WILLIAM CARPENTER, DDS
Dentist at Parnassus Ave, San Francisco, CA
License number
California SP123
Category
Dentist
Type
Oral and Maxillofacial Pathology
Address
Address
2
513 Parnassus Ave S-512, San Francisco, CA 94143
PO Box 10076, Van Nuys, CA 91410
PO Box 10076, Van Nuys, CA 91410
Phone
(415) 476-4868
(805) 578-8300
(805) 578-8950 (Fax)
(805) 578-8300
(805) 578-8950 (Fax)
Organization information
See more information about WILLIAM CARPENTER at bizstanding.comWilliam Carpenter DDS,MS
2155 Webster St, San Francisco, CA 94115
Industry:
Dentists
Phone:
(415) 929-6660 (Phone)
William Carpenter
Professional information
Chair Height Adjustment Mechanism
US Patent:
4750701, Jun 14, 1988
Filed:
May 5, 1987
Appl. No.:
7/046407
Inventors:
Henry J. Folson - Redondo Beach CA
William M. Carpenter - Encino CA
William M. Carpenter - Encino CA
Assignee:
Illinois Tool Works, Inc. - Chicago IL
International Classification:
F16M 1100
US Classification:
2484061
Abstract:
A control assembly for adjustable displacement of a chair seat or the like comprises a lead screw threaded to a nut for relative longitudinal movement in order to adjust the height of the chair with the relative movement of the screw and nut. The control assembly also includes a rotational bearing for swiveling the seat while maintaining the desired seat height; the rotational bearing also allows backdriving, for example rotation of the screw, without rotation of the seat. The control assembly also includes a locking mechanism for selectively preventing relative movement of the screw with respect to the nut in order to maintain the desired seat height. A power spring can be provided on the assembly to drive selective elevation, for example of the screw and seat, when the screw has been unlocked.
Dr. William Carpenter, San Francisco CA - DDS (Doctor of Dental Surgery)
Specialties:
Oral & Maxillofacial Pathology
Address:
513 Parnassus Ave, San Francisco 94143
(415) 476-4868 (Phone)
(415) 476-4868 (Phone)
Languages:
English
Education:
Medical School
University of Pittsburgh / Main Campus
University of Pittsburgh / Main Campus
William McGregor Carpenter, San Francisco CA
Specialties:
Dentist
Address:
513 Parnassus Ave, San Francisco, CA 94143