FR2435645A1 - Automatic switch for compressed air feed - uses oscillating piston to seal alternate inlets being displaced by pressure and bistable spring - Google Patents

Automatic switch for compressed air feed - uses oscillating piston to seal alternate inlets being displaced by pressure and bistable spring

Info

Publication number
FR2435645A1
FR2435645A1 FR7820609A FR7820609A FR2435645A1 FR 2435645 A1 FR2435645 A1 FR 2435645A1 FR 7820609 A FR7820609 A FR 7820609A FR 7820609 A FR7820609 A FR 7820609A FR 2435645 A1 FR2435645 A1 FR 2435645A1
Authority
FR
France
Prior art keywords
inlets
compressed air
air feed
piston
displaced
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
FR7820609A
Other languages
French (fr)
Inventor
Jean-Louis Neret
Michel Lecam
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Air Liquide SA
Original Assignee
Air Liquide SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Air Liquide SA filed Critical Air Liquide SA
Priority to FR7820609A priority Critical patent/FR2435645A1/en
Priority to IT23994/79A priority patent/IT1125415B/en
Priority to ES482354A priority patent/ES482354A1/en
Publication of FR2435645A1 publication Critical patent/FR2435645A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/04—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves
    • F16K11/044—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only lift valves with movable valve members positioned between valve seats
    • F16K11/0445—Bath/shower selectors

Abstract

The automatic change over switch is activated by pressure differential, utilises a cambered compressed coil spring, and may be used on a compressed air feed to effect the switch to a reserve supply. A hollow casing has two inlets and one or more outlets, accommodating a sliding piston obturator which reciprocates axially to seal off one or other of the inlets. Initial piston movement is caused by pressure differential at the inlets, being terminated by a bistable coil spring. In a permanent state of compression, the spring traverses a central diametric piston bore, and acts to assist a particular piston movement once a central dead point is passed. One of the spring end mountings may be adjustable, the piston bore may take a conical venturi form, and compressible seals may be employed.
FR7820609A 1978-07-11 1978-07-11 Automatic switch for compressed air feed - uses oscillating piston to seal alternate inlets being displaced by pressure and bistable spring Withdrawn FR2435645A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7820609A FR2435645A1 (en) 1978-07-11 1978-07-11 Automatic switch for compressed air feed - uses oscillating piston to seal alternate inlets being displaced by pressure and bistable spring
IT23994/79A IT1125415B (en) 1978-07-11 1979-06-29 AUTOMATIC INVERTER FOR CONTINUOUS FEEDING OF A APPLIANCE WITH UNDER PRESSURE FLUIDS
ES482354A ES482354A1 (en) 1978-07-11 1979-07-10 Automatic switch for compressed air feed - uses oscillating piston to seal alternate inlets being displaced by pressure and bistable spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7820609A FR2435645A1 (en) 1978-07-11 1978-07-11 Automatic switch for compressed air feed - uses oscillating piston to seal alternate inlets being displaced by pressure and bistable spring

Publications (1)

Publication Number Publication Date
FR2435645A1 true FR2435645A1 (en) 1980-04-04

Family

ID=9210572

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7820609A Withdrawn FR2435645A1 (en) 1978-07-11 1978-07-11 Automatic switch for compressed air feed - uses oscillating piston to seal alternate inlets being displaced by pressure and bistable spring

Country Status (3)

Country Link
ES (1) ES482354A1 (en)
FR (1) FR2435645A1 (en)
IT (1) IT1125415B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027862A1 (en) * 1994-04-06 1995-10-19 Flühs Drehtechnik GmbH Multiple-way valve

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084596A (en) * 1935-12-17 1937-06-22 Rice Henry Thomas Container valve
US2417494A (en) * 1942-08-24 1947-03-18 Hoof Products Company Valve end seal
US2654564A (en) * 1949-12-24 1953-10-06 Manning Maxwell & Moore Inc Shuttle valve
FR1576074A (en) * 1967-10-17 1969-07-25

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084596A (en) * 1935-12-17 1937-06-22 Rice Henry Thomas Container valve
US2417494A (en) * 1942-08-24 1947-03-18 Hoof Products Company Valve end seal
US2654564A (en) * 1949-12-24 1953-10-06 Manning Maxwell & Moore Inc Shuttle valve
FR1576074A (en) * 1967-10-17 1969-07-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1995027862A1 (en) * 1994-04-06 1995-10-19 Flühs Drehtechnik GmbH Multiple-way valve

Also Published As

Publication number Publication date
IT1125415B (en) 1986-05-14
ES482354A1 (en) 1980-04-01
IT7923994A0 (en) 1979-06-29

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Legal Events

Date Code Title Description
ST Notification of lapse