Damper equipped with relative displacement detecting sensor

Details Damper equipped with relative displacement detecting sensor Damper equipped with relative displacement detecting sensor

2011-08-09

2011-08-09

King, Bradley T (Department: 3657)

Brakes

Internal-resistance motion retarder

Motion damped from condition detected outside of retarder

C188S267000

Reexamination Certificate

active

07992692

ABSTRACT:
The present invention relates to a cylinder which has hollow portion therein; a piston rod which is inserted through an upper side of the cylinder and has a groove pattern having plurality of convex portions and concave portions which are alternately formed; a piston valve which is connected with a lower end of the piston rod so as to be reciprocated in the cylinder and has a fluid passing hole which is formed in an up and down direction; a rod guide which closes up an upper end of the cylinder tightly and guides an up-down movement of the piston rod and which has a through-hole at a side portion thereof; and a sensor module which is installed to the rod guide so as to detect a movement of the piston rod by using a variation in magnetic field generated when the piston rod is moved.

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patent: 09-329462 (1997-12-01), None
patent: 2006-273222 (2006-10-01), None

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