The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 17, 1987
Filed:
Jul. 09, 1984
Byron A Richards, Skaneateles, NY (US);
Welch Allyn, Inc., Skaneateles Falls, NY (US);
Abstract
An ophthalmoscope having two lens discs one of which has three different lenses and the other of which has twenty-three different lenses. There is a viewing path through the instrument and, in use, one lens in each disc will always be in registry with the viewing passage. The two lens discs in combination provide sixty-nine different diopters ranging from -30 to +38 diopters. The lens discs have a common axis of rotation and are spaced apart so as to permit a cam plate to be positioned between the discs in close proximity to each. The cam plate is operable to provide an automatic lens shifting mechanism for the pair of lens discs.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile