US3822101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Releasable corner connection device for hollow sections
Assignee: Rio Tinto Switzerland AG
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Filing: 1972-03-22
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Granted: 1974-07-02
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Expires: 1992-03-22
Abstract
Abstract The disclosure is concerned with a corner jointing device for mitred hollow sections which have to be assembled into window or door frames. The device comprises an angle piece and at least one tightening piece which both have corresponding wedge surfaces running parallel to the longitudinal axis of the frame members and at an acute angle to the transverse axis of the respective frame members, and at least one screw inserted in the direction of a transverse axis of the respective frame member. The tightening of the screw, as a consequence of the wedge surfaces, presses the angle piece and the tightening piece against at least three walls of the frame members cavity.
Inventors
- 👤 J Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:22
CPC Classifications
E; E06; E06B; E06B3/00; E06B3/96; E06B3/964; E06B3/968; E06B3/972; E06B3/9725; F; F16; F16B; F16B2200/00; F16B2200/65; Y; Y10; Y10T; Y10T403/00; Y10T403/55; Y10T403/555; Y10T403/557
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
204 words
A releasable corner connection device for frame sections having cavities defined therein, said sections meeting at an angle and being mitred at their ends, comprising an angle piece having two legs each engaging the cavity of a section, and at least one tightening piece and one screw having a head for each section, said tightening piece and said section being provided with bores generally algined and transverse to the longitudinal axis of the tightening piece and section, said bore in said tightening piece being threaded, said angle piece and said tightening piece having cooperating wedge surfaces and being so constructed and arranged with said screw that turning of said screw in said threaded bore will cause said tightening piece to move in a direction transverse to said axis producing at least binding engagement between said angle piece and said section thereby joining the section, angle piece and tightening piece by wedging action whereby the wedge surfaces of both said angle piece and said tightening piece extend parallel to said longitudinal axis and make an acute angle with the direction of the bore, and said screw is threadable in said direction in said bore and bearing with the head of said screw upon said section.
Claim 2
Dependent Claim
204 words
A releasable corner connection device for frame sections having cavities defined therein, said sections meeting at an angle and being mitred at their ends, comprising an angle piece having two legs each engaging the cavity of a section, and at least one tightening piece and one screw having a head for each section, said tightening piece and said section being provided with bores generally algined and transverse to the longitudinal axis of the tightening piece and section, said bore in said tightening piece being threaded, said angle piece and said tightening piece having cooperating wedge surfaces and being so constructed and arranged with said screw that turning of said screw in said threaded bore will cause said tightening piece to move in a direction transverse to said axis producing at least binding engagement between said angle piece and said section thereby joining the section, angle piece and tightening piece by wedging action whereby the wedge surfaces of both said angle piece and said tightening piece extend parallel to said longitudinal axis and make an acute angle with the direction of the bore, and said screw is threadable in said direction in said bore and bearing with the head of said screw upon said section.
Claim 3
Dependent Claim
28 words
Releasable corner connection device according to claim 1, wherein the angle piece and tightening piece each have two wedging surfaces directed parallel to one another and arranged step-wise.
Claim 4
Dependent Claim
40 words
Releasable corner connection device according to claim 2, wherein associated with each of said angle piece legs there is a separate tightening piece, which complements the cross section of the angle piece substantially to the cross section of the cavity.
Claim 5
Dependent Claim
32 words
Releasable corner connection device according to claim 2, wherein the device has only one, angle shaped, tightening piece, which complements the angle piece substantially to the cross section of the strip cavity.
Claim 6
Dependent Claim
40 words
Releasable corner connection device according to claim 1, wherein the angle piece is divided longitudinally in the direction of the plane defined by the frame and each half has a wedging surface, said wedging surfaces being inclined to each other.
Claim 7
Dependent Claim
25 words
Releasable corner connection device according to claim 5, wherein the tightening piece is made angle shaped and inserted between the halves of the angle piece.
Claim 8
Dependent Claim
49 words
Releasable corner connection device according to claim 5, wherein the two halves of the angle piece are held together by short rods of resilient material, which are pressed into slots defined in the free end surfaces of the angle piece halves, extending transverse to the plane of the frame.
Claim 9
Dependent Claim
59 words
Releasable corner connection device according to claim 1, wherein the angle piece has a groove defined therein which groove is open in the direction of the plane of the frame, the side walls of said groove form the wedge surfaces diverging from one another towards an opening in said groove said opening being adapted for receiving said tightening piece.
Claim 10
Dependent Claim
39 words
Releasable corner connection device according to claim 8, wherein the bottom of the groove is convex towards the interior of the groove and the convexity of the bottom of the groove is decreased on tightening of the tightening piece.
Claim 11
Dependent Claim
39 words
Releasable corner connection deviCe according to claim 9, wherein short flanges are arranged, directed towards one another, at the free edges of the groove, said flanges being adapted to retain the tightening piece within said groove when placed therein.
Claim 12
Dependent Claim
42 words
Releasable corner connection device according to claim 5, wherein associated with each angle piece leg there is a tightening piece preferably in the form of a plate, in which at least two opposite sides form the wedge surfaces inclined to one another.
Claim 13
Dependent Claim
25 words
Releasable corner connection device according to claim 11, wherein the tightening piece lies in a correspondingly shaped recess defined in the associated angle piece leg.
Claim 14
Dependent Claim
22 words
Releasable corner connection device according to claim 12, wherein the recess is closed towards the free end of the angle piece leg.
Claim 15
Dependent Claim
63 words
Releasable corner connection device according to claim 13, wherein the tightening piece has at least one slot defined therein and the angle piece has at least one rib portion extending into the recess whereby the tightening piece is anchored to the angle piece at the surface lying in the recess of the angle piece leg by means of the slot and tongue engagement.
Claim 16
Dependent Claim
20 words
Releasable corner connection device according to claim 14, wherein the slot and tongue are additionally formed as a hooked connection.
Claim 17
Dependent Claim
25 words
Releasable corner connection device according to claim 14, wherein the slot and tongue are arranged in cross section parallel to the respective closest wedge surface.
Claim 18
Dependent Claim
20 words
Releasable corner connection device according to claim 1, wherein the screws are inserted in the direction parallel to the frame.
Claim 19
Dependent Claim
42 words
Releasable corner connection device according to claim 1, wherein only one angle piece leg is connected with the section with the help of tightening piece, while the second section is directly and fixedly connected with the angle piece leg associated with it.
References Cited (Backward Citations)
US3317227A
Cited
FR1460477A
Cited
US3434749A
Cited
US3485519A
Cited
US3484830A
Cited
US3514135A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-01 | 1977-12-31 | 1978-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-01 | 1981-12-31 | 1982-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-01 | 1985-12-31 | 1986-07-02 | $7700.00 | Window Closed / Lapsed |