US3890672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frictionally adjustable hinge assembly with nonrotatable hinge pin bearing sleeve
Assignee: Individual
•
Filing: 1974-06-14
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Granted: 1975-06-24
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Expires: 1994-06-14
Abstract
Abstract A hinge assembly has a first arm 10 provided with an upstanding shaft 13 having a lower squared portion 13'' and an upper threaded portion 13''''. The shaft extends through a hole 15 in a second arm 11, receives a shouldered sleeve 16 having a squared opening which fits over the squared portion 13'', and is topped by a nut 17. The height of the central bushing portion of the sleeve is greater than the thickness of the second arm extension defining the hole 15 to implement free rotation without any torque moments tending to unscrew the nut. The sleeve may be deformable and expanded into the hole by tightening the nut to adjust the hinge friction. Abutment shoulders 20, 22 may be provided to retain the arms in a given position when frictionally engaged.
Inventors
- 👤 Nils Ture Lennart Berthagen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:10
CPC Classifications
F; F16; F16C; F16C11/00; F16C11/04; E; E05; E05D; E05D3/00; E05D3/02; F16B; F16B7/00; F16B7/18; Y; Y10; Y10T; Y10T403/00; Y10T403/32; Y10T403/32254; Y10T403/32262; Y10T403/32319; Y10T403/32606; Y10T403/32819; Y10T403/40; Y10T403/405; Y10T403/70; Y10T403/7047; Y10T403/7061
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
291 words
In a hinge assembly including two elements (10,11) mounted for pivotal movement relative to each other, a first abutment surface (12) on a first of said elements, a shaft (13) extending outwardly from and perpendicular to said abutment surface and having a non-round lower portion (13'') adjacent the first abutment surface and an upper portion, a flat web member (11'') having upper and lower bearing surfaces extending from the second of said elements and defining a cylindrical bearing hole (15) therein through which the shaft extends, a sleeve (16) having an outwardly extending flange (16'''') defining a second abutment surface (23), a central passageway (16'') having the same nonround configuration as the lower portion of the shaft, and an external cylindrical bearing surface, the sleeve being fitted over and axially slidable on the shaft with the non-round portion engaging the central passageway in a non-rotatable manner and the bearing surface accommodated within the bearing hole, and with the first and second abutment surfaces spaced from but facing each other and, respectively, facing said upper and lower bearing surfaces; of the web, and locking means (17) mounted on the upper portion of the shaft retaining the sleeve thereon, the improvements characterized by: a. the axial length of the external cylindrical bearing surface being greater than the thickness of the web, and b. the locking means engaging the upper portion of the shaft to such a depth that the end of the sleeve remote from the flange bears against the first abutment surface, whereby the shaft, sleeve and locking means assembly is rotatable in the bearing hole while having a limited end play defined by the difference between the axial length of the external cylindrical bearing surface and the thickness of the web.
Claim 2
Dependent Claim
291 words
In a hinge assembly including two elements (10,11) mounted for pivotal movement relative to each other, a first abutment surface (12) on a first of said elements, a shaft (13) extending outwardly from and perpendicular to said abutment surface and having a non-round lower portion (13'') adjacent the first abutment surface and an upper portion, a flat web member (11'') having upper and lower bearing surfaces extending from the second of said elements and defining a cylindrical bearing hole (15) therein through which the shaft extends, a sleeve (16) having an outwardly extending flange (16'''') defining a second abutment surface (23), a central passageway (16'') having the same nonround configuration as the lower portion of the shaft, and an external cylindrical bearing surface, the sleeve being fitted over and axially slidable on the shaft with the non-round portion engaging the central passageway in a non-rotatable manner and the bearing surface accommodated within the bearing hole, and with the first and second abutment surfaces spaced from but facing each other and, respectively, facing said upper and lower bearing surfaces; of the web, and locking means (17) mounted on the upper portion of the shaft retaining the sleeve thereon, the improvements characterized by: a. the axial length of the external cylindrical bearing surface being greater than the thickness of the web, and b. the locking means engaging the upper portion of the shaft to such a depth that the end of the sleeve remote from the flange bears against the first abutment surface, whereby the shaft, sleeve and locking means assembly is rotatable in the bearing hole while having a limited end play defined by the difference between the axial length of the external cylindrical bearing surface and the thickness of the web.
Claim 3
Dependent Claim
50 words
A hinge assembly according to claim 1, wherein the sleeve is manufactured at least in part from a deformable material and is arranged to be widened radially into frictional engagement with the inner wall of the bearing hole under the influence of an axially directed force from the locking means.
Claim 4
Dependent Claim
127 words
A hinge assembly according to claim 1, wherein at least one bearing surface of the second element has a raised portion and a cooperating raised portion is provided on one of the abutment surfaces facing said one bearing surface, whereby the two elements may be rotated relative to each other through an angle over which the raised portions engage with and frictionally slide on each other, and wherein the total height of the two raised portions exceeds the difference between the axial length of the external cylindrical bearing surface and the thickness of the web, thereby to lock the two hinge elements together, and wherein at least one raised portion has a longitudinal extension of such magnitude that frictional locking is obtained within a determined angular range.
Claim 5
Dependent Claim
25 words
A hinge assembly according to claim 3, wherein at least one of said raised portions has a surface having a very high coefficient of friction.
Claim 6
Dependent Claim
29 words
A hinge assembly according to claim 4, wherein the other of said raised portions has a longitudinal extension which is smaller than the longitudinal extension of said one portion.
Claim 7
Dependent Claim
21 words
A hinge assembly according to claim 3, wherein the raised portions are substantially flat and extend generally parallel to one another.
Claim 8
Dependent Claim
18 words
A hinge assembly according to claim 1, wherein the locking means comprises a nut screwed onto the shaft.
Claim 9
Dependent Claim
16 words
A hinge assembly according to claim 7, wherein the sleeve is made from a deformable material.
Claim 10
Dependent Claim
14 words
A hinge assembly according to claim 8, wherein said material is an elastic material.
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) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |