US4139316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for connecting two inclined tubes to a leg or other tubular piece
Assignee: PRECISION Manufacturing Inc 2200 52ND AV LACHINE MONTREAL CANADA H8T 2Y6 A Co OF CANADA
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Filing: 1977-07-12
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Granted: 1979-02-13
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Expires: 1997-07-12
Abstract
Abstract The disclosure relates in general to the connection art and in particular to the connection of two inclined tubes to a leg or other tubular piece in tables or similar articles. For improving the stability of such connections the ends of the two inclined square tubes extending above the prongs of the corner piece are obliquely cut such that their one side entirely conceals the corresponding side of the prongs and extends up to the seat and each forms an extension of the outer defining edges of the seat extending in the longitudinal direction of the leg or tubular piece in order, together therewith, to be held in abutment against the leg or tubular piece, the seat being designed to be urged laterally together with its extensions formed by the square tubes, against the leg or tubular piece substantially only along the defining edges and the extensions.
Inventors
- 👤 Algot I. Svensson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:51
CPC Classifications
F; F16; F16B; F16B12/00; F16B12/44; F16B12/50; Y; Y10; Y10T; Y10T403/00; Y10T403/34; Y10T403/341; Y10T403/342; Y10T403/343; Y10T403/46; Y10T403/4602; Y10T403/55; Y10T403/555
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
145 words
Means for connecting an elongated piece and two square tubes making an angle to each other and to said elongated piece, comprising a corner piece; prongs on said corner piece projecting into the ends of said square tubes and detachably anchored thereto, an open seat formed in said corner piece for laterally receiving said elongated piece; the opening in said seat being slightly smaller than the cross-section of the elongated member so that contact between said seat and the elongated member is established along narrow linear contact surfaces, clamping means for holding said elongated piece against said linear contact surfaces, obliquely cut ends on said square tubes extending over the prongs of the corner piece so as to entirely conceal the sides of said prongs and extend up to the seat formed in the corner piece, and press the square tubes against the elongated piece.
Claim 2
Dependent Claim
145 words
Means for connecting an elongated piece and two square tubes making an angle to each other and to said elongated piece, comprising a corner piece; prongs on said corner piece projecting into the ends of said square tubes and detachably anchored thereto, an open seat formed in said corner piece for laterally receiving said elongated piece; the opening in said seat being slightly smaller than the cross-section of the elongated member so that contact between said seat and the elongated member is established along narrow linear contact surfaces, clamping means for holding said elongated piece against said linear contact surfaces, obliquely cut ends on said square tubes extending over the prongs of the corner piece so as to entirely conceal the sides of said prongs and extend up to the seat formed in the corner piece, and press the square tubes against the elongated piece.
Claim 3
Dependent Claim
148 words
Means for connecting an elongated piece of substantially circular cross-section and two square tubes making an angle to each other and to said elongated piece, comprising a corner piece; prongs on said corner piece projecting into the ends of said square tubes and detachably anchored thereto by means of an expander device, an open concave seat formed in said corner piece for laterally receiving said elongated piece; the radius of curvature of the seat being slightly smaller than that of the elongated piece so as to establish line contact between the seat and the elongated piece, clamping means for holding said elongated piece against said seat; and obliquely cut ends on said square tubes extending over the prongs of the corner piece so as to entirely conceal the sides of said prongs and extend up to the concave seat, and press the elongated piece against the corner piece.
Claim 4
Dependent Claim
148 words
Means for connecting an elongated piece of substantially circular cross-section and two square tubes making an angle to each other and to said elongated piece, comprising a corner piece; prongs on said corner piece projecting into the ends of said square tubes and detachably anchored thereto by means of an expander device, an open concave seat formed in said corner piece for laterally receiving said elongated piece; the radius of curvature of the seat being slightly smaller than that of the elongated piece so as to establish line contact between the seat and the elongated piece, clamping means for holding said elongated piece against said seat; and obliquely cut ends on said square tubes extending over the prongs of the corner piece so as to entirely conceal the sides of said prongs and extend up to the concave seat, and press the elongated piece against the corner piece.
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) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |