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:
Mar. 16, 1976
Filed:
Nov. 29, 1974
Gerald R Severson, Scottsdale, AZ (US);
Motorola, Inc., Chicago, IL (US);
Abstract
A fluid pressure sensor for use internal to the human body including a completely ceramic sectioned outer shell having an opening therein for allowing fluid access to a thin metal diaphragm member. The thin metal diaphragm member is disposed between the sectioned outer shell by diffusion bonding in order to limit exposure of the human tissue solely to the diaphragm member and the ceramic shell. A variable tuned LC circuit is responsive to fluid pressure for establishing a predetermined electrical parameter. The electrical parameter is capable of affecting an electromagnetically responsive electrical circuit means located external to the human body for providing data indicative of the fluid pressure. The thin diaphragm member constitutes one plate of the LC circuit and the remainder of the LC circuit is located beneath the thin diaphragm member so as to be protected from fluid and moisture.