US3832756A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dual action hinge for folding doors
Assignee: Individual
•
Filing: 1973-07-02
•
Granted: 1974-09-03
•
Expires: 1993-07-02
Abstract
Abstract A folding door hinge having two pivot points and including a resilient member disposed intermediate two of the flaps extending from one of the pivot points provides a two step closing operation and prevents a snap action closing of a folding door.
Inventors
- 👤 H Lew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:35
CPC Classifications
E; E05; E05D; E05D3/00; E05D3/06; E05D3/12; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
149 words
A dual action hinge for pivotably connecting the panels of a folding door, said hinge comprising: a. a first hinge point having first and second flaps extending therefrom, said first flap including attachment means for securing said first flap to one of the folding door panels; b. a second hinge point secured to said second flap and including a third flap extending from said second hinge point, said third flap including further attachment means for securing said third flap to another of the folding door panels; c. bias means urging said first and second flaps to pivot apart from one another; and d. latch means for releasably engaging said first flap with said third flap to counter the force of said bias means; whereby, the panels are pivotably connected to one another and pivotally biased apart from one another by said bias means when said latch means is unengaged.
Claim 2
Dependent Claim
149 words
A dual action hinge for pivotably connecting the panels of a folding door, said hinge comprising: a. a first hinge point having first and second flaps extending therefrom, said first flap including attachment means for securing said first flap to one of the folding door panels; b. a second hinge point secured to said second flap and including a third flap extending from said second hinge point, said third flap including further attachment means for securing said third flap to another of the folding door panels; c. bias means urging said first and second flaps to pivot apart from one another; and d. latch means for releasably engaging said first flap with said third flap to counter the force of said bias means; whereby, the panels are pivotably connected to one another and pivotally biased apart from one another by said bias means when said latch means is unengaged.
Claim 3
Dependent Claim
37 words
The combination as set forth in claim 1 including stop means forming a part of said first and second flap for limiting the pivotal movement between said first and second flaps in response to said bias means.
Claim 4
Dependent Claim
26 words
The combination as set forth in claim 2 wherein said third flap is rotatable about said second hinge point through an angle of at least 180*.
Claim 5
Dependent Claim
32 words
The combination as set forth in claim 1 wherein said latch means includes a protrusion extending from said first flap and an aperture disposed within said third flap for receiving said protrusion.
Claim 6
Dependent Claim
18 words
The combination as set forth in claim 1 wherein said bias means is formed of resilient sheet metal.
Claim 7
Dependent Claim
45 words
The combination as set forth in claim 2 wherein said first flap includes a flange extending therefrom at an angle of 90*, said attachment means being disposed in said flange, whereby said flange is positionable adjacent one edge of one of the folding door panels.
Claim 8
Dependent Claim
48 words
The combination as set forth in claim 6 wherein said third flap extends from said second hinge point for engagement with one edge of another of the folding door panels, whereby said flange and said third flap are adjacent one another when the folding door is fully unfolded.
Claim 9
Dependent Claim
46 words
The combination as set forth in claim 2 wherein said third flap is bent approximately 90* along a line between said aperture receiving said latch and said attachment means, whereby said third flap is positionable on the rear surface of one of the folding door panels.
Claim 10
Dependent Claim
32 words
The combination as set forth iN claim 8 wherein said first flap includes attachment means, whereby said first flap is positionable on the rear surface of another of the folding door panels.
References Cited (Backward Citations)
US1155161A
Cited
US2277176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-02 | 1978-03-04 | 1978-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-02 | 1982-03-04 | 1982-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-02 | 1986-03-04 | 1986-09-03 | $7700.00 | Window Closed / Lapsed |