portion therealong, there being a predetermined spacing between opposed legs of said U-shaped portion slightly greater than the thickness of said first sheet member and an integrally formed end tab extending perpendicular to said planar surface along one transverse edge thereof; (b) a second sheet member having a generally rectangular planar surface of a predetermined length and width and a thickness generally equal to the thickness of said first sheet member with a first integrally formed U-shaped lip extending perpendicular to said planar surface along a first longitudinal edge thereof, there being a predetermined spacing between opposed legs of said U-shaped lip slightly greater than the thickness of said second sheet member, a second integrally formed lip extending perpendicular to said planar surface along a second longitudinal edge thereof in a direction opposite said first lip and including an edge portion therealong, and an integrally formed end tab extending perpendicular to said planar surface along one transverse edge thereof, the arrangement being such that said first lip on said first member is slidably engageable between the spaced apart legs of said U-shaped portion on said second member when the edge portion on said second member is slidingly engageable between the spaced apart legs of said U-shaped lip on said first member.
Claim 3
Dependent Claim
44 words
The apparatus as in claim 1 and further including first and second spaced apart apertures on each of said end tabs of said first and second members adapted to receive fastening means for securing said slidingly engaged first and second members to structural members.
Claim 4
Dependent Claim
24 words
Apparatus as in claim 1 wherein said first and second members are formed from a class of materials including, sheet metal, plastic and cardboard.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |