Fluid-pressure and analogous brake systems – Inertia control
Patent
1977-05-26
1978-07-25
Reger, Duane A.
Fluid-pressure and analogous brake systems
Inertia control
303 6C, 303 22R, B60T 814
Patent
active
041025512
ABSTRACT:
An inertia-controlled valve unit comprises a differential piston slidable within a stepped bore of a housing to provide first and second fluid chambers respectively in open communication with inlet and outlet ports of the housing, the piston being exposed at the smaller end thereof in the first chamber and at the larger end thereof in the second chamber. The valve unit further comprises a tubular spool slidable within an axial bore of the piston and having one end fixedly engaged with the inner wall of the housing in the second chamber and the other end exposed in the first chamber, the spool including an axial passage permitting fluid flows between the first and second chambers, and a cut-off valve including a valve seat provided on the other end of the spool and an inertia-controlled ball located within the first chamber to co-operate with the valve seat and rolling toward the valve seat to cut-off fluid flow from the first chamber to the second chamber when the ball is subjected to a deceleration in excess of a predetermined value.
REFERENCES:
patent: 3317251 (1967-05-01), Hambling et al.
patent: 3385308 (1968-05-01), Farr
patent: 3489465 (1970-01-01), Bueler
patent: 3727990 (1973-04-01), Vogt
Nogami Tomoyuki
Ohta Takaaki
Reger Duane A.
Toyota Jidosha Kogyo Kabushiki Kaisha
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