Patent US3589682A successfully refreshed from Google Patents.
US3589682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety fence support column
Assignee: Individual
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Filing: 1969-07-28
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Granted: 1971-06-29
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Expires: 1989-07-28
Abstract
Abstract A telescopic fence column for the erection of a safety fence or guard rail at a building under construction which incorporates upper and lower pads for contacting the ceiling and floor of a portion of the building, the pads being located at opposite ends of a telescopic column, and the column being provided with a manually operable jacking system for extending the column and forcing the pads firmly against the ceiling and floor of the building thereby holding the column firmly in position.
Inventors
- 👤 Edward Earl Dickey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/32; E04G21/3204; E04G21/3223; E04G21/3233; E04G25/00; E04G25/04; E04G25/06; E04G25/061; E04G25/063; E04G2025/045
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
223 words
An extendable support column device for erecting a safety fence between a floor and ceiling of a partially completed building, and comprising: a column portion of hollow tubular construction of a length less than the average minimum spacing between floor and ceiling and having upper and lower ends; bearing plate means on said upper end of said column portion; a telescoping extension member extending up a portion of the interior of said column portion from said lower end and having a free end adapted to extend therefrom; bearing plate means on said free end of said extension member; a series of equally spaced notches formed in said extension member along a major portion at least of its length; support flange means attached to said column portion at said lower end thereof; catch means movably mounted on said flange means and engageable with said notches in said extension member; lever means movably mounted on said flange means and connected with said catch means to operate same and sequentially engage said notches to procure progressive equal incremental movement of said extension means; resilient compressible friction pad means on said bearing plate means adapted to be compressed against said floor and ceiling, and rail attachment bracket means fastened to said column portion, and dimensioned to receive a fence rail therein for construction of said safety fence.
Claim 2
Dependent Claim
223 words
An extendable support column device for erecting a safety fence between a floor and ceiling of a partially completed building, and comprising: a column portion of hollow tubular construction of a length less than the average minimum spacing between floor and ceiling and having upper and lower ends; bearing plate means on said upper end of said column portion; a telescoping extension member extending up a portion of the interior of said column portion from said lower end and having a free end adapted to extend therefrom; bearing plate means on said free end of said extension member; a series of equally spaced notches formed in said extension member along a major portion at least of its length; support flange means attached to said column portion at said lower end thereof; catch means movably mounted on said flange means and engageable with said notches in said extension member; lever means movably mounted on said flange means and connected with said catch means to operate same and sequentially engage said notches to procure progressive equal incremental movement of said extension means; resilient compressible friction pad means on said bearing plate means adapted to be compressed against said floor and ceiling, and rail attachment bracket means fastened to said column portion, and dimensioned to receive a fence rail therein for construction of said safety fence.
Claim 3
Dependent Claim
29 words
The support column as claimed in claim 1 including attachment means adjacent to both of said bearing plate means for attachment of a weather proofing tarpaulin or the like.
Claim 4
Dependent Claim
44 words
The support column as claimed in claim 1 wherein said extension member is of generally T-shaped cross section having a stem portion and two arms, and wherein said equally spaced apart notches are formed in the stem portion of said T-shaped along its length.
Claim 5
Dependent Claim
41 words
The support column as claimed in claim 1 including plank attachment bracket means fastened adjacent to said bearing plate means on said extension member, for attaching and supporting a continuous foot board adjacent to the floor of said partially completed building.
Claim 6
Dependent Claim
77 words
The support column as claimed in claim 1 wherein said lever means incorporates a lever socket arm member arranged and located for upward and downward swinging movement in a vertical plane, a lever operating arm adapted to be inserted into said socket means, and a foot plate on said lever arm incorporating upper and lower plate portions adapted to engage and be engaged by either and upper or a lower portion of a foot of an operator.
Claim 7
Dependent Claim
36 words
The support column as claimed in claim 1 wherein said resilient friction pads are adapted to be compressed by an amount not less than a said predetermined increment and not more than about two said increments.
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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |