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:
Jan. 12, 1982
Filed:
Oct. 23, 1979
August Weilbach, LaHabra, CA (US);
Charles W Ragsdale, Concord, CA (US);
Corles M Perkins, Santa Ana, CA (US);
Cavitron Corporation, New York, NY (US);
Abstract
A precisely movable mirror mount has a mirror pivotally supported on an elongated member. The member is rotationally supported by a support spaced along the member from the mirror, the support also supporting a winch. One end of a strand is windingly connected to the winch and the other end of the strand is connected to the mirror for rotating the mirror in one direction against a bias device which urges mirror rotation in the other direction. The strand mirror-rotating arrangement makes the device slim and thus visually non-distracting and the spacing to the member and winch support minimizes noise at the mirror to make the device audibly non-distracting, both of which are important to the preferred use of the device in a visual field tester in which the patient is close to the device.