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:
May. 16, 1989
Filed:
May. 27, 1988
Robert L Berry, Rancho Palos Verdes, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
A motor winding assembly of mass M.sub.m is disposed for reciprocating linear movement within a housing, while a motor armature assembly of mass M.sub.a is disposed for reciprocating linear movement within the motor winding assembly. A first spring having a spring constant K.sub.m is connected between the motor winding assembly and the housing, and a second spring having a spring constant K.sub.a is connected between the motor armature assembly and the housing. The spring constants K.sub.m and K.sub.a satisfy the relation K.sub.m /K.sub.a =M.sub.m /M.sub.a, and since the motor housing assembly and the motor armature assembly move by amounts inversely proportional to their respective masses, essentially no vibration is transmitted to the housing over a wide range of motor operating frequencies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile