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. 09, 2021
Filed:
Oct. 19, 2017
Hitachi Automotive Systems, Ltd., Hitachinaka, JP;
Jun Soeda, Fujisawa, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
Abstract
The present invention is to provide a vehicle-mounted apparatus having a biasing structure using a coil spring capable of reducing a lateral force of a coil spring that is applied to a biasing target member. When N1, n1, N0, and n0 represent the number of effective turns when the relief valve springis set in a valve holeof a spoolin a compressed state, a value of an integer of N1, the number of effective turns when a length of the relief valve springis a natural length, and a value of an integer of N0, respectively, the springsatisfies an equation 1: 0≤N1−n1≤0.25 or an equation 2: 0.75≤N1−n1<1.