Patent US1920925A successfully refreshed from Google Patents.
Patent US3744123A successfully refreshed from Google Patents.
US3744123A
Expired / Lapsed
US
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Method of assembling a resilient tube with a rigid body
Assignee: ZF Friedrichshafen AG
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Filing: 1971-05-11
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Granted: 1973-07-10
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Expires: 1991-05-11
Abstract
Abstract Resilient bellows sealingly connect a protective cup on the piston rod of a telescopic shock absorber to the cylinder of the shock absorber. The bellows are secured to the cup and the cylinder by fastening rings. Each ring is an annular channel whose web holds the bellows against the cup or the cylinder under a pressure produced by axially compressing the flanges.
Inventors
- 👤 R Vers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:33
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/32; F16F9/38; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49925; Y10T29/49934; Y10T29/49938; Y10T29/49947; Y10T29/49959; Y10T29/49961
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
208 words
A method of sealing a first tubular body having an annular wall of deformable material to a second body of more rigid material than said wall, said wall having an inner face bounding a bore in said first body and an outer face, said second body having a surface of annular cross section which method comprises: a. engaging respective annular portions of one of said faces and of said surface; b. enveloping an annular portion of the other face with a loosely fitting fastening ring so that said annular portions and said fastening ring extend in a common plane, 1. said fastening ring extending in a closed loop in said plane and being a channel of approximately uniform cross section at right angles to said plane, 2. said channel having a web portion directed toward said other face, said one face, and said surface, and two flange portions bounding the open side of said channel and being directed away from said other face; and c. compressing said fastening ring transversely of said plane until said flange portions approach each other and said web portion engages said other face with a pressure sufficient to hold the engaged portion of said wall under compressive stress in cooperation with said surface.
Claim 2
Independent Claim
208 words
A method of sealing a first tubular body having an annular wall of deformable material to a second body of more rigid material than said wall, said wall having an inner face bounding a bore in said first body and an outer face, said second body having a surface of annular cross section which method comprises: a. engaging respective annular portions of one of said faces and of said surface; b. enveloping an annular portion of the other face with a loosely fitting fastening ring so that said annular portions and said fastening ring extend in a common plane, 1. said fastening ring extending in a closed loop in said plane and being a channel of approximately uniform cross section at right angles to said plane, 2. said channel having a web portion directed toward said other face, said one face, and said surface, and two flange portions bounding the open side of said channel and being directed away from said other face; and c. compressing said fastening ring transversely of said plane until said flange portions approach each other and said web portion engages said other face with a pressure sufficient to hold the engaged portion of said wall under compressive stress in cooperation with said surface.
Claim 3
Dependent Claim
17 words
A method as set forth in claim 1, wherein said first body essentially consists of elastomeric material.
Claim 4
Dependent Claim
81 words
said channel having a web portion directed toward said other face, said one face, and said surface, and two flange portions bounding the open side of said channel and being directed away from said other face; and c. compressing said fastening ring transversely of said plane until said flange portions approach each other and said web portion engages said other face with a pressure sufficient to hold the engaged portion of said wall under compressive stress in cooperation with said surface.
Claim 5
Dependent Claim
81 words
said channel having a web portion directed toward said other face, said one face, and said surface, and two flange portions bounding the open side of said channel and being directed away from said other face; and c. compressing said fastening ring transversely of said plane until said flange portions approach each other and said web portion engages said other face with a pressure sufficient to hold the engaged portion of said wall under compressive stress in cooperation with said surface.
Claim 6
Dependent Claim
50 words
A method as set forth in claim 1, wherein said flange portions bound the open side of said channel, said ring having an axis, said open side being directed radially away from said web portion and said other face, and said flange portions approaching each other axially during said compressing.
Claim 7
Dependent Claim
22 words
A method as set forth in claim 3, wherein said flange portions extend from said web portion in a radially inward direction.
Claim 8
Dependent Claim
22 words
A method as set forth in claim 3, wherein said flange portions extend from said web portion in a radially outward direction.
References Cited (Backward Citations)
US2630964A
Cited
US3035614A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |