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:
Jul. 08, 2003
Filed:
Jul. 06, 2001
Applicant:
Inventors:
Tom Thang Ung, Sunnyvale, CA (US);
Robert Alexander Lipsett, San Jose, CA (US);
Assignee:
Danaher Motion Technology, LLC, Mayfield Heights, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 2/520 ;
U.S. Cl.
CPC ...
F16H 2/520 ;
Abstract
A contamination resistant lead screw or ball screw-driven linear actuator has the lead screw and drive nut enclosed within a specially constructed guide chassis. A carriage is slidably mounted on parallel rails attached to the guide chassis. The carriage is attached to the drive nut through a slot in the guide chassis. An enclosure surrounds the guide chassis. The enclosure and the guide chassis create a labyrinth seal that effectively contains internally generated debris and contamination and excludes environmental dirt, debris and contamination.