.~ Including valve assembly, disassembly, or inspection facilitating means
DEFINITION
Classification: 417/454
(under subclass 437) Apparatus comprising means designed to facilitate the removal or replacement of a valve of the pump or to facilitate access to a valve of the pump for inspection
or repair, etc.
(1) Note. Excluded from this definition are mere securing means for parts which would permit the removal or replacement of a valve or access thereto unless said securing means is disclosed as being specifically designed for said purpose.
SEE OR SEARCH THIS CLASS, SUBCLASS:
448+, for a pump mounted in a vertical tubular flow conduit removable as a unit by driving rod manipulation.
451+, for a valve element mounted in a fixed chamber wall and selectively removable with the pumping member.
SEE OR SEARCH CLASS 92, Expansible Chamber Devices,
128, for expansible chamber devices having assembly or disassembly facilitating means.
137, Fluid Handling,
454.4, for removable, pump-type valve head and seat unit in which no pumping member is claimed.
