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:
Sep. 25, 1990
Filed:
Mar. 31, 1989
Hidemasa Suzuki, Furukawa, JP;
Ichiro Tokunaga, Furukawa, JP;
Hiraku Abe, Miyagi, JP;
Yasuaki Ogawa, Furukawa, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A magnetic rotary encoder device wherein fluctuation of a magnetic gap arising from a change in temperature is minimized, a printed circuit board on which an electric circuit electrically connected to a magnetic sensor is carried can be assembled readily, and a magnetic gap can be adjusted readily. The magnetic encoder device comprises a magnetic scale having thereon a magnetic code which can be detected by a magnetic sensor, a retaining member for securely retaining the magnetic sensor on a sensor mounting element with a magnetic gap left between the magnetic scale and the magnetic sensor, and a supporting member to which the retaining member is secured. A first bonding agent and a second, softer bonding agent secure the supporting member and portions of the sensor mounting element adjacent and remote from the supporting member to each other, respectively.