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. 08, 2011
Filed:
Feb. 24, 2009
Applicant:
Kenji Imase, Aichi, JP;
Inventor:
Kenji Imase, Aichi, JP;
Assignee:
Kamoseiko Kabushiki Kaisha, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B66F 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
In a worm-rack type transmission device (), a curved side portion () is provided on rack teeth () of a linear rack () in a manner to form a part of an ellipsoidal surface (E) and twisted by a changing rate (θ) of a torsional manner a toothed streak () of a worm wheel (). The worm wheel () brings the toothed streak () into engagement with the curved side portion () in a line-to-line contact, enabling to a self-locking property and strengthening a transmission power to insure a high transmission efficiency with a least friction loss so as effectuate a linear drive for an extended distance travel with a high precision.