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. 31, 2015
Filed:
Nov. 29, 2011
Kenichi Hisamatsu, Hirakata, JP;
Kenichi Hisamatsu, Hirakata, JP;
Komatsu Ltd., Tokyo, JP;
Abstract
To provide a crawler bushing and a crawler link device that can maintain a sealing function stably on a long-term basis and permits easy maintenance for recovery of the sealing function. The bushing includes: crawler bushing body () including large-diameter cylindrical part () defining an intermediate section along axis (O) and small-diameter cylindrical part () which defines an end section along axis (O) and is smaller in diameter than large-diameter cylindrical part (); elastic ring () mounted to an outer periphery of small-diameter cylindrical part (); seal ring () which is formed with seal contact end face () at its outer end and coupled to small-diameter cylindrical part () through elastic ring (); reverse tapered surface () and mountain-shaped projection () for preventing outward movement of elastic ring () along axis (O) of small-diameter cylindrical part (); and tongue-shaped projection () and reverse tapered surface () for preventing outward movement of seal ring () along axis (O) of small-diameter cylindrical part ().