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:
Aug. 20, 1985
Filed:
Sep. 30, 1982
Applicant:
Inventors:
Todd J Polk, Holland, PA (US);
James F Morrin, Philadelphia, PA (US);
Assignee:
Cabot Medical Corporation, Langhorne, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61H / ;
U.S. Cl.
CPC ...
128 / ; 128343 ;
Abstract
An ultrasonic friction reducing device is comprised of an ultrasonic generator having a special sweep frequency oscillator, a piezoelectric crystal transducer and a cervical dilator probe. The generator produces an oscillatory electric current for the operation of the device. The piezoelectric crystal transducer converts the oscillatory electric current produced by the generator into a vibratory mechanical motion. The transducer, through mechanical coupling, transmits the ultrasonic energy into the friction reducing probe.