US PATENT SUBCLASS 418 / 104
WITH MECHANICAL SEALING

Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

104WITH MECHANICAL SEALING {14}
105  DF  .~> Abutment position adjustment
106  DF  .~> Vane position adjustment
107  DF  .~> By changing working member or cylinder relative position {1}
110  DF  .~> By axially relatively moving working member sections
111  DF  .~> By axially relatively moving vane or abutment sections
112  DF  .~> Seal on working member periphery separates inlet and outlet ports {1}
125  DF  .~> Seal on cylinder engaging rotary member separates inlet and outlet ports {3}
130  DF  .~> Cup shaped cylinder axially movable to abut cylinder side
131  DF  .~> Axially movable end wall or end wall portion {4}
136  DF  .~> Seal element between working member and vane {1}
139  DF  .~> Seal element between abutment and cylinder or working member
140  DF  .~> Seal element between working member and cylinder {3}
145  DF  .~> Seal element between vane and cylinder {2}
149  DF  .~> Seal element between stationary cylinder parts

DEFINITION

Classification: 418/104

(under the class definition) Apparatus in which a working chamber part comprising either the working member, cylinder or partition member is provided with a movable, expansible, adjustable or deformable means having at least substantial engagement with another working chamber part to oppose the passage of working fluid therepast to constrain the working fluid to move in a prescribed path of flow.

(1) Note. The means may include an adjustable working member or cylinder.

(2) Note. A movable vane or abutment moved incident to the expansion and contraction of the expandable chamber is not considered to be sealing, however, if additionally to such a vane or abutment there is provided a movable, expandable, adjustable or deformable means enabling closer tolerances to be maintained between the relatively moving parts to thereby oppose the passage of fluid therebetween such is considered to be sealing and proper for classification here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

179, for rotary expansion chamber devices made of specific or diverse materials whereby sealing may be obtained or maintained solely by the difference in expansion characteristics of the material.

SEE OR SEARCH CLASS

277, Seal for a Joint or Juncture, for a generic sealing means or process, 357, for a dynamic seal for a rotary piston.