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:
Jan. 26, 1982
Filed:
Feb. 11, 1980
Applicant:
Inventors:
Guido Busacca, Palermo, IT;
Vincenzo Meli, Palermo, IT;
Arcangelo Passaglia, Palermo, IT;
Michele Sanfilippo, Palermo, IT;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01P / ; H03B / ; H03B / ;
U.S. Cl.
CPC ...
331 90 ; 315 3961 ; 331178 ; 333226 ;
Abstract
A resonant cavity of a microwave generator, such as a magnetron oscillator, is provided with a tuning piston which is rectilinearly displaceable between two terminal positions, corresponding to respective limiting frequencies, by means of a rotating crankshaft whose eccentric portion constitutes the inner race of a ball or roller bearing. The outer race of that bearing rolls, directly or through the intermediary of a captive spherical or cylindrical coupling member, on a transverse face of the tuning piston held in contact therewith by spring pressure.