US3903567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two knuckle hinges
Assignee: Stanley Works
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Filing: 1974-09-24
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Granted: 1975-09-09
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Expires: 1994-09-24
Abstract
Abstract An improved two knuckle hinge comprises a pair of adjacent hinge leaves on which long and short axially aligned hinge knuckles are formed. The long hinge knuckle houses a bushing in its end adjacent the short hinge knuckle to act as an anti-friction bearing. A torsion spring may also be housed in the portion of the long hinge knuckle unoccupied by the bushing for urging the leaves together. A pintle, about which the long hinge knuckle pivots, is supported in the short hinge knuckle and extends into and cooperates with the torsion spring, when the torsion spring is present in the long knuckle. Also disclosed is a two knuckle hinge that simulates the appearance of a three or more knuckle hinge. This is accomplished through the use of one or more markings such as grooves in the long hinge knuckle which simulate the appearance of gaps between knuckles.
Inventors
- 👤 Charles R Suska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:14
CPC Classifications
E; E05; E05F; E05F1/00; E05F1/08; E05F1/10; E05F1/12; E05F1/1207; E05F1/1215; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132; Y; Y10; Y10T; Y10T29/00; Y10T29/24
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
183 words
A two knuckle hinge comprising: a pair of adjacent hinge leaves, long and short axially aligned hinge knuckles formed respectively on the adjacent edges of said hinge leaves; an anti-friction bushing in the end of said long hinge knuckle adjacent said short hinge knuckle for providing thrust and lateral bearing surfaces for the hinge; a pintle, about which said long hinge knuckle pivots, supported in said short hinge knuckle and extending through said busing in said long hinge knuckle, a flange on said pintle positioned between said long and short hinge knuckles and in contact with said bushing for providing an anti-friction surface for said bushing and for preventing said pintle from being driven out of said hinge knuckles; and a torsion spring mechanism in said long hinge knuckle for urging said hinge leaves together, means for non-rotatably fixing one end of said torsion spring mechanism remote from said short hinge knuckle in the end of said long hinge knuckle, means for fastening said pintle to the other end of said torsion spring mechanism, and means for non-rotatably suPporting said short hinge knuckle.
Claim 2
Dependent Claim
183 words
A two knuckle hinge comprising: a pair of adjacent hinge leaves, long and short axially aligned hinge knuckles formed respectively on the adjacent edges of said hinge leaves; an anti-friction bushing in the end of said long hinge knuckle adjacent said short hinge knuckle for providing thrust and lateral bearing surfaces for the hinge; a pintle, about which said long hinge knuckle pivots, supported in said short hinge knuckle and extending through said busing in said long hinge knuckle, a flange on said pintle positioned between said long and short hinge knuckles and in contact with said bushing for providing an anti-friction surface for said bushing and for preventing said pintle from being driven out of said hinge knuckles; and a torsion spring mechanism in said long hinge knuckle for urging said hinge leaves together, means for non-rotatably fixing one end of said torsion spring mechanism remote from said short hinge knuckle in the end of said long hinge knuckle, means for fastening said pintle to the other end of said torsion spring mechanism, and means for non-rotatably suPporting said short hinge knuckle.
Claim 3
Dependent Claim
139 words
A two knuckle spring hinge comprising: a pair of adjacent hinge leaves, long and short axially aligned hinge knuckles formed respectively on the adjacent edges of said hinge leaves; an anti-friction bushing in the end of said long hinge knuckle adjacent said short hinge knuckle for providing thrust and lateral bearing surfaces for the hinge; a torsion spring mechanism in said long hinge knuckle for urging said hinge leaves together; means for non-rotatably fixing one end of said torsion spring mechanism remote from said short hinge knuckle in the end of said long hinge knuckle; and a pintle, about which said long hinge knuckle pivots, non-rotatably supported in said short hinge knuckle and extending through said bushing in said long hinge knuckle, said pintle having means for fastening said pintle to the other end of said torsion spring mechanism.
Claim 4
Dependent Claim
139 words
A two knuckle spring hinge comprising: a pair of adjacent hinge leaves, long and short axially aligned hinge knuckles formed respectively on the adjacent edges of said hinge leaves; an anti-friction bushing in the end of said long hinge knuckle adjacent said short hinge knuckle for providing thrust and lateral bearing surfaces for the hinge; a torsion spring mechanism in said long hinge knuckle for urging said hinge leaves together; means for non-rotatably fixing one end of said torsion spring mechanism remote from said short hinge knuckle in the end of said long hinge knuckle; and a pintle, about which said long hinge knuckle pivots, non-rotatably supported in said short hinge knuckle and extending through said bushing in said long hinge knuckle, said pintle having means for fastening said pintle to the other end of said torsion spring mechanism.
Claim 5
Dependent Claim
61 words
A hinge according to claim 2, wherein said long hinge knuckle further includes at least one marking simulating a gap between two hinge knuckles extending around the exterior of said long hinge knuckle at a distance from its end equal to the length of said short hinge knuckle whereby the two knuckle spring hinge simulates a three or more knuckle hinge.
Claim 6
Dependent Claim
78 words
A hinge according to claim 3, wherein said hinge leaves are equal in length to the leaf of a conventional concealed bearing hinge, the length of said short hinge knuckle is equal to the length of a short hinge knuckle of a concealed bearing hinge, and the combined length of said long and short hinge knuckles is equal to the length of said hinge leaves, whereby the two knuckle spring hinge simulates a three knuckle concealed bearing hinge.
Claim 7
Dependent Claim
52 words
A hinge according to claim 2, wherein said non-rotatably fixing means comprises a capstan in the end of said long hinge knuckle, means to non-rotatably support the capstan, said capstan being fastened to said one end of said torsion spring mechanism to non-rotatably fix said one end of said torsion spring mechanism.
Claim 8
Dependent Claim
87 words
A hinge according to claim 5, wherein said non-rotatable support means includes a first aperture extending through the long hinge knuckle, a second aperture extending into the capstan and aligned with said first aperture, and a pin extending through said first and second apertures for securing the capstan against rotation; and a recess in the end of said capstan, said recess cooperating with a tool for rotating said capstan when the pin is out of said apertures, whereby the torsion force of said spring mechanism is adjustable.
Claim 9
Dependent Claim
32 words
A hinge according to claim 6, wherein said capstan includes a plurality of circumferentially spaced second apertures capable of receiving said pin, whereby finer torsional adjustment of said spring mechanism is possible.
Claim 10
Dependent Claim
59 words
A hinge according to claim 2, wherein said long hinge knuckle includes an internal shoulder at the end of said long hinge knuckle adjacent said short hinge knuckle, said shoulder defining an aperture having a first diameter; and wherein said torsion spring mechanism has a second diameter larger than said first diameter, whereby disassembly of said hinge is prevented.
Claim 11
Dependent Claim
15 words
A hinge according to claim 2, wherein said torsion spring mechanism is a coil spring.
Claim 12
Dependent Claim
28 words
A hinge according to claim 2, wherein said bushing includes a flange interposed between said long and short hinge knuckles acting as a thrust bearing for the hinge.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |