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US 4,598,736 AGranted
Solenoid operated valve with balancing means
OwnerWilliam J. Chorkeyinventor
Life of this patent
Estimating the term…
Abstract
A balanced solenoid operated valve having a balanced solenoid plunger, and the valve can be made as a three-way valve or a four-way valve. In the four-way valve embodiment the solenoid plunger balancing means also functions as a sliding spool valve for controlling the flow of fluid through the valve between two valve ports. The four-way valve can be made with a valve body comprising an upper member and a lower member, and wherein the lower member can be adjusted relative to the upper member to vary the locations of the valve ports relative to each other.
Claims8
A balanced solenoid operated valve, characterized in that it comprises:
- (a) a valve body having a bore formed in one end thereof, and an axial bore having a diameter smaller than said first named bore formed in said valve body and communicating at one end with and extending axially and longitudinally inward from the first named bore;
- (b) said axial bore having a poppet valve seat formed therearound at the end thereof which communicates with said first named bore;
- (c) a solenoid operatively mounted on said valve body and having a solenoid plunger provided with a first poppet valve seal axially and transversely disposed on one end thereof and a second poppet valve seal axially and transversely disposed on the other end thereof;
- (d) said solenoid plunger being movable to a balanced de-energized position by a spring means and to a balanced energized position when the solenoid is energized, and when it is in the de-energized position the first poppot valve seal is seated on the poppet valve seat formed around said end of the axial bore which communicates with said first named bore;
- (e) an elongated counter-balancing spool member having one end thereof attached to the end of the solenoid plunger on which the first poppet valve seal is mounted and provided on the other end thereof with a flange means carrying a seal means for sealingly engaging the axial bore;
- (f) said valve being provided with cylinder port means and exhaust port means, and a pressurized fluid inlet port and passage connected to said axial bore at a position between the ends of the elongated counter-balancing spool member;
- and,
- (g) the flow of pressurized fluid between said ports is selectively effected when the solenoid plunger is in the de-energized and energized positions.
5 more elements
A balanced solenoid operated valve, characterized in that it comprises:
- (a) a valve body having a bore formed in one end thereof, and an axial bore having a diameter smaller than said first named bore formed in said valve body and communicating at one end with and extending axially and longitudinally inward from the first named bore;
- (b) said axial bore having a poppet valve seat formed therearound at the end thereof which communicates with said first named bore;
- (c) a solenoid operatively mounted on said valve body and having a solenoid plunger provided with a first poppet valve seal axially and transversely disposed on one end thereof and a second poppet valve seal axially and transversely disposed on the other end thereof;
- (d) said solenoid plunger being movable to a balanced de-energized position by a spring means and to a balanced energized position when the solenoid is energized, and when it is in the de-energized position the first poppet valve seal is seated on the poppet valve seat formed around said end of the axial bore which communicates with said first named bore;
- (e) an elongated counter-balancing spool member having one end thereof attached to the end of the solenoid plunger on which the first poppet valve seal is mounted and provided on the other end thereof with a flange means carrying a seal means for sealingly engaging the axial bore;
- (f) said valve being provided with cylinder port means and exhaust port means, and a pressurized fluid inlet port and passage connected to said axial bore at a position between the ends of the elongated counter-balancing spool member;
- (g) the flow of pressurized fluid between said ports is selectively effected when the solenoid plunger is in the de-energized and energized positions;
- and,
- (h) said cylinder port means includes at least a first cylinder port formed in said valve body and connected by an exhaust passageway formed through the solenoid to a first exhaust port of said exhaust port means, and when the solenoid plunger is in the de-energized position said first cylinder port is exhausted through said exhaust passageway to said exhaust port, and when the solenoid plunger is moved to the energized position the second poppet valve seal thereon seats on a poppet valve seat formed in said exhaust passageway, in a balanced condition to block flow through the exhaust passageway between said first cylinder port and said first exhaust port and said first poppet valve seal on the solenoid plunger is moved off of the first named poppet valve seat to allow flow of pressurized fluid from said axial bore through a passage in the valve body to the first cylinder port.
6 more elements
Dependencies are inferred from the claim text.