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US4072294A Expired / Lapsed US ⏱️ 0.0 years remaining

Tubular fence

Assignee: Individual
•
Filing: 1975-04-17
•
Granted: 1978-02-07
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Expires: 1995-04-17
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Abstract

Abstract A fence is assembled from tubular posts and open-ended tubular cross-pieces the ends of which are slidably supported on the posts and selectively secured in one of several discrete positions, for example by engaging transverse slots in the lower face of the cross-pieces on tabs in apertures in the posts. In another arrangement, flaps in the posts are folded in to form apertures slidably receiving ends of the cross-pieces, which are secured by selectively engaging pins in aligned holes in the flaps and cross-pieces. The fence may include a rectangular gate frame formed by folding a suitably cut-out tubular piece.

Inventors

  • 👤 Karl Thure Densen

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 06:35
CPC Classifications
E; E06; E06B; E06B11/00; E06B11/02; E04; E04F; E04F11/00; E04F11/18; E04F11/181; E04H; E04H17/00; E04H17/14; E04H17/16; E04H17/165; E04H17/166

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 194 words
A fence construction kit comprising, a plurality of individual tubular posts, a plurality of tubular cross-pieces each of generally uniform cross-section along its entire length and all having alike first and second ends, means defining apertures in the posts for receiving the ends of cross-pieces extending therein and for supporting the ends of the cross-pieces on the posts when the posts are upstanding and with the cross-pieces disposed transverse to the posts while allowing a relative movement of the cross-pieces and posts along an axial direction of the cross-pieces, said posts having upstanding tabs adjacent the periphery of said apertures, means defining in an end portion of each of the cross-pieces a plurality of recesses spaced-apart from one another along an axial direction of the cross-piece, said recesses of each end of a cross-piece being receptive of said tabs to selectively and releasably position cross-pieces axially relative to a post in any one of a plurality of discrete axial positions defined by said recesses, and locking means cooperative with the posts and the ends of the cross-pieces for releasably securing the cross-pieces in any one of said discrete axial positions relative to the posts.
Claim 2
Dependent Claim 194 words
A fence construction kit comprising, a plurality of individual tubular posts, a plurality of tubular cross-pieces each of generally uniform cross-section along its entire length and all having alike first and second ends, means defining apertures in the posts for receiving the ends of cross-pieces extending therein and for supporting the ends of the cross-pieces on the posts when the posts are upstanding and with the cross-pieces disposed transverse to the posts while allowing a relative movement of the cross-pieces and posts along an axial direction of the cross-pieces, said posts having upstanding tabs adjacent the periphery of said apertures, means defining in an end portion of each of the cross-pieces a plurality of recesses spaced-apart from one another along an axial direction of the cross-piece, said recesses of each end of a cross-piece being receptive of said tabs to selectively and releasably position cross-pieces axially relative to a post in any one of a plurality of discrete axial positions defined by said recesses, and locking means cooperative with the posts and the ends of the cross-pieces for releasably securing the cross-pieces in any one of said discrete axial positions relative to the posts.
Claim 3
Dependent Claim 63 words
A fence construction kit according to claim 1, in which said recesses in the ends of the cross-pieces cooperate with said tabs of the posts disposed adjacent lower edges of said apertures, and said locking means include members each wedged in use between an end portion of a cross-piece and a part of a post defining an upper edge of a corresponding aperture.
Claim 4
Dependent Claim 63 words
A fence construction kit according to claim 1, in which the cross-pieces are tubes of generally rectangular cross-section including longitudinal bulges toward edges of a narrower face thereof, said transverse recesses constituting pairs of transverse slots in said narrower face extending partly in said bulges, said posts having on adjacent lower edges of said aperture pairs of said tabs engageable in said slots.

References Cited (Backward Citations)

US3129965A Cited
US3195937A Cited
US3180663A Cited
US3595510A Cited
US3902703A Cited
US3848855A Cited
US3787033A Cited
US3848854A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-02-06 1981-08-08 1982-02-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-02-06 1985-08-08 1986-02-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-02-06 1989-08-08 1990-02-07 $7700.00 Window Closed / Lapsed

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