US PATENT SUBCLASS 277 / 345
SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL)

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

345SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10}
346  DF  .~> Diverse and distinct dynamic seals {3}
354  DF  .~> Helically threaded part
355  DF  .~> Brush seal
356  DF  .~> For journal box (e.g., railway car journal, etc.)
357  DF  .~> For rotary piston
358  DF  .~> Relatively rotatable radially extending sealing face member (e.g., face, mechanical, etc.) {9}
409  DF  .~> Close proximity seal (e.g., contactless, fluent, etc.) {4}
433  DF  .~> Centrifugal force affects change in displacement, shape, or contact
434  DF  .~> Piston ring or piston ring expander or seat therefor {15}
500  DF  .~> Circumferential contact seal for other than piston {13}

DEFINITION

Classification: 277/345

SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL):

(under the class definition) Sealing means comprising sealing means to oppose the flow of fluid at the joint or juncture between relatively movable parts and having a relatively movable relationship to at least one of the parts.

(1) Note. Relative movement between the parts need only occur at one time during the operation of the parts being sealed while maintaining sealing during movement, but such movement excludes assembly or disassembly such as the unscrewing of a packed threaded pipe joint.

SEE OR SEARCH THIS CLASS, SUBCLASS:

300+, for a process of dynamic sealing.

590+, for a seal between fixed parts or having a fixed relationship against relatively movable parts.

906, for a seal for a part having indefinite length (e.g., strip, sheet, etc.).

SEE OR SEARCH CLASS

222, Dispensing,

542, for a seal provided for a joint, closure or flow controller of a dispenser.

366, Agitating,

183.4, for a closed connection (e.g., sealed joint, etc.) between a static conveyor with gravity discharge and a rotating mixing chamber.

415, Rotary Kinetic Fluid Motors or Pumps, for a means of guiding or confining (e.g., casing, distributing means, etc.) a working fluid (i.e., a liquid or gas that contacts or supports a rotary means that drives or is driven by the liquid or gas),

109, for a rotating shaft having an abutment surface imparting motion in a sealing fluid inside a chamber, subclasses 110+ for a seal to separate a fluid path to an interior part of an assembly between relatively movable parts and the working fluid path, subclasses 170.1+ for a seal between the rotary means (e.g., runner, etc.) and a static part, or subclass 230 for a seal between a shaft or shaft sleeve and a static part.

494, Imperforate Bowl: Centrifugal Separators, for an apparatus or process that breaks down or subdivides a mixture of fluent material into components by using a receptaclelike part having a wall to subject the material to centrifugal force,

38+, including a seal.