Piston rod position detector, autotensioner and belt tension...

Details Piston rod position detector, autotensioner and belt tension... Piston rod position detector, autotensioner and belt tension...

2006-07-25

2006-07-25

Charles, Marcus (Department: 3682)

Endless belt power transmission systems or components

Means for adjusting belt tension or for shifting belt,...

Load responsive tension adjuster or shifter

C474S110000, C474S211000, C474S102000, C340S686100, C340S668000, C324S207110, C324S207240, C137S554000

Reexamination Certificate

active

07081059

ABSTRACT:
A piston rod position detecting mechanism is proposed which can detect continuously or in a multiple-point manner that the piston rod position has changed due to increase or decrease in the protruding amount of the piston rod due to aging. The protruding amount from a cylinder end wall is detected by a position detecting mechanism comprising a detecting coil housed in a bobbin provided at the cylinder end, a flange portion formed on the piston rod, and a coil spring. Also, an autotensioner and an electromagnetic valve with such a position detector are proposed. Further, a belt tension adjusting device is provided with a detector for detecting the position of a tension pulley which is pivotable with increase or decrease in the belt tension.

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