US3823938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ping-pong table with swing top board
Assignee: Individual
•
Filing: 1973-01-12
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Granted: 1974-07-16
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Expires: 1993-01-12
Abstract
Abstract A Ping-pong table unit, forming one-half of a Ping-pong table and designed for use with an identical Ping-pong table unit to constitute a complete Ping-pong table, comprises a table top board pivotally mounted on main supporting legs forming an under frame provided with castors. Supplementary legs have respective adjusters on the lower ends thereof and their upper ends are pivotally connected to the lower surface of the top board. Connecting rods or links extend between the main legs and the supplementary legs, and folding link pairs connect the supporting main legs to the top board.
Inventors
- 👤 Y Unno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 01:29
CPC Classifications
A; A47; A47B; A47B25/00; A47B25/003
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
295 words
A Ping-pong table unit forming one-half of a Ping-pong table and designed for use with an identical Ping-pong table unit to constitute a complete Ping-pong table, said table unit comprising, in combination, a pair of laterally spaced elongated frame members; a pair of main support legs each secured to a respective elongated frame member to extend vertically therefrom; a table top, having a width equal to that of a Ping-pong table playing surface and a length equal to one-half that of such playing surface, pivotally mounted, at a pivot axis intermediate its ends, on the upper ends of said main support legs; respective pairs of pivotally interconnected first links connecting said main support legs, at pivot points thereon, to said table top at first pivot points on said table top spaced from said pivot axis toward one edge of said table top a distance such that, when said table top is swung to the horizontal position, said pairs of links are fully extended; a pair of supplementary legs pivotally secured at their upper ends to second pivot points on said table top adjacent the opposite end edge thereof, said supplementary legs having a length substantially equal to the height of said table top above a support surface when said table top is horizontal; and respective second links connecting said supplementary legs, at pivot points thereon, to said pivot points on said main support legs; said second links extending substantially horizontally when said table top is swung to the horizontal position; said second pivot points being spaced from said pivot axis a distance such that, when said table top is swung to a vertical position, with folding of said first links, said supplementary legs and said second links are aligned vertically with said main support legs.
Claim 2
Dependent Claim
295 words
A Ping-pong table unit forming one-half of a Ping-pong table and designed for use with an identical Ping-pong table unit to constitute a complete Ping-pong table, said table unit comprising, in combination, a pair of laterally spaced elongated frame members; a pair of main support legs each secured to a respective elongated frame member to extend vertically therefrom; a table top, having a width equal to that of a Ping-pong table playing surface and a length equal to one-half that of such playing surface, pivotally mounted, at a pivot axis intermediate its ends, on the upper ends of said main support legs; respective pairs of pivotally interconnected first links connecting said main support legs, at pivot points thereon, to said table top at first pivot points on said table top spaced from said pivot axis toward one edge of said table top a distance such that, when said table top is swung to the horizontal position, said pairs of links are fully extended; a pair of supplementary legs pivotally secured at their upper ends to second pivot points on said table top adjacent the opposite end edge thereof, said supplementary legs having a length substantially equal to the height of said table top above a support surface when said table top is horizontal; and respective second links connecting said supplementary legs, at pivot points thereon, to said pivot points on said main support legs; said second links extending substantially horizontally when said table top is swung to the horizontal position; said second pivot points being spaced from said pivot axis a distance such that, when said table top is swung to a vertical position, with folding of said first links, said supplementary legs and said second links are aligned vertically with said main support legs.
Claim 3
Dependent Claim
24 words
A Ping-pong table unit, as claimed in claim 1, including casters at each end of each elongated frame member supporting the associated frame member.
Claim 4
Dependent Claim
40 words
A Ping-pong table unit, as claimed in claim 1, in which the distance between said pivot axis and said first pivot points on said table top is less than the height of said pivot axis above said elongated frame members.
Claim 5
Dependent Claim
61 words
A Ping-pong table unit, as claimed in claim 1, including respective angle irons interconnecting the upper ends of said main support legs and the upper ends of said supplementary legs, each angle iron extending transversely of the under surface of said table top and being secured to said table top; and pivot bolts connecting each leg to the associated angle iron.
Claim 6
Dependent Claim
28 words
A Ping-pong table unit, as claimed in claim 4, including a cross member extending between and rigidly connected to said main support legs adjacent the lower ends thereof.
Claim 7
Dependent Claim
29 words
A Ping-pong table unit, as claimed in claim 1, in which said main support legs are secured to said elongated frame members substantially at the mid-points of the latter.
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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |