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:
May. 09, 2000
Filed:
Jul. 30, 1998
Tadasu Suzuki, Higashimurayama, JP;
Tsubakimoto Chain Co., Osaka, JP;
Abstract
A ratchet tensioner comprising a ratchet (1) having a first ratchet prong (6) engageable with one of ratchet teeth (T) at a position displaced from the axis (O) of a ratchet shaft (3) toward the free end of a plunger (5), and a second ratchet prong (7) receivable between two adjacent ones of the ratchet teeth (T) at a position located on a line (N) extending through the axis (O) of the ratchet shaft (3) perpendicular to an axis of the plunger (5) when the first ratchet prong (6) is in mesh with the one ratchet tooth (T). A projecting length (S2) of the second prong (7), which is measured from the axis (O) of the ratchet shaft (3) to the top of the second ratchet prong (7) in a direction parallel to the perpendicular line (N), is made smaller than a corresponding projecting length (S1) of the first ratchet prong (6) at least by an amount equal to the given manufacturing tolerance in the production of the ratchet.