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1. (WO1998049480) TENSION-SPRING RETURN ROTARY ACTUATOR
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/049480 International Application No.: PCT/US1998/007858
Publication Date: 05.11.1998 International Filing Date: 17.04.1998
Chapter 2 Demand Filed: 18.11.1998
IPC:
F16K 31/165 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
K
VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
31
Operating means; Releasing devices
12
actuated by fluid
16
with a mechanism, other than pulling- or pushing-rod, between fluid motor and closure member
165
the fluid acting on a diaphragm
Applicants:
FISHER CONTROLS INTERNATIONAL, INC. [US/US]; 8000 Maryland Avenue Clayton, MO 63105, US
Inventors:
EGGLESTON, Philip, Wayne; US
Agent:
SCARPELLI, Nate, F.; Marshall, O'Toole, Gerstein, Murray & Borun 6300 Sears Tower 233 South Wacker Drive Chicago, IL 60606, US
Priority Data:
08/845,31225.04.1997US
Title (EN) TENSION-SPRING RETURN ROTARY ACTUATOR
(FR) ACTIONNEUR DE SOUPAPE ROTATIVE A RAPPEL DE RESSORT SOUS TENSION
Abstract:
(EN) A rotary valve actuator with movable actuator linkage maintained in a constant 'pull-pull' tension, includes a sliding canister (12), rotatable lever (16), and a return spring (56) substantially aligned in-line with each other. The linear motion of the canister in response to an expanding and contracting pressurized bladder (60) is converted through chain linkage (36, 38) into rotary lever motion. The return spring is connected through respective chain linkage to the lever so the pulling tension of the spring/lever linkage rotates the lever and maintains tension on both chain linkages. Adjustable travel stops (108) are provided. In an alternate embodiment the return spring chain linkage is configured at right angles to the linear movement of the canister.
(FR) Cette invention se rapporte à un actionneur de soupape rotative avec tringlerie mobile maintenue dans une tension de type tire-tire constante, cet actionneur comprenant un tiroir coulissant (12), un levier rotatif (16) et un ressort de rappel (56) qui sont alignés sensiblement linéairement l'un par rapport à l'autre. Le mouvement linéaire du tiroir en réponse à la dilatation et à la con traction d'une poche sous pression (60) est converti par une tringlerie à chaîne (36, 38) en un mouvement de levier rotatif. Le ressort de rappel est relié au levier par une tringlerie à chaîne correspondante, pour que la tension de tirage de la tringlerie du ressort et/ou du levier mette le levier en rotation et maintienne la tension sur les deux tringlerie à chaîne. Des butées d'avance régulables (108) sont prévues. Dans une variante, la tringlerie à chaîne du ressort de rappel est configurée à angles droits par rapport au mouvement linéaire du tiroir.
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Designated States: AL, AM, AT, AU, AZ, BA, BB, BG, BR, BY, CA, CH, CN, CU, CZ, DE, DK, EE, ES, FI, GB, GE, GH, GM, GW, HU, ID, IL, IS, JP, KE, KG, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, MD, MG, MK, MN, MW, MX, NO, NZ, PL, PT, RO, RU, SD, SE, SG, SI, SK, SL, TJ, TM, TR, TT, UA, UG, UZ, VN, YU, ZW
African Regional Intellectual Property Organization (ARIPO) (GH, GM, KE, LS, MW, SD, SZ, UG, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
EP0975907JP2001524190 AU1998071350