Hand held transmission fluid changer
AssigneeFlo-Dynamics, Inc.
InventorJeffrey P. Few
Life of this patent
Estimating the term…
Abstract
A hand held transmission fluid changer includes a compact housing internally plumbed with a pair of open ended drain and supply tubes for connection at respective first ends with the first ends of a pair of hoses connected at their opposite ends with remote waste and unused fluid tanks. The respective tubes include respective second ends for connection with a second pair of tubes leading to respective upstream and downstream transmission components for, respectively, withdrawing used fluid from and introducing unused fluid to a transmission. A demand pump is connected in fluid circuit with the supply hose to flow unused fluid from the unused fluid tank to the supply tube. A pair of flow control valves are disposed in the respective tubes to allow the operator to adjust and match the respective flow rates through such tubes.
Claims20
A hand held transmission fluid changer for connection with a pressurized unused fluid supply hose, a disposal hose, an unused fluid hose and a used fluid hose and comprising:
- a hand held housing for connection with said supply hose and formed with an interior compartment;
- supply and drain robes in said housing and projecting at their respective opposite ends therefrom to form, respectively, a supply inlet and outlet and a drain inlet and outlet;
- respective supply inlet and outlet couplings at the respective said supply tube inlet and outlet for connection, respectively, with said supply hose and transmission unused fluid hose;
- respective drain inlet and outlet couplings at the respective said drain tube inlet and outlet for connection with the respective said transmission used fluid hose and disposal hose;
- and
- a flow control valve in one of said tubes for controlling flow therethrough whereby said supply inlet coupling may be coupled with said supply hose, said drain outlet coupling coupled with said disposal hose, said supply outlet coupling coupled with said unused fluid hose, said drain inlet coupling coupled with said used fluid hose to flow pressurized unused fluid from said supply tank to said unused fluid hose and flow used fluid from said used fluid hose to said drain hose while said valve is adjusted to balance the flow rates in said supply and drain tubes.
An automatic transmission fluid changer system for installation in a car bay for servicing a transmission of a car parked therein of the type having a transmission pump upstream connection and a downstream connection, said system comprising;
- a bulk supply tank;
- a pump for pressurizing fluid from said supply tank;
- a supply hose for mounting on one end to said bay and formed with a manipulation length leading to a free end having a supply hose coupling thereon;
- a supply conduit connected between said supply tank and said one end of said hose;
- a bulk waste fluid tank remote from said bay;
- a drain hose leading from said waste fluid tank and including on its free end a waste fluid coupling;
- a portable, hand held, changer including a housing configured to be grasped by hand and manipulated about, respective supply and drain tubes in said housing and including at their opposite ends respective supply inlet and outlet couplings and drain inlet and outlet couplings, said supply inlet coupling releasably couplable with said supply hose coupling and said drain outlet coupling releasably couplable with said waste fluid coupling, said system further including:
- a transmission supply hose for connection on one end with said transmission upstream connection and including on its opposite end a transmission supply hose inlet coupling for coupling with said supply outlet coupling;
- and
- a transmission drain hose for connection on one end with said transmission downstream connection and including on its opposite end a transmission drain hose outlet coupling for connection with said drain inlet coupling.
A hand held transmission fluid changer for connection with a pressurized unused fluid supply hose, a disposal hose, an unused fluid hose and a used fluid hose and comprising:
- a hand held housing for connection with said supply hose and formed with an interior compartment;
- supply and drain tubes in said housing and projecting at their respective opposite ends therefrom to form, respectively, supply inlet and outlet ends and drain inlet and outlet ends;
- and
- a flow control valve in one of said tubes for controlling flow therethrough whereby said supply inlet end may be coupled with said supply hose, said drain outlet end coupled with said disposal hose, said supply outlet end coupled with said unused fluid hose, said drain inlet end coupled with said used fluid hose to flow pressurized unused fluid from said supply tank to said unused fluid hose and flow used fluid from said used fluid hose to said drain hose while said valve is adjusted to balance the flow rates in said supply and drain tubes.
Dependencies are inferred from the claim text.