Patent US3575372A successfully refreshed from Google Patents.
US3575372A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor socket
Assignee: Madsen Manufacturing Ltd
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Filing: 1968-11-29
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Granted: 1971-04-20
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Expires: 1988-11-29
Abstract
Abstract An anchor socket for a gymnasium floor is formed of a tubular well with interior threads cooperating with the exterior threads of a tubular anchor assembly rotatable in the well. The anchor assembly has a hinged hook for securing an anchor stay.
Inventors
- 👤 John Ernest Emberson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:28
CPC Classifications
A; A63; A63B; A63B71/00; A63B71/02; A63B71/023; A63B71/028
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
158 words
A floor socket consisting of an annular dished plate member secured to said floor, a hinged cover to said plate, said cover in the closed position lying flush with said floor, a tubular well aligned with the annulus of said dished plate, said well being secured to the underside of said dished plate, interior threads on said well, a tubular anchor member in said well having exterior threads cooperating with said interior threads, an upwardly pivotable arm on one side of said anchor member, said arm having a hook intermediate of its ends, the downward movement of said arm being terminated when its free end meets the opposed side of said tubular member, said anchor member due to said cooperating threads being freely swivelable both upwards to extend through said annular dished plate member and downwards to a position where its upper end and downwardly positioned pivotable arm both lie below the level of said cover when closed.
Claim 2
Dependent Claim
158 words
A floor socket consisting of an annular dished plate member secured to said floor, a hinged cover to said plate, said cover in the closed position lying flush with said floor, a tubular well aligned with the annulus of said dished plate, said well being secured to the underside of said dished plate, interior threads on said well, a tubular anchor member in said well having exterior threads cooperating with said interior threads, an upwardly pivotable arm on one side of said anchor member, said arm having a hook intermediate of its ends, the downward movement of said arm being terminated when its free end meets the opposed side of said tubular member, said anchor member due to said cooperating threads being freely swivelable both upwards to extend through said annular dished plate member and downwards to a position where its upper end and downwardly positioned pivotable arm both lie below the level of said cover when closed.
Claim 3
Dependent Claim
25 words
A floor socket according to claim 1 wherein said well has a restricted lower portion to terminate the swivelable downward movement of said anchor member.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |