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:
Feb. 29, 2000
Filed:
Nov. 28, 1997
David V Adams, San Carlos, CA (US);
Thomas G Cooper, Menlo Park, CA (US);
Alan W Petersen, Cupertino, CA (US);
Karl Konecny, Hillsboro, OR (US);
Acuson Corporation, Mountain View, CA (US);
Abstract
A control device for converting a manual input into an electrical signal is provided. The control device includes a control button, a first magnet having a first predetermined polarity, a second magnet having a second predetermined polarity, and a hall-effect sensor located adjacent to the control button. The control button is mounted for pivotal displacement about a neutral position in accordance with the manual input. The first magnet and the second magnet are mounted to the control button. The polarity of the second magnet is opposite the polarity of the first magnet. The hall-effect sensor has an electrical input and an electrical output. The electrical signal produced by the control device may, for example, be used to control the velocity of a motor, which rotates an ultrasound transducer.