Patent US3690977A successfully refreshed from Google Patents.
Patent US4624341A successfully refreshed from Google Patents.
US4624341A
Expired / Lapsed
US
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Elevatable stool construction
Assignee: Individual
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Filing: 1985-09-03
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Granted: 1986-11-25
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Expires: 2005-09-03
Abstract
Abstract An extensible foot stool apparatus (10) comprising a generally conical housing unit (11) having retractable roller units (12), and adapted to slideably and releasably receive a generally cylindrical primary weight supporting unit (13) in both a retracted and extended mode.
Inventors
- 👤 David B. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:20
CPC Classifications
A; A47; A47C; A47C12/00; A47C12/02; A47C16/00; A47C16/02; A47C16/025
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
101 words
An extensible foot stool apparatus comprising: a generally conical housing member having an enlarged opening formed on its bottom end, and a relatively smaller opening formed on its top end; and a generally elongated cylindrical extension member having an enlarged support surface formed on its upper end, wherein the extension member is slideably disposed within said housing member, and further provided with temporary securing means on its lower end which releasably engage the upper portion of the housing member; wherein, the housing member is further provided with an inwardly extending shoulder element surrounding said relatively smaller opening on said top end.
Claim 2
Dependent Claim
101 words
An extensible foot stool apparatus comprising: a generally conical housing member having an enlarged opening formed on its bottom end, and a relatively smaller opening formed on its top end; and a generally elongated cylindrical extension member having an enlarged support surface formed on its upper end, wherein the extension member is slideably disposed within said housing member, and further provided with temporary securing means on its lower end which releasably engage the upper portion of the housing member; wherein, the housing member is further provided with an inwardly extending shoulder element surrounding said relatively smaller opening on said top end.
Claim 3
Dependent Claim
24 words
The foot stool apparatus as in claim 1; wherein, said shoulder element is further provided with a plurality of recesses disposed around its periphery.
Claim 4
Dependent Claim
42 words
The foot stool apparatus as in claim 2; wherein, said temporary securing means on said extension member comprise a plurality of securing brackets that are dimensioned to at least partially extend through said recesses on the shoulder element of said housing member.
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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |