US PATENT SUBCLASS 91 / 521
.~ Separate valve means actuatable by a common nonmanual actuator or separately actuatable means with common manual actuator

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


91 /   HD   MOTORS: EXPANSIBLE CHAMBER TYPE

508  DF  PLURAL RELATIVELY MOVABLE OR RIGIDLY INTERCONNECTED WORKING MEMBERS {11}
521.~ Separate valve means actuatable by a common nonmanual actuator or separately actuatable means with common manual actuator {3}
522  DF  .~.~> With means to independently actuate valve means
523  DF  .~.~> Simultaneously actuated separate valve means
524  DF  .~.~> Successive actuation of separate valve means

DEFINITION

Classification: 91/521

Separate valve means actuatable by a common nonmanual actuator or separately actuatable valve means with common manual actuator:

(under subclass 508) Apparatus having (a) separate valve means for plural working members and a single nonmanual means for actuating each of the valve means separately, or (b) separately actuatable valve means for plural working members with a common manual actuator.

(1) Note. The single means which actuates the separate valves may have several different means to move it (e.g., plural handles, plural solenoids). Conversely, the single element which actuates separate valves may be a single handle or switch which controls individual operations for each valve.

SEE OR SEARCH THIS CLASS, SUBCLASS:

508, for plural valves with manual means to simultaneously operate them in identical fashion without means to adjust the movement of one valve relative to another.

530, for separately controlled valves for each working member.

533, for plural rigidly connected working members controlled by a single valve.

536, for relatively movable working members controlled by a single motive fluid control valve. A single motive fluid

control valve is one having a single movable member, such as a rotatable or slidable valve core or sleeve, which may have a plurality of variously arranged fluid passages which may be caused to be aligned with passages in an associated stationary member to control one or more motor means upon various movements of said movable member.