US3574427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivot construction
Assignee: Individual
•
Filing: 1969-04-03
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Granted: 1971-04-13
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Expires: 1989-04-03
Abstract
Abstract A pivot construction for a swivel device having a pair of platelike members in face-to-face relation relatively rotatable about the pivot axis. The novel pivot construction includes a shouldered pivot pin anchored to one of the members and spaced from the other member by low friction bodies, one of which is keyed to the other member to insure unitary movement therewith.
Inventors
- 👤 James K Faull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:12
CPC Classifications
F; F16; F16C; F16C17/00; F16C17/04; A; A47; A47C; A47C3/00; A47C3/18
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
170 words
In an antifriction swivel structure formed of a pair of platelike members in face-to-face relation and having pivot means connecting said members together for Relative pivotal movement, the improvement wherein said pivot means comprises: a pin anchored to one of said members for unitary movement therewith and having a shank portion extending through an enlarged aperture in the other of said members and terminating in a radially enlarged shoulder adjacent to but spaced from said other member; a sleeve of low-friction material disposed within said other member enlarged aperture, said sleeve having a bore for rotatably receiving said pin shank portion and also having a radially enlarged flange interposed between said pin shoulder and said other member; a washer of low-friction material interposed between said pin shoulder and said sleeve flange to reduce friction therebetween upon relative rotative movement of said members; and means in part provided by said sleeve and in part provided by said other member and interengaging to prevent relative rotation between said member and said sleeve.
Claim 2
Dependent Claim
170 words
In an antifriction swivel structure formed of a pair of platelike members in face-to-face relation and having pivot means connecting said members together for Relative pivotal movement, the improvement wherein said pivot means comprises: a pin anchored to one of said members for unitary movement therewith and having a shank portion extending through an enlarged aperture in the other of said members and terminating in a radially enlarged shoulder adjacent to but spaced from said other member; a sleeve of low-friction material disposed within said other member enlarged aperture, said sleeve having a bore for rotatably receiving said pin shank portion and also having a radially enlarged flange interposed between said pin shoulder and said other member; a washer of low-friction material interposed between said pin shoulder and said sleeve flange to reduce friction therebetween upon relative rotative movement of said members; and means in part provided by said sleeve and in part provided by said other member and interengaging to prevent relative rotation between said member and said sleeve.
Claim 3
Dependent Claim
156 words
In an antifriction swivel structure formed of a pair of platelike members in face-to-face relation and having pivot means connecting said members together for relative pivotal movement, the improvement wherein said pivot means comprises: a pin anchored to one of said members for unitary movement therewith and having a shank portion extending through an enlarged aperture in the other of said members and terminating in a radially enlarged shoulder adjacent to but spaced from said other member; a sleeve of low-friction material disposed within said other member enlarged aperture, said sleeve having a bore for rotatably receiving said pin shank portion and also having a radially enlarged flange interposed between said pin shoulder and said other member; and said sleeve having an integral projection extending both radially outwardly thereof and axially of its flange, said projection being closely receivable in a recess in said other member to prevent relative rotation between the latter and said sleeve.
Claim 4
Dependent Claim
156 words
In an antifriction swivel structure formed of a pair of platelike members in face-to-face relation and having pivot means connecting said members together for relative pivotal movement, the improvement wherein said pivot means comprises: a pin anchored to one of said members for unitary movement therewith and having a shank portion extending through an enlarged aperture in the other of said members and terminating in a radially enlarged shoulder adjacent to but spaced from said other member; a sleeve of low-friction material disposed within said other member enlarged aperture, said sleeve having a bore for rotatably receiving said pin shank portion and also having a radially enlarged flange interposed between said pin shoulder and said other member; and said sleeve having an integral projection extending both radially outwardly thereof and axially of its flange, said projection being closely receivable in a recess in said other member to prevent relative rotation between the latter and said sleeve.
Claim 5
Dependent Claim
127 words
The construction of claim 1 wherein said members are spaced apart axially of said pin: wherein a body of low-friction material is interposed between said members in encircling relation with said pin shank portion; wherein said pin shank portion abuts said one member and has a reduced diameter, axial extension passing through a close fitting aperture therein; wherein the free end of said pin shank extension is headed over said one member to anchor said pin thereto, said one member being gripped between said headed-over, pin shank extension and the portion of said pin which abuts said one member; and wherein a washer of low-friction material is interposed between said pin shoulder and said sleeve flange to reduce friction therebetween upon relative rotative movement of said members.
Claim 6
Dependent Claim
140 words
An antifriction swivel structure, comprising a pair of members having inner faces in confronting relation, a pin having a shank extending transversely of said members through openings axially through said faces to provide a pivot, the opening in one of said members being enlarged relative to said shank, and said pin having heads at its opposite ends overlying outer surfaces of respective members to hold them against lateral separation, a sleeve of low-friction material within the enlarged opening in said one member and having an internal opening of a size to closely pass the shank of said pin in bearing relation, said sleeve having a headed end interposed between the outer face of said one member and the adjoining head of said pin, and said sleeve and said one member having interengaging notch and lug means to prevent rotation therebetween.
Claim 7
Dependent Claim
140 words
An antifriction swivel structure, comprising a pair of members having inner faces in confronting relation, a pin having a shank extending transversely of said members through openings axially through said faces to provide a pivot, the opening in one of said members being enlarged relative to said shank, and said pin having heads at its opposite ends overlying outer surfaces of respective members to hold them against lateral separation, a sleeve of low-friction material within the enlarged opening in said one member and having an internal opening of a size to closely pass the shank of said pin in bearing relation, said sleeve having a headed end interposed between the outer face of said one member and the adjoining head of said pin, and said sleeve and said one member having interengaging notch and lug means to prevent rotation therebetween.
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |