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US 7,001,300 B1Granted
Replacement solenoid switch valve assembly
AssigneeSonnax Industries, Inc.
InventorsMaura Jane Stafford, Robert C. Warnke
Life of this patent
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AssigneeSonnax Industries, Inc.
InventorsMaura Jane Stafford, Robert C. Warnke
Estimating the term…
A replacement solenoid switch valve assembly for an automatic transmission system is disclosed. The switch valve assembly includes a switch valve member, which acts in conjunction with an interlocking valve disc set. The disc set is configured for reciprocating movement in tandem and also enables axial shifting movement of the discs relative to one another to support the functions of the solenoid switch valve assembly. This is accomplished by providing an axial stem which projects in perpendicular relation from a first disc. A mating hole in the second disc is radially disposed on the stem in sliding engagement thereon effectively interlocking the discs in alignment. In an installation method of the present invention, the tandem disc set is provided in standard size as a drop-in replacement for valve bodies that do not exhibit excessive bore wear and also in an oversize embodiment for valve bodies showing excessive wear.
An improved solenoid switch valve assembly for use in combination with a valve body of an automatic transmission, said solenoid switch valve assembly regulating the flow of automatic transmission fluid to a low/reverse apply circuit in a first position thereof and, alternatively, to a lock-up apply circuit in a second position thereof, said solenoid switch valve assembly including a solenoid switch valve and a pair of valve discs arranged in end-to-end relation for reciprocating movement within said valve body in fluid communication with said circuits, wherein the improvement comprises:
A method of improving hydraulic control of a torque converter within a automatic transmission system, wherein said transmission system includes an original equipment solenoid switch valve assembly within a valve body thereof for regulating the flow of automatic transmission fluid to a low/reverse apply circuit and, alternatively, to a lock-up apply circuit within said system, said solenoid switch valve assembly including a solenoid switch valve member and a pair of switch valve discs arranged in end-to-end relation for reciprocating movement within a valve bore in said valve body in fluid communication with said circuits, said method comprising the steps of:
Dependencies are inferred from the claim text.