US4425820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connecting rod of a composite material and method for manufacturing the same
Assignee: SIGRI ELEKTROGRAPHIT GmbH
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Filing: 1981-02-03
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Granted: 1984-01-17
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Expires: 2001-02-03
Abstract
Abstract Connecting rod of a composite material formed from reinforcement fibers wound in the form of an endless loop with constant cross-sectional shape and the fiber bundle enclosed by a jacket of aluminum.
Inventors
- 👤 Adolf Swozil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:19
CPC Classifications
F; F16; F16C; F16C7/00; F16C7/02; F16C7/026; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2142; Y10T74/2162
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
110 words
Connecting rod of composite material formed from reinforcement fiber wound in the form of an endless loop with constant cross-sectional area and varying cross-sectional shape, said endless loop of reinforcement fibers enclosed by a jacket of aluminum, said connecting rod comprising a connecting rod eye, a connecting rod shank and an arc curved part of a connecting rod head in the form of a double loop of reinforcement fibers which has cutouts in the vicinity of the connecting rod head, and wherein said arc curved part is adapted to match a corresponding arc curved part and form a circle with both curved parts forming the circle connected by expansion bolts.
Claim 2
Dependent Claim
110 words
Connecting rod of composite material formed from reinforcement fiber wound in the form of an endless loop with constant cross-sectional area and varying cross-sectional shape, said endless loop of reinforcement fibers enclosed by a jacket of aluminum, said connecting rod comprising a connecting rod eye, a connecting rod shank and an arc curved part of a connecting rod head in the form of a double loop of reinforcement fibers which has cutouts in the vicinity of the connecting rod head, and wherein said arc curved part is adapted to match a corresponding arc curved part and form a circle with both curved parts forming the circle connected by expansion bolts.
Claim 3
Dependent Claim
14 words
Connecting rod according to claim 1, wherein carbon fibers are used as reinforcement fibers.
Claim 4
Dependent Claim
39 words
Connecting rod according to claim 1, wherein said wound reinforcement fibers are glass fibers to form an inner layer of glass fibers and thereafter said wound reinforcement fibers are carbon fibers to form an outer layer of carbon fibers.
Claim 5
Dependent Claim
23 words
Connecting rod according to claim 1, wherein the aluminum jacket has a wall thickness which varies over the length of the connecting rod.
Claim 6
Dependent Claim
21 words
Connecting rod according to claim 1, wherein the aluminum jacket consists of two parts which are connected to each other liquid-tight.
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) | 1987-01-16 | 1987-07-18 | 1988-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-16 | 1991-07-18 | 1992-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-16 | 1995-07-18 | 1996-01-17 | $7700.00 | Window Closed / Lapsed |