US PATENT SUBCLASS 251 / 315.1
.~.~ Housing construction

Current as of: June, 1999
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251 /   HD   VALVES AND VALVE ACTUATION

304  DF  ROTARY VALVES {5}
315.01  DF  .~ Ball valve {7}
315.1.~.~ Housing construction {4}
315.11  DF  .~.~.~> Head removable perpendicular to flow passage {1}
315.13  DF  .~.~.~> Assembled around the head
315.14  DF  .~.~.~> Head removable along one side of flow passage
315.15  DF  .~.~.~> Having inseparable head

DEFINITION

Classification: 251/315.1

Housing construction:

(under subclass 315.01) Ball valve relating to the assembly

of a body structure which completely surrounds the spherical head and defines the flow passage therethrough.