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US5352311: Method of manufacturing a composite sail batten

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Filing Information

Inventor(s) Peter A. Quigley ·
Assignee(s) Composite Development Corporation ·
Attorney/Agent(s) Lahive & Cockfield ·
Primary Examiner Jeff H. Aftergut ·
Application Number US7907866
Filing date 07/02/1992
Issue date 10/04/1994
Predicted expiration date 07/02/2012
U.S. Classifications 156/180  · 156/242  ·
International Classifications B63H 908  ·
Kind CodeA
International Classifications 156166;180;245;242;196;221;198 ·
11 Claims, No Drawings


Abstract

A sail batten formed of a fiber reinforced composite material extended longitudinally and varying in transverse cross sectional from an ellipse at one end to a flattened ellipse at the other end. A two step processing for fabrications the batten commences with fabrication of a tube of substantially constant cross section in the thermoplastic condition as a first step. The second step processing heats the tube to a malleable condition and squishes one end of the tube to form a tapered structure with one cross sectional dimension decreased to reduce stiffness in that dimension.

Independent Claims | See all claims (11)

  1. 1. A method of manufacture of a sail batten comprising the steps of(a) fabricating an initial batten structure of thermoplastic fiber reinforced composite material elongated along a first axis, and(b) heating at least one longitudinal portion of said fabricated structure to a plastic condition and flattening said portion in its plastic condition to selectively decrease stiffness in a direction generally transverse to said first axis along said first axis for attaining a selected sail-configuring stiffness,thereby to form said initial structure into a batten having a predetermined variation, along said first axis, in stiffness in said transverse direction.
  2. 6. A method of manufacture of a sail batten comprising the steps of(a) fabricating a structure of thermoplastic fiber reinforced composite material elongated along a first axis, and(b) heating at least one longitudinal portion of said fabricated structure to a plastic condition and flattening said portion in its plastic condition to selectively decrease stiffness in a direction generally transverse to said first axis along said first axis,whereby said batten has a predetermined variation in stiffness in said transverse direction along said first axis, andwherein the variation in stiffness along the first axis is such that under compression the position of maximum deflection of said batten, with respect to the stiffest end of said batten, expressed as a percentage of a length defined as a straight line between the two ends of said batten, is between about 50% and 80%.
  3. 8. A method of manufacture of a sail batten comprising the steps of(a) fabricating an initial batten structure of thermoset polymer elongated along a first axis,(b) curing said thermoset polymer to a condition wherein it can be heated to a plastic condition, and(c) thereafter heating a longitudinal portion of said fabricated structure to a plastic condition and flattening said portion in its plastic condition to selectively decrease stiffness in a direction generally transverse to said first axis along said first axis for attaining a selected sail-configuring stiffness,thereby to form said initial batten structure into a batten having a predetermined variation, along said first axis, in stiffness in said transverse direction.
  4. 10. A method of manufacture of a sail batten comprising the steps of(a) fabricating a structure of thermoplastic fiber reinforced composite material elongated along a first axis,(b) determining a selected variation, along said first axis, of stiffness of said structure generally transverse to said first axis for allowing a selected sail-configuring deflection of said structure, and(c) heating at least one longitudinal portion of said fabricated structure to a plastic condition and flattening said portion in its plastic condition according to said determined stiffness variation,thereby to form said structure into a sail batten having a predetermined variation, along said first axis, in stiffness in said transverse direction.
  5. 11.11. A method of manufacture of a sail batten comprising the steps of(a) fabricating a structure of thermoset polymer elongated along a first axis,(b) curing said thermoset polymer to a condition wherein it can be heated to a plastic condition,(c) determining a selected variation along said first axis, of stiffness of said structure generally transverse to said first axis for allowing a selected sail-configuring deflection of said structure, and(d) heating a longitudinal portion of said fabricated structure to a plastic condition and flattening said portion in its plastic condition according to said determined stiffness variation,thereby to form said structure into a sail batten having a predetermined variation, along said first axis, in stiffness in said transverse direction.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3581698 JOHN U BETE Bete Jun 1971
US3654028 WILLIAM B GOLDSWORTHY Goldsworthy Apr 1972
US4023801 Exxon Research and Engineering Company Van Auken May 1977
US4058581 Exxon Research & Engineering Co. Park Nov 1977
US4136630 FRASER IAN K Fraser Jan 1979
US4268561 THOMPSON JAMES D Thompson et al. May 1981
US4292368 Societe Nationale Industrielle Aerospatiale Mialon Sep 1981
US4487146 PARMENTIER JAN ANTON Parmentier Dec 1984
US4633798 SKINNER A HOMER Skinner et al. Jan 1987
US4752513 PPG Industries, Inc. Rau et al. Jun 1988
US4838192 STEVENSON WILLIAM H IV Stevenson, IV et al. Jun 1989
US5012755 Neil Pryde Limited Lockhart et al. May 1991
US5026447 Phillips Petroleum Company O'Connor Jun 1991
US5056449 HOWLETT IAN C Howlett Oct 1991
US5217555 Lockheed Corporation Franklin, III et al. Jun 1993

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
EP233129Aug 1987
JP62157892Jul 1987
GB965204CARLTON TYRE SAVING COMPANY LTJul 1964

Other Publications

Harken Sailmaker Products Brochure/Article, p. 4-2.
Radco Marine Products Brochure, Apr. 1991, pp. 1-9.
Robichaud Batten Systems, Inc. Brochure.
Challenge Sailcloth Hardware Brochure.
Radical Advanced Technology (RATBattens) Brochure & Price List, Feb. 1992.
Apex proto Composites, Inc., 1991 (write-up).
"Which End First;" Deborah Bennet; Sailing World, pp. 46-49, Sep. 1992.

Patent Family