Title: Fluid flow control valves

Abstract: A diaphragm valve has a relatively long seating formed by a plurality of ribs which engage with one air operated diaphragm. An annular valve is provided by slotting the outer surface of an annular seating member which engages an endless diaphragm, alternate slots communicating with the inlet or outlet of the valve. A pneumatic actuator for a vehicle braking system is provided with internal valve means for controlling the flow of air through the movable wall carrying the actuating member. An anti-skid braking system employs such a pneumatic brake actuator, the internal valve means being operated by skid sensing means.

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Inventors: Harrison, Anthony William (Birmingham, EN)

Application Number: 440577
Filing Date: 1974-02-07
Publication_date: 1976-09-14
Assignee: Girling Limited (Birmingham, EN)
Primary Class(es): 303/115.3 91/422, 91/457, 91/461, 188/181A, 251/5
Other Classes:
US Patent Ref:

2520374	Aug, 1950	Rockwell	91/376.
2778339	Jan, 1957	Mancus, Jr.	91/422.
3092144	Jun, 1963	Green	251/5.
3232181	Feb, 1966	Blatt	91/422.
3496833	Feb, 1970	Kobelt	91/431.
3502001	Mar, 1970	Moore	91/431.
3646849	Mar, 1972	Smith	91/52.

Other Refs:
Primary Examiner: Maslousky, Paul E.
Assistant Examiner:
Attorney: Scrivener Parker Scrivener and Clarke