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:
Nov. 21, 2000
Filed:
Jan. 21, 1999
Alexander H Slocum, Bow, NH (US);
Aesop, Inc., Concord, NH (US);
Abstract
A system and method of preloading linear motion bearings arranged to move between two orthogonal surfaces of each of a rail and an overlapping carriage, wherein a permanent magnet linear electric motor with a high attractive force between the coils and the magnets is inclined at an acute angle to the surfaces, such that the attractive force creates a preload force on each of the bearings; the magnet being fixed as a track in a trough along the rail, and the coils being recessed in a groove in the inner top surface of the carriage, both oriented at said acute angle, and providing through such preloading, a high degree of stiffness and load capacity in all degrees of freedom of the carriage except in the linear direction of movement along the rail.