IP Library Granted Patent US 8,931,605
Granted Patent B2
US 8,931,605 · App. 13/695,494 · Granted Jan 13, 2015

Fluid pressure damper

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,931,605
App. No.
13/695,494
Granted
Jan 13, 2015
Kind
B2
Abstract

A fluid pressure damper is provided with a damper main body composed of an outer tube and an inner tube, a bottom member for sealing a bottom side opening of the damper main body, a suspension spring and a damper. The damper includes a cylinder storing a working fluid inside. The cylinder is inserted into the inner tube and fixed to the bottom member by being sandwiched between a head member fixed to a joint member coupled to the inner tube and the bottom member. The joint member includes a stopper member with the inner periphery of which the head member is threadably engaged, and a pin member which couples the stopper member to the inner periphery of the inner tube. The suspension spring is supported by the stopper member.

Claims (14)

1. A fluid pressure damper, comprising:

a damper main body which includes an outer tube and an inner tube slidably inserted into the outer tube;

a bottom member which seals a bottom side opening of the damper main body;

a suspension spring which is housed in the damper main body and absorbs an impact applied to the damper main body; and

a damper which is housed in the damper main body and damps extension and contraction movements of the damper main body associated with the absorption of an impact by the suspension spring;

wherein the damper includes a cylinder standing in an axial center part of the inner tube and storing a working fluid inside;

the cylinder is inserted into the inner tube and fixed to the bottom member by being sandwiched between a head member fixed to a joint member coupled to the inner tube and the bottom member;

the joint member includes a stopper member which is in the form of a ring and with an inner periphery of which the head member is threadably engaged, and a pin member which couples the stopper member to an inner periphery of the inner tube;

the suspension spring is supported by the stopper member via a spring seat;

the suspension spring is in direct contact with the spring seat; and

the spring seat is in direct contact with the stopper member.

2. The fluid pressure damper according to claim 1 , wherein:

the spring seat includes an annular seat portion which receives the suspension spring and a leg portion which hangs down from the seat portion and is held in contact with the stopper member.

3. The fluid pressure damper according to claim 1 , wherein the spring seat is free of any direct contact with the head member.

Assignments (2)
CHANGE OF NAME Recorded Dec 21, 2015
From: KAYABA INDUSTRY CO., LTD.
To: KYB CORPORATION
Reel/Frame 037355/0086 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 31, 2012
From: SUGAWARA, HIDETOSHI; JINNOUCHI, TAKAHIKO; TOMIUGA, TAKESHI
To: KAYABA INDUSTRY CO., LTD.
Reel/Frame 029218/0722 →