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:
Nov. 23, 1993
Filed:
Oct. 16, 1991
Joseph C Gundlach, Oak Ridge, TN (US);
Acraloc Corporation, Oak Ridge, TN (US);
Abstract
A two-hand controller for preventing trigger tie-down (10) for preventing the tie-down of an activation control switch (36,38) on equipment provided with two activation control switches (36,38). The two-hand controller for preventing trigger tie-down (10) includes a power supply (20) for supplying low voltage power to the two-hand controller (10). A comparator (18) is provided for comparing a signal (166) associated with the operation of the activation controls. An optocoupler (164) is included for receiving an optical signal (168) and activating a pilot relay (118). A constant current circuit (24) is provided for regulating the magnitude of current. A logic circuit (16) is provided for processing the signals (74,76) delivered by the activation controls (36,38) for determining when the activation controls (36,38) have been activated within a selected period of time. An inverter (46) is provided to process the output of the logic circuit (16). A diode array (26) is provided for insuring a positive voltage supply to a voltage regulator (28).