US3850722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Component for transmitting forces
Assignee: MAN AG
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Filing: 1972-09-18
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Granted: 1974-11-26
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Expires: 1992-09-18
Abstract
Abstract A component for transmitting and sustaining axial tension and/or compression and/or torque forces, which component has a tubular mid-section portion of a fiber reinforced compound plastic, and an end fitting at either extremity thereof. An inner member of the end fitting is placed at either end of a shape imparting core having a longitudinally extending centerline. A fiber which is first passed through a plastic or resin bath is wound upon one inner member along the core and then onto the other inner member whereupon the direction is reversed until a desired number of layers and wall thickness is obtained. The fiber is wound at a predetermined angle with respect to the centerline in each layer. An outer member is then clamped over the inner member and a portion of the fiber layer to complete the end fitting and the formed component is hardened or cured to provide a fiber reinforced tubular mid-section portion having the extremities securely bonded to the end fittings.
Inventors
- 👤 H Kreft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:06
CPC Classifications
F; F16; F16C; F16C7/00; F16C7/02; F16C7/026; B; B29; B29C; B29C70/00; B29C70/68; B29C70/86; F16C3/00; F16C3/02; F16C3/026; F16D; F16D3/00; F16D3/50; F16D3/72; F16D3/725
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
153 words
A METHOD OF MANUFACTURING A COMPONENT FOR TRANSMITTING FORCES COMPRISING PLACING AN INNER MEMBER OF END FITTING AT THE END PORTIONS OF A LONGITUDINALLY EXTENDING SELF-SUPPORTING CORE MEMBER MADE FROM PLASTIC OR AERATED PLASTIC MATERIAL, WINDING A FIBER COATED WITH AN UNHARDENED PLASTIC ABOUT THE CORE MEMBER BEYOND THE LENGTH THEREOF AND ABOUT EACH INNER MEMBER OF EACH END FITTING, PLACING AN OUTER MEMBER OF THE END FITTING ONTO THE MEMBER OF THE END FITTING AND THE PORTION OF THE PLASTIC COATED FIBER WOUND N THE INNER MEMBER SUCH THAT THE WOUND FIBER PORTION IS DISPOSED BETWEEN A ORTION OF THE INNER AND OUTER MEMBERS OF THE END FITTING, AND HARDENING THE PLASTIC COATED FIBER TO BOND THE WOUND FIBER PORTION TO THE INNER AND OUTER MEMBERS OF THE END FITTINGS AND TO SAID CORE MEMBER, WHEREBY SAID COMPONENT HAVING A FIBER MID-SECTION PORTION AND AN END FITTING AT EACH END IS FORMED.
Claim 2
Independent Claim
153 words
A METHOD OF MANUFACTURING A COMPONENT FOR TRANSMITTING FORCES COMPRISING PLACING AN INNER MEMBER OF END FITTING AT THE END PORTIONS OF A LONGITUDINALLY EXTENDING SELF-SUPPORTING CORE MEMBER MADE FROM PLASTIC OR AERATED PLASTIC MATERIAL, WINDING A FIBER COATED WITH AN UNHARDENED PLASTIC ABOUT THE CORE MEMBER BEYOND THE LENGTH THEREOF AND ABOUT EACH INNER MEMBER OF EACH END FITTING, PLACING AN OUTER MEMBER OF THE END FITTING ONTO THE MEMBER OF THE END FITTING AND THE PORTION OF THE PLASTIC COATED FIBER WOUND N THE INNER MEMBER SUCH THAT THE WOUND FIBER PORTION IS DISPOSED BETWEEN A ORTION OF THE INNER AND OUTER MEMBERS OF THE END FITTING, AND HARDENING THE PLASTIC COATED FIBER TO BOND THE WOUND FIBER PORTION TO THE INNER AND OUTER MEMBERS OF THE END FITTINGS AND TO SAID CORE MEMBER, WHEREBY SAID COMPONENT HAVING A FIBER MID-SECTION PORTION AND AN END FITTING AT EACH END IS FORMED.
Claim 3
Dependent Claim
13 words
A method according to claim 1, wherein the fiber is made from carbon.
Claim 4
Dependent Claim
13 words
A method according to claim 1, wherein the fiber is made from boron.
Claim 5
Dependent Claim
41 words
A method according to claim 1, wherein said core member is made from an aerated plastic, the plastic coating said fiber penetrating the aerated core member when the fiber is applied thereto thereby forming an adhesive bond with the core member.
Claim 6
Dependent Claim
13 words
A method according to claim 4, wherein the fiber is made from carbon.
