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:
Jul. 31, 1989
Filed:
Feb. 12, 1989
Robert W Milton, Huntsville, AL (US);
The United States of America as represented by the Secretary of the Army, Washington, DC (US);
Abstract
Insulating material is used to attach a conducting foil patch to conductive urface of motor case. The patch is a part of an open electrical circuit, along with a power source, timer and connecting wires until impact which causes the patch to collapse and come in contact with the motor surface, thus closing the circuit. When the circuit is closed and voltage is present, the timer records the time of impact and continues to count. A piezo-electric pin attached to motor case and connected to the timer creates voltage pulse upon detonation of motor case and this pulse stops the timer. Thus, accurate measurements of time lapse between impact and detonation can be made.