Robert Henry Carey

US Patent:

47386568, Apr 19, 1988

Filed:

Apr 9, 1986

Appl. No.:

6/849911

Inventors:

Alireza Piramoon - Santa Clara CA
Robert Carey - Portola Valley CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

B04B 708

US Classification:

494 81

Abstract:

A composite material rotor is disclosed which is made from a plurality of stacked and bonded epoxied filament wound discs, each disc providing a specially wound construction so that the modulus of the rotor body may be varied in proportion to the maximum stress encountered by the rotor during ultracentrifugation. Such a layered disc assembly allows the rotor to be fine-tuned to respond to a variety of stress encountered during ultracentrifugation. Where upper hoop stress is greater, upper disc 28 might be wound using a higher modulus filament fiber than the fiber used by disc 26.

US Patent:

43584209, Nov 9, 1982

Filed:

May 26, 1981

Appl. No.:

6/267188

Inventors:

Steven T. Nielsen - Sunnyvale CA
Robert S. Carey - Portola Valley CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

B29C 1707

US Classification:

264538

Abstract:

A method for making a thin wall centrifuge tube using an injection blow molded process to achieve not only uniform thickness of the tube, but also uniform or homogeneous material properties throughout the tube structure. The unique application of this process includes the making of a preform mold which retains its molten stage on a transferrable core pin that is received at a second stage, where the final configuration mold is placed around the core pin. The blow molding stage operates in conjunction with the molten preform to create the high strength centrifuge tube with uniform material properties.

US Patent:

44682697, Aug 28, 1984

Filed:

Mar 28, 1973

Appl. No.:

5/345782

Inventors:

Robert S. Carey - Menlo Park CA

Assignee:

Beckman Instruments, Inc. - Fullerton CA

International Classification:

B65N 8100

US Classification:

156175

Abstract:

An ultracentrifuge rotor comprising a body portion formed as a bowl with a central open chamber defined by a thin, cylindrical wall extending from a supporting base and a plurality of nested rings of filament windings surrounding the cylindrical wall for strengthening and stiffening same. The nested rings result in a uniform filament density throughout the ring assembly.