Claim 7
Dependent Claim
17 words
A method according to claim 5, wherein the plastic coating on the fibers is an epoxy resin.
Claim 8
Dependent Claim
19 words
A method according to claim 6, wherein the carbon fiber has a diameter of about 8 to 12 microns.
Claim 9
Dependent Claim
18 words
A method according to claim 4, wherein the fiber has a diameter of about 5 to 12 microns.
Claim 10
Dependent Claim
25 words
A method according to claim 4, wherein the core member is made from an aerated plastic selected from the group consisting of polyurethane and polyacrylate.
Claim 11
Dependent Claim
22 words
A method according to claim 4, wherein the fiber is wound to a thickness of about 10 to 50 layers of fiber.
Claim 12
Dependent Claim
23 words
A method according to claim 4, wherein the fiber is wound in a direction parallel to the longitudinal centerline of the core member.
Claim 13
Dependent Claim
23 words
A method according to claim 4, wherein the fiber is wound in a direction Parallel to the longitudinal centerline of the core member.
Claim 14
Dependent Claim
22 words
A method according to claim 1, wherein the fiber is wound to a thickness of about 10 to 50 layers of fiber.
Claim 15
Dependent Claim
18 words
A method according to claim 1, wherein the end fittings are radially coextensive with the fiber mid-section portion.
Claim 16
Dependent Claim
65 words
A method according to claim 14, wherein the end fitting defines a dish-shaped opening between the inner member and outer member for receiving the associated end of the fiber mid-section portion, the dish-shaped opening so shaped that the tangent of the dish-shaped opening at the point where the fiber mid-section portion meets the end fitting is substantially parallel to the longitudinal centerline of the component.
Claim 17
Dependent Claim
46 words
A method according to claim 1, wherein the inner member has a dish-like contoured surface portion in the area upon which the fiber is wound, the fiber being wound upon the dish-like contoured surface and forming tapered extremities for the mid-section portion of the formed component.
Claim 18
Dependent Claim
33 words
A method according to claim 15, wherein the fiber is passed through a plastic coating bath for coating the fiber with an unhardened plastic prior to winding upon the core and end fitting.
Claim 19
Dependent Claim
22 words
A method according to claim 1, further comprising the step of clamping the wound fiber portion between the inner and outer members.
Claim 20
Dependent Claim
34 words
A method according to claim 1, wherein the core member is substantially cylindrical and has a centrally disposed longitudinally extending centerline such that the hardened plastic coated wound fibers form a tubular mid-section portion.
Claim 21
Dependent Claim
25 words
A method according to claim 19, comprising the step of winding the fiber at angle with respect to the centerline of between 30* and 60*.
Claim 22
Dependent Claim
21 words
A method according to claim 20, wherein the fiber is wound at an angle of 45* with respect to the centerline.
Claim 23
Dependent Claim
23 words
A method according to claim 20, comprising the step of winding the fiber to form a plurality of longitudinally extending layers of fiber.
Claim 24
Dependent Claim
20 words
A method according to claim 22, comprising the step of winding each layer of fiber codirectionally to the adjacent layer.
Claim 25
Dependent Claim
20 words
A method according to claim 22, comprising the step of winding each layer of fiber counterdirectionally to the adjacent layer.
Claim 26
Dependent Claim
53 words
A method according to claim 19, comprising the step of winding the fiber to form a plurality of longitudinally extending layers of fiber, including winding the fiber of at least one layer at right angles to the centerline and winding the fiber of at least one other layer in parallel to the centerline.
Claim 27
Dependent Claim
18 words
A method according to claim 19, comprising the step of winding the fiber in parallel to the centerline.
Claim 28
Dependent Claim
18 words
A method according to claim 1, wherein the fiber is one of a carbon, boron or glass fiber.
Claim 29
Dependent Claim
40 words
A method according to claim 1, wherein th core member is formed of one of a light weight plastic and an aerated plastic, and retaining the core member within the formed component without utilizing the core member for transmitting forces.
Claim 30
Dependent Claim
55 words
A method according to claim 1, wherein the step of winding the fiber includes starting winding at the contoured surface of the inner member of one end fitting and winding in the longitudinal direction of the core along the core member and onto the contoured surface of the inner member of the other end fitting.
Claim 31
Dependent Claim
60 words
A method according to claim 29, wherein the step of winding includes continuing winding of the fiber in the reverse direction from the inner member of the other end back along the core member and onto the inner member of the one end fitting, and continuing to reverse the direction of winding until the desired number of layers is completed.
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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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |