Patent US5422694A successfully refreshed from Google Patents.
Patent US3600743A successfully refreshed from Google Patents.
US3600743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-closing hinge
Assignee: David Allison Co Inc
•
Filing: 1969-10-17
•
Granted: 1971-08-24
•
Expires: 1989-10-17
Abstract
Abstract A self-closing hinge having a hinge pin with a flattened section mounted to rotate with a first hinge plate and a resilient sleeve positioned on a second hinge plate disposed concentrically about said pin and having a complementary flattened portion adapted to pivotally engage an edge of the flattened portion of the hinge pin so as to cause a door to shift towards a closed position and to be biased in said closed position.
Inventors
- 👤 Ray Meadows
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:33
CPC Classifications
E; E05; E05D; E05D11/00; E05D11/10; E05D11/1028; E05D11/105; E05Y; E05Y2900/00; E05Y2900/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
192 words
A self-closing hinge comprising: a. first and second hinge plates; b. bracket means connected integrally to said first hinge plate; c. a pair of spaced-apart axially aligned knuckles connected to said bracket means forming a channel therebetween; d. a hinge pin for pivotally connecting said first and second hinge plates, said hinge pin having a flattened portion extending along a substantial portion of its axial length, the balance of said pin having a circular configuration, said hinge pin being spaced within said channel and extending through said knuckles; e. means for connecting said hinge pin to said knuckles such that said first hinge plate rotates with said hinge pin; and f. a spring steel hinge sleeve connected to said second hinge plate and spaced in the channel between said knuckles, said hinge sleeve disposed about said hinge pin in at least a partially flexed condition, said sleeve having a complementary circular portion and flattened portion to said hinge pin for releasably engaging the flattened portion of said hinge pin a the hinge approaches the closed position so as to cause the hinge to shift toward and be biased in the closed positiOn.
Claim 2
Dependent Claim
192 words
A self-closing hinge comprising: a. first and second hinge plates; b. bracket means connected integrally to said first hinge plate; c. a pair of spaced-apart axially aligned knuckles connected to said bracket means forming a channel therebetween; d. a hinge pin for pivotally connecting said first and second hinge plates, said hinge pin having a flattened portion extending along a substantial portion of its axial length, the balance of said pin having a circular configuration, said hinge pin being spaced within said channel and extending through said knuckles; e. means for connecting said hinge pin to said knuckles such that said first hinge plate rotates with said hinge pin; and f. a spring steel hinge sleeve connected to said second hinge plate and spaced in the channel between said knuckles, said hinge sleeve disposed about said hinge pin in at least a partially flexed condition, said sleeve having a complementary circular portion and flattened portion to said hinge pin for releasably engaging the flattened portion of said hinge pin a the hinge approaches the closed position so as to cause the hinge to shift toward and be biased in the closed positiOn.
Claim 3
Dependent Claim
68 words
The invention in accordance with claim 1 wherein the hinge pin has a protruding shoulder at each end thereof, the flattened portion of said hinge pin extending the axial length of the pin terminating at the shoulders of the pin, the balance of the pin having a circular configuration and wherein each of said knuckles has a complementary cutaway portion for receiving and nonrotatably retaining said hinge pin.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |