US PATENT SUBCLASS 92 / 13
.~.~ WITH ADJUSTABLE MEANS TO VARY STROKE OF WORKING MEMBER

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

Internet Version by PATENTEC © 1999      Terms of Use


92 /   HD   EXPANSIBLE CHAMBER DEVICES

12.1  DF  DISPLACEMENT CONTROL OF PLURAL CYLINDERS ARRANGED IN PARALLEL, RADIAL, OR CONICAL RELATIONSHIP WITH ROTARY TRANSMISSION AXIS {10}
12.2  DF  .~ Parallel cylinders {1}
13.~.~ WITH ADJUSTABLE MEANS TO VARY STROKE OF WORKING MEMBER

DEFINITION

Classification: 92/13

(under the class definition) Apparatus comprising means associated with the expansible chamber device, said means being adapted to be selectively positioned or moved and held in different positions to either change the extent or vary the end limits of reciprocatory movement of the working member relative to the working chamber.

(1) Note. Means which acts to positively lock a working member in both directions of reciprocatory movement is not considered to be a stroke varying device under this definition, such subject matter being classified in subclasses 15+ below.

(2) Note. An expansible chamber device having means to vary the displacement thereof and in which it cannot be determined whether the expansible chamber device is of the Class 92 or Class 418 type will be classified under this definition.

(3) Note. Included under this definition are diaphragm or bellows type working members which are reciprocated to cause expansion or contraction of the chamber formed thereby.

(4) Note. This definition is not intended to include stroke control in response to a sensed condition (e.g., speed or motive fluid condition).

SEE OR SEARCH THIS CLASS, SUBCLASS:

62+, for plural relatively movable working members in which one of said working members is moved by a second working member through a separating abutment connection. SEE OR SEARCH CLASS

91, Motors: Expansible Chamber Type,

167, for an expansible chamber motor comprising a unit having separately controlled working chambers the extension of which equals the sum of the individual chamber extension.

417, Pumps,

499+, for means to effect control of a pumping member controlled port at different positions of the pumping member stroke by changing the extent or varying the end limits of the pumping member reciprocatory path.