US4064814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-leveling extendable table
Assignee: INSTITUTE FOR SOCIAL AND SCIENTIFIC DEVELOPMENT 376 EAST 400 SOUTH NO 315 SALT LAKE CITY UTAH 84111 A CORP OF UTAH
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Filing: 1977-03-07
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Granted: 1977-12-27
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Expires: 1997-03-07
Abstract
Abstract A self-leveling table has a rectangular top bolted to a unitized base. The base has a horizontal rectangular frame which supports the top fabricated from four welded angle irons. The frame is supported by two pairs of crossed legs, welded at the cross, each of which terminate in a foot. The feet are heavy sheet metal bent slightly so as to touch the floor only at the ends. The table top is fitted with latching devices at each end of the top for attachment of a table extension or another table.
Inventors
- 👤 Joseph E. Pokorny
- 👤 Richard N. Keller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:59
CPC Classifications
A; A47; A47B; A47B91/00; A47B91/16; A47B1/00; A47B1/04; A47B13/00; A47B13/02; A47B13/06; A47B87/00; A47B87/002
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
127 words
A table which tends to be stable and to maintain the top in a horizontal plane when set on a slightly irregular surface comprising a rectangular horizontal flat top affixed to a base, the base comprising: a horizontal rectangular angle iron support frame, a plurality of pairs, disposed lengthwise, of tubular crossed legs, the legs of each pair being fixably mounted to and depending downward from opposing lengthwise sections of the angle iron support frame, and being immovably attached to each other at the point of crossing, each pair of legs affixed to a foot comprising a substantially flat member situated widthwise to the table, said flat member being slightly arched so as to contact a supporting floor surface only at the ends of the flat member.
Claim 2
Dependent Claim
127 words
A table which tends to be stable and to maintain the top in a horizontal plane when set on a slightly irregular surface comprising a rectangular horizontal flat top affixed to a base, the base comprising: a horizontal rectangular angle iron support frame, a plurality of pairs, disposed lengthwise, of tubular crossed legs, the legs of each pair being fixably mounted to and depending downward from opposing lengthwise sections of the angle iron support frame, and being immovably attached to each other at the point of crossing, each pair of legs affixed to a foot comprising a substantially flat member situated widthwise to the table, said flat member being slightly arched so as to contact a supporting floor surface only at the ends of the flat member.
Claim 3
Dependent Claim
37 words
The table of claim 1 having fastening means at each end of the rectangular top for removably attaching to the top in the same plane a horizontal planar surface of similar width and thickness as the top.
Claim 4
Dependent Claim
65 words
The table of claim 1 having one male part and one female part of fastening means attached to each end of the top, the male parts being located on diagonally opposing sides of the ends of the top such that a planar surface having similarly arranged fastening means may be locked into a horizontal position adjacent to and in the same plane as the top.
Claim 5
Dependent Claim
19 words
The table of claim 1 wherein the length of the horizontal flat top is at least twice its width.
Claim 6
Dependent Claim
20 words
The table of claim 1 wherein the length of the horizontal flat top is at least three times its width.
Claim 7
Dependent Claim
52 words
The table of claim 1 wherein a plurality of leaf members are hingedly associated with the rectangular horizontal flat top, the leaf members being movable between a fixed position extending in the same plane as the top, and a second fixed position in which the leaves are folded back under the top.
Claim 8
Dependent Claim
30 words
The table of claim 2 wherein the length of the horizontal flat top member is at least twice its width when the leaf members are in the fully extended position.
Claim 9
Dependent Claim
56 words
The table of claim 2 wherein each foot has a width of at least 2 inches and a length greater than the width of the table when all of the leaves are in the folded back position but less than the width of the table when all of the leaves are in the fully extended position.
References Cited (Backward Citations)
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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) | 1980-12-26 | 1981-06-27 | 1981-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-26 | 1985-06-27 | 1985-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-26 | 1989-06-27 | 1989-12-27 | $7700.00 | Window Closed / Lapsed |