Brakes – Internal-resistance motion retarder – Using a rotary-type fluid damper
Reexamination Certificate
2007-02-13
2007-02-13
Schwartz, Christopher P. (Department: 3683)
Brakes
Internal-resistance motion retarder
Using a rotary-type fluid damper
C188S293000
Reexamination Certificate
active
10703078
ABSTRACT:
A decelerating device includes a casing defining internally a chamber filled with a viscous fluid, e.g. silicone oil; and a movable member fitted in fluidtight manner to the casing, so as to be housed at least partly inside the chamber and immersed in the viscous fluid. The movable member has a partition for dividing the chamber substantially in fluidtight manner into at least two adjacent portions varying in volume as a function of the position of the movable member with respect to the casing; and a calibrated constriction for maintaining permanent hydraulic connection of the at least two adjacent portions of the chamber, so that the viscous fluid flows between the chamber portions as a consequence of relative motion between the movable member and the casing.
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Patent Abstracts of Japan, Publication No. 06193666, Jul. 15, 1994.
ITW Industrial Components S.R.L.
Lowe Hauptman & Berner LLP
Schwartz Christopher P.
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