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:
Apr. 19, 1988
Filed:
Nov. 10, 1986
Michael G Grisham, New York, NY (US);
American Telephone and Telegraph Company, AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
A manipulandum contained in a portable housing unit adapted for grasping by hand and situated at one end thereof within an area reachable by the thumb without rearranging the grasp. In one preferred embodiment, the manipulandum is a joystick extending a short distance from the surface of the housing, with its center of neutral position being essentially perpendicular to the center line of the elongated segment in the neighborhood of the joystick. The joystick has a fixed number of positions, with each position being contained within a preselected solid angle. An additional control dimension is realized by moving the joystick along its axis, against a resilient spring, so as to activate or make contact with an electrical switch.