US3626342A — Relief valve structure for oil bath solenoid

Claim 1

Independent Claim 145 words

An oil bath solenoid comprising, a closed and sealed housing including sealingly connected base and cover portions, an electrical solenoid disposed in this housing and including an axially reciprocable plunger movable between two positions, said base portion being provided with an aperture therethrough and an actuating pin extending through the aperture and abutting the plunger internally of the housing so as to be shifted by reciprocable movement of the plunger, an oil bath fluid filling the housing and enveloping the solenoid and plunger, a manual reset actuator slidably mounted in said housing and operable when manually pushed inwardly to move said plunger from one of its two positions to the other position, and a pressure relief valve mounted within said manual reset actuator and operable to relieve fluid pressure internally of said housing in the event that it exceeds the pressure setting of said valve.

Claim 2

Dependent Claim 145 words

An oil bath solenoid comprising, a closed and sealed housing including sealingly connected base and cover portions, an electrical solenoid disposed in this housing and including an axially reciprocable plunger movable between two positions, said base portion being provided with an aperture therethrough and an actuating pin extending through the aperture and abutting the plunger internally of the housing so as to be shifted by reciprocable movement of the plunger, an oil bath fluid filling the housing and enveloping the solenoid and plunger, a manual reset actuator slidably mounted in said housing and operable when manually pushed inwardly to move said plunger from one of its two positions to the other position, and a pressure relief valve mounted within said manual reset actuator and operable to relieve fluid pressure internally of said housing in the event that it exceeds the pressure setting of said valve.

Claim 3

Dependent Claim 22 words

The oil bath solenoid of claim 1 in which said actuator is mounted in said housing in axial alignment with said plunger.

Claim 4

Dependent Claim 39 words

The oil bath solenoid of claim 2 in which said reset actuator has a resilient bumper secured thereto internally of the housing and engageable with said plunger when said reset button is manually pushed inwardly to reset the plunger.

Claim 5

Dependent Claim 31 words

The oil bath solenoid of claim 3 in which said resilient bumper is so positioned as to act as a physical stop for said plunger in one of its two positions.

Claim 6

Dependent Claim 24 words

The oil bath solenoid of claim 1 in which said pressure relief valve comprises a ball check valve spring biased to a closed position.

Claim 7

Dependent Claim 39 words

The oil bath solenoid of claim 5 in which said manual reset actuator includes a cup-shaped element, the closed end of which is located externally of said housing and the open end of which is located within said housing.

Claim 8

Dependent Claim 136 words

An oil bath solenoid Having a relief valve structure comprising a plunger adapted to reciprocate between a home position and an away position, a wire coil which, when electrically energized, is adapted to move said plunger to one of said home or away positions, a housing surrounding said plunger and said coil, said housing being provided with an oil bath therein, and relief valve structure mounted in a wall of said housing, said relief valve structure including a check valve through which oil can be exhausted from the interior of said housing, and a cup within which said check valve is carried, said cup being slidably carried in said housing wall such that said cup may be manually depressed into the housing''s chamber and engaged with said plunger to move said plunger toward the home position.

Claim 9

Dependent Claim 136 words

An oil bath solenoid Having a relief valve structure comprising a plunger adapted to reciprocate between a home position and an away position, a wire coil which, when electrically energized, is adapted to move said plunger to one of said home or away positions, a housing surrounding said plunger and said coil, said housing being provided with an oil bath therein, and relief valve structure mounted in a wall of said housing, said relief valve structure including a check valve through which oil can be exhausted from the interior of said housing, and a cup within which said check valve is carried, said cup being slidably carried in said housing wall such that said cup may be manually depressed into the housing''s chamber and engaged with said plunger to move said plunger toward the home position.

Claim 10

Dependent Claim 57 words

A device as set forth in claim 7 wherein said check valve includes a spring seated against the bottom of said cup a ball seated on the other end of said spring, a sealing ring mounted in said cup to provide the valve seat for said ball, and a vent port in the bottom of said cup.

Claim 11

Dependent Claim 34 words

A device as set forth in claim 7 including a bumper flange integral with the lip of said cup, said plunger abutting said bumper flange when said plunger is moved toward the away position.

Claim 12

Dependent Claim 52 words

A device as set forth in claim 9 including a tubular wall extending inwardly from said housing wall into the housing''s chamber, said cup being slidably carried in said tubular wall, and at least a portion of said bumper flange being supported on its underside by the lip of said tubular wall.

Claim 13

Dependent Claim 37 words

A device as set forth in claim 10, wherein the length of said cup is at least as great as the distance between the bumper face of said bumper flange and the closest face of said plunger.

Claim 14

Dependent Claim 116 words

An oil bath solenoid having a relief valve structure comprising a plunger adapted to reciprocate between a home position and an away position, a wire coil which, when electrically energized, is adapted to move said plunger to one of said home or away position, a housing surrounding said plunger and said coil, said housing being provided with an oil bath therein, and relief valve structure mounted in a wall of said housing, said relief valve structure including a check valve through which oil can be exhausted from the interior of said housing, and a bumper flange integral with said relief valve structure, said plunger abutting said bumper flange when same is moved toward the away position.

Claim 15

Dependent Claim 116 words

An oil bath solenoid having a relief valve structure comprising a plunger adapted to reciprocate between a home position and an away position, a wire coil which, when electrically energized, is adapted to move said plunger to one of said home or away position, a housing surrounding said plunger and said coil, said housing being provided with an oil bath therein, and relief valve structure mounted in a wall of said housing, said relief valve structure including a check valve through which oil can be exhausted from the interior of said housing, and a bumper flange integral with said relief valve structure, said plunger abutting said bumper flange when same is moved toward the away position.

Claim 16

Dependent Claim 64 words

A device as set forth in claim 12 including a cup within which said check valve is carried, said cup being slidably carried in said housing wall such that said cup may be manually depressed into the housing''s chamber and engaged with said plunger to move said plunger toward the home position, and said bumper flange being integral with the lip of said cup.

Claim 17

Dependent Claim 52 words

A device as set forth in claim 13 including a tubular wall extending inwardly from said housing wall into the housing''s chamber, said cup being slidably carried in said tubular wall, and at least a portion of said bumper flange being supported on its underside by the lip of said tubular wall.

Claim 18

Dependent Claim 37 words

A device as set forth in claim 14, wherein the length of said cup is at least as great as the distance between the bumper face of said bumper flange and the closest face of said plunger.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1974-12-06	1975-06-07	1975-12-07	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1978-12-06	1979-06-07	1979-12-07	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1982-12-06	1983-06-07	1983-12-07	$7700.00	Window Closed / Lapsed

Relief valve structure for oil bath solenoid

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