Valves and valve actuation – With correlated flow path – Pipe coupling or union
Patent
1994-07-07
1996-01-30
Schwadron, Martin P.
Valves and valve actuation
With correlated flow path
Pipe coupling or union
401289, 401281, 401203, 239281, 403109, A46B 1106, A47L 1322, F16K 5100
Patent
active
054875293
ABSTRACT:
An improved flow-through washing and scrubbing brush handle for interconnection at one end to a source of pressurized water such as a garden hose and connectable at the other end to a flow-through type scrub brush or the like. The device includes structure for varying water flow therethrough for delivery into the scrub brush and further includes a telescoping structure which releasably secures a selected overall length between its sliding inner and outer tubes. Unique sealing arrangements also prevent water leakage anywhere along the device, including from between inner and outer tubes. A loosely fitting locking collar has a recess formed in it so that it includes a pair of circumferentially spaced apart opposed ends and a pair of stop members that are circumferentially spaced apart from one another by a greater distance than the spacing between the opposed ends. A longitudinally extending protrusion formed on an .eccentric cam surface engages a first stop member when the inner tube is rotated in a first direction relative to the outer tube. Such engagement continually pushes the locking collar around the eccentric cam surface so that the tubes freewheel with respect to one another. When the inner tube is rotated in the opposite direction, the protrusion does not engage a second stop member and the locking collar wedges between the eccentric cam surface and the outer tube to lock the inner and outer tubes relative to one another.
REFERENCES:
patent: 4329076 (1982-05-01), Coreth
patent: 4561798 (1985-12-01), Elcrin et al.
patent: 5058619 (1991-10-01), Zheng
patent: 5316264 (1994-05-01), Newman
patent: 5417511 (1995-05-01), Warden
Lee Kevin L.
Mason, Jr. Joseph C.
Schwadron Martin P.
Smith Ronald E.
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