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US3880394A Expired / Lapsed US ⏱️ 0.0 years remaining

Extensible load bracing device

Assignee: Bishop Wisecarver Corp
•
Filing: 1973-11-08
•
Granted: 1975-04-29
•
Expires: 1993-11-08
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Abstract

Abstract The bracing device has a steel tube with a rubber covered foot at one end thereof, which tube has a rectangular cross-section; a sleeve is welded inside of the tube and a threaded rod is extended through the sleeve. The inner end of the threaded rod has a square washer slideably fitting into the interior of the tube so as to prevent the rotation of the threaded rod; on the outer end of the threaded rod is the other rubber covered foot for bracing; for adjusting the length of the brace a nut is provided on the threaded rod adjacent the open end of the tube, which nut has a hexagonal portion and a cylindrical portion, and an enlarged disk at each end for manually turning of the nut; a captive wrench is permanently on the nut; the hexagonal opening on the captive wrench fits over the hexagonal portion of the nut but is freely movable over the reduced cylindrical portion of the nut whereby the wrench can be located on the hexagonal portion of the nut in any selected position for conveniently turning the nut in restricted space for changing the length of the brace.

Inventors

  • 👤 Warren R Wisecarver

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-27 11:18
CPC Classifications
E; E04; E04G; E04G25/00; E04G25/04; E04G25/06; E04G25/065; E04G2025/042

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 230 words
In an extensible load bracing device for engagement with opposite walls, a tubular member of polygonal cross-section, a threaded rod telescoped in the tubular member, a fixed sleeve in said tubular member having cylindrical inner periphery to slideably hold said rod, said rod being extended beyond an end of said tubular member, a foot on the other end of said tubular member, a foot on the outer end of said rod, a nut threaded on said rod adjacent said tubular member, a neck of reduced diameter on said nut, a wrench head fitting over said nut for turning the nut, said reduced portion being of smaller diameter than the interior of the wrench head to allow loose angular adjustment of said wrench head, a wrench handle extended from said wrench head for manipulating said wrench head for repeated turning of said nut, and an enlarged disk on each end of said nut for manually turning the nut independently of the wrench head, the interior of said wrench head forming a socket fitting over said nut being loosely turnable on said cylindrical portion, and a head on the rod having polygonal periphery slidable in the polygonal inner periphery in said tubular member, the inner end of said fixed sleeve being spaced from foot end of the tubular member to determine the limit of movement of said head and of said rod.
Claim 2
Dependent Claim 230 words
In an extensible load bracing device for engagement with opposite walls, a tubular member of polygonal cross-section, a threaded rod telescoped in the tubular member, a fixed sleeve in said tubular member having cylindrical inner periphery to slideably hold said rod, said rod being extended beyond an end of said tubular member, a foot on the other end of said tubular member, a foot on the outer end of said rod, a nut threaded on said rod adjacent said tubular member, a neck of reduced diameter on said nut, a wrench head fitting over said nut for turning the nut, said reduced portion being of smaller diameter than the interior of the wrench head to allow loose angular adjustment of said wrench head, a wrench handle extended from said wrench head for manipulating said wrench head for repeated turning of said nut, and an enlarged disk on each end of said nut for manually turning the nut independently of the wrench head, the interior of said wrench head forming a socket fitting over said nut being loosely turnable on said cylindrical portion, and a head on the rod having polygonal periphery slidable in the polygonal inner periphery in said tubular member, the inner end of said fixed sleeve being spaced from foot end of the tubular member to determine the limit of movement of said head and of said rod.

References Cited (Backward Citations)

US1778576A Cited
US1951660A Cited
US2648997A Cited
US2725989A Cited
US2813733A Cited
US2974806A Cited
US3027140A Cited
US3171627A Cited
US3329388A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-04-28 1978-10-28 1979-04-29 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-04-28 1982-10-28 1983-04-29 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-04-28 1986-10-28 1987-04-29 $7700.00 Window Closed / Lapsed

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