US3725973A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hinge with radial and thrust bearings
Assignee: MC KINNEY Manufacturing CO
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Filing: 1970-10-28
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Granted: 1973-04-10
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Expires: 1990-10-28
Abstract
Abstract A hinge leaf knuckle has in at least one end a socket around the pin that connects two leaves together. Fitting in this socket around the pin is a thrust bearing retainer that has a base engaging the inner end of the socket and the pin to form a radial bearing. The retainer side wall is spaced from the pin. A thrust bearing is disposed in the retainer around the pin and projects from the socket and retainer into engagement with the adjoining knuckle. At least one of these bearings is an anti-friction plastic. Preferably, both are.
Inventors
- 👤 J Gwozdz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:48
CPC Classifications
E; E05; E05D; E05D5/00; E05D5/10; E05D5/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
144 words
A hinge comprising a pair of hinge leaves provided with interfitting knuckles, a hinge pin extending through the knuckles to connect the two leaves together, a knuckle having in one end a socket around said pin, a thrust bearing retainer fitting in said socket around the pin and having a base engaging the inner end of the socket and the pin to form a radial bearing, the retainer also having a side wall extending from its base outwardly in the socket around the pin, and a thrust bearing in said socket encircling the hinge pin in overlapping relation with the side of said retainer side wall and projecting from said socket and retainer into engagement with the adjoining knuckle, at least one of said bearings being a plastic, the thrust bearing having an end surface seating against said retainer base in sliding engagement therewith.
Claim 2
Dependent Claim
144 words
A hinge comprising a pair of hinge leaves provided with interfitting knuckles, a hinge pin extending through the knuckles to connect the two leaves together, a knuckle having in one end a socket around said pin, a thrust bearing retainer fitting in said socket around the pin and having a base engaging the inner end of the socket and the pin to form a radial bearing, the retainer also having a side wall extending from its base outwardly in the socket around the pin, and a thrust bearing in said socket encircling the hinge pin in overlapping relation with the side of said retainer side wall and projecting from said socket and retainer into engagement with the adjoining knuckle, at least one of said bearings being a plastic, the thrust bearing having an end surface seating against said retainer base in sliding engagement therewith.
Claim 3
Dependent Claim
16 words
A hinge according to claim 1, in which said thrust bearing is made of a plastic.
Claim 4
Dependent Claim
17 words
A hinge according to claim 1, in which both said thrust bearing and said retainer are plastics.
Claim 5
Dependent Claim
44 words
A hinge according to claim 1, in which said socket knuckle is provided with a recess around the pin extending inwardly from the socket, and said retainer base has an integral cylindrical extension forming a neck fitting in said recess and engaging the pin.
Claim 6
Dependent Claim
44 words
A hinge according to claim 2, in which said retainer side wall is provided with an inwardly projecting lip encircling the thrust bearing, and the thrust bearing is provided with a circumferential groove receiving the lip to lock the thrust bearing in the retainer.
Claim 7
Dependent Claim
44 words
A hinge according to claim 1, in which said retainer is made of a plastic, and the retainer side wall initially flares outwardly but is compressed radially when forced into said socket, whereby the retainer side wall presses outwardly against the socket side wall.
Claim 8
Dependent Claim
57 words
A hinge according to claim 1, in which said retainer side wall is provided with an inwardly projecting lip encircling the thrust bearing, and the diameter of the thrust bearing between said lip and the base of the retainer is greater than the inner diameter of the lip, whereby the thrust bearing and retainer are locked together.
Claim 9
Dependent Claim
31 words
A hinge according to claim 7, in which said lip has an outer surface converging toward the base of the retainer to facilitate snapping of the thrust bearing into the retainer.
Claim 10
Dependent Claim
23 words
A hinge according to claim 1, in which the outer end portion of the thrust bearing overlaps the outer end of the retainer.
Claim 11
Dependent Claim
50 words
A hinge according to claim 9, in which the inner surface of said retainer side wall converges toward the outer end of said socket, and the portion of the thrust bearing encircled by the retainer side wall diverges inwardly of the socket to hold the thrust bearing in the retainer
Claim 12
Dependent Claim
49 words
A hinge according to claim 1, in which the side wall of said bearing retainer is provided with a substantially radial lip, and the thrust bearing projects radially into the space between said lip and the base of the retainer to thereby lock the thrust bearing and retainer together.
Claim 13
Dependent Claim
37 words
A hinge according to claim 1, in which said bearing retainer is cup-like with its side wall engaging the side of said socket and spaced from the pin, and said thrust bearing is disposed in the retainer.
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |