US3757514A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal link chain
Assignee: Ferag AG
•
Filing: 1972-04-24
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Granted: 1973-09-11
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Expires: 1992-04-24
Abstract
Abstract A universal or ball pivot-link chain composed of chain link elements, each such link element possessing at one end a swivel or ball pivot body mounted at the other end of the directly neighboring chain link element. The swivel or ball pivot body comprises two concentric spherical bearing surfaces possessing different radii of curvature, the bearing surface with the smaller radius of curvature being located forwardly of the bearing surface with the largest radius of curvature in the direction of such neighboring link element.
Inventors
- 👤 W Reist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:31
CPC Classifications
F; F16; F16G; F16G13/00; F16G13/02; F16G13/10; B; B65; B65G; B65G17/00; B65G17/30; B65G17/38; B65G17/385; B65G2201/00; B65G2201/02; Y; Y10; Y10S; Y10S59/00; Y10S59/90; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20402; Y10T74/20456
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
A universal link chain arrangement comprising a plurality of chain link elements, each of said chain link elements possessing at one end a swivel body mounted at the other end of the directly neighboring chain link element, said swivel body possessing two concentric spherical bearing surfaces having different radii of curvature, the bearing surface having the smaller radius of curvature being arranged forwardly of the bearing surface having the larger radius of curvature in the direction of such neighboring chain link element.
Claim 2
Dependent Claim
82 words
A universal link chain arrangement comprising a plurality of chain link elements, each of said chain link elements possessing at one end a swivel body mounted at the other end of the directly neighboring chain link element, said swivel body possessing two concentric spherical bearing surfaces having different radii of curvature, the bearing surface having the smaller radius of curvature being arranged forwardly of the bearing surface having the larger radius of curvature in the direction of such neighboring chain link element.
Claim 3
Dependent Claim
63 words
The link chain arrangement as defined in claim 1, wherein the chain link elements are all essentially of the same shape, a counter bearing portion for each chain link element provided at the other end thereof and capable of receiving the swivel body of the neighboring chain link element, said counter bearing portion including means for enabling elastically widening such counter bearing portion.
Claim 4
Dependent Claim
21 words
The link chain arrangement as defined in claim 2, wherein each of the chain link elements is formed of one piece.
Claim 5
Dependent Claim
20 words
The link chain arrangement as defined in claim 1, wherein both spherical bearing surfaces of the swivel body are convex.
Claim 6
Dependent Claim
35 words
The link chain arrangement as defined in claim 1, wherein the spherical bearing surface having the larger radius of curvature is convex and the spherical bearing surface having the smaller radius of curvature is concave.
Claim 7
Dependent Claim
31 words
The link chain arrangement as defined in claim 2, wherein said counter bearing portion is provided at least at two diametrically opposite locations with lengthwise extending slots defining said enabling means.
Claim 8
Dependent Claim
25 words
The link chain arrangement as defined in claim 1, wherein each chain link element is enclosed by a component at the location of largest diameter.
Claim 9
Dependent Claim
16 words
The link chain arrangement as defined in claim 7, wherein said component is formed of plastic.
Claim 10
Dependent Claim
19 words
The link chain arrangement as defined in claim 7, wherein said component is formed of a self-lubricating bearing material.
Claim 11
Dependent Claim
65 words
The link chain arrangement as defined in claim 1, further including a counter bearing portion at the other end of each chain link element and composed of a number of parts which enclose a hollow space intended to receive the swivel body of the neighboring chain link element, this hollow space being delimited by counter bearing surfaces for the bearing surfaces of the swivel body.
Claim 12
Dependent Claim
27 words
The link chain arrangement as defined in claim 1, further including a hollow guide tube within which travels at least a portion of the link chain arrangement.
Claim 13
Dependent Claim
43 words
The link chain arrangement as defined in claim 11, wherein said guide tube is slotted in lengthwise direction, and entrainment means secured to at least a portion of the link chain arrangement, said entrainment means extending towards the outside of said guide tube.
References Cited (Backward Citations)
US1058260A
Cited
US1327927A
Cited
US1695263A
Cited
US1947113A
Cited
US3066501A
Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |