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:
Jun. 13, 2000
Filed:
Mar. 11, 1998
Applicant:
Inventor:
Bin-Juine Huang, Taipei, TW;
Assignee:
National Science Council, Taipei, TW;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ;
U.S. Cl.
CPC ...
417214 ; 417212 ; 318127 ;
Abstract
A controller is provided to control and fix the stroke and frequency of the piston movement of the compressor under various operating conditions. The controller includes a signal generator for providing a first signal, a detector generating a second signal after detecting that the piston has a displacement, and a signal processing unit electrically connected to the signal generator and the detector for outputting a control signal to the compressor after receiving the first signal and the second signal to control a movement of the piston.