JACK L JOHNSTON
Optometry at 26 Ave, Bradenton, FL
License number
Florida 630
Effective Date
Jan 1, 1901
Category
Health Care
Type
Optometrist
Address
Address
925 26Th Ave E, Bradenton, FL 34208
Professional information
Ophthalmic Instrument Stand
US Patent:
5316260, May 31, 1994
Filed:
Oct 19, 1992
Appl. No.:
7/962867
Inventors:
Jack L. Johnston - Bradenton FL
International Classification:
A47F 114
US Classification:
248648
Abstract:
A multi-jointed support arm accepting various Ophthalmic instruments and platforms is suspended by cables distributing the weight of said arm and instruments up and over two sets of pulleys and back down to a counterweight. A switch actuated electro-mechanical lock prevents accidental descent of the instrument platform support arm. Upward movement of the support arm is unrestricted. An outer shroud conceals mechanical components of this device prior to the support arm.