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. 11, 1992
Filed:
Feb. 09, 1990
Applicant:
Inventor:
Dean DeVolpi, Lisle, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01C / ;
U.S. Cl.
CPC ...
338128 ; 7447 / ;
Abstract
A joy stick has a handle attached to a ball-shape member which is formed with a groove below its largest diameter into which an electrical conductive spring is mounted. The ball is mounted in a spherical cavity upon which are formed resistive paths which are engageable by the spring on the ball. The ball is moveable such that the spring can vary the resistance on the resistive paths so as to provide electrical signals which indicated any time the position of the ball relative to the socket.