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. 11, 1977
Filed:
Dec. 02, 1974
Applicant:
Inventor:
Harmen Broersma, Amsterdam-N., NL;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04R / ; H04R / ;
U.S. Cl.
CPC ...
179180 ; 24594 ;
Abstract
A transducer and method of making same, according to which an electro-mechanical motor is mounted in a housing. A partition divides the housing into a first and second chamber. The partition is provided with a passage through which a linkage pin extends connecting the motor comprising an armature arranged in the first chamber with a vibration diaphragm mounted in the second chamber. The diaphragm divides off the second chamber, a further chamber contiguous to the partition.