US3977044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge having locked in pintles
Assignee: Individual
•
Filing: 1975-10-09
•
Granted: 1976-08-31
•
Expires: 1995-10-09
Abstract
Abstract A hinge plate has an arcuate knuckle which inter-fits with the knuckle joint of a door jamb, the knuckles being secured to each other by a pair of pintles in the hinge knuckle which are urged in opposite directions by a spring and held in movable relation partly within the hinge knuckle by press fit bushings.
Inventors
- 👤 Edgar A. Mort
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:37
CPC Classifications
E; E05; E05D; E05D7/00; E05D7/10; E05D7/1005; E05D7/1011; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
In a door hinge comprising a hinge plate and a door jamb, knuckles on said hinge plate and door jamb, said knuckles being offset from the planes of the hinge plate and the door jamb, cutaway areas in the knuckle on the door jamb for the reception of the knuckle on the hinge plate, a pair of oppositely disposed pintles, each slidably extending through an end of the bore in said knuckle on the hinge plate, a spring between said pintles urging them apart; each of said pintles having adjacent portions of different large and small diameters, oppositely disposed flanged bushings positioned with a press fit securely within the opposite ends of the knuckle bore on the hinge plate and defining passageways in which the portions of said pintles having said smaller diameters are slidable, said flanged bushings arranged to retain the portions of the pintles having the larger diameters within said knuckle on said hinge plate and provide wearing surfaces therefor.
Claim 2
Dependent Claim
162 words
In a door hinge comprising a hinge plate and a door jamb, knuckles on said hinge plate and door jamb, said knuckles being offset from the planes of the hinge plate and the door jamb, cutaway areas in the knuckle on the door jamb for the reception of the knuckle on the hinge plate, a pair of oppositely disposed pintles, each slidably extending through an end of the bore in said knuckle on the hinge plate, a spring between said pintles urging them apart; each of said pintles having adjacent portions of different large and small diameters, oppositely disposed flanged bushings positioned with a press fit securely within the opposite ends of the knuckle bore on the hinge plate and defining passageways in which the portions of said pintles having said smaller diameters are slidable, said flanged bushings arranged to retain the portions of the pintles having the larger diameters within said knuckle on said hinge plate and provide wearing surfaces therefor.
Claim 3
Dependent Claim
26 words
The door hinge set forth in claim 1 and wherein said knuckles on said hinge plate and door jamb are of the same cross sectional configuration.
Claim 4
Dependent Claim
80 words
The door hinge set forth in claim 1 and wherein said knuckle on said hinge plate is of a first configuration having an inner diameter slidably receiving the portions of said pintles having the larger diameters and wherein said knuckle on said door jamb is of a second configuration having an inner diameter slidably receiving the smaller diameter portions of said pintles and wherein portions of said pintles extend beyond said flanged bushings in the knuckle on said hinge plate.
Claim 5
Dependent Claim
52 words
The door hinge set forth in claim 1 and wherein said knuckle on said hinge plate has cutaway areas at its opposite ends and wherein said flanges of said press fit flanged bushings are positioned in said cutaway areas with their opposite outer surfaces flush with the ends of said hinge plate.
References Cited (Backward Citations)
US2534998A
Cited
US2903735A
Cited
US3078502A
Cited
US3015126A
Cited
US3216053A
Cited
US3908227A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |