US3795383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ball-type solenoid valves and methods of assembling same
Assignee: Renault SA
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Filing: 1972-12-07
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Granted: 1974-03-05
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Expires: 1992-12-07
Abstract
Abstract The ball guide of this solenoid valve, consists of a pressed member acting at the same time as the end cover of the valve case so as to close the magnetic circuit thereof; it consists of magnetic metal formed with a cylindrical projection having formed at the same time in its bore longitudinal grooves for permitting the fluid flow, other means being provided for properly sealing the core passage in the closed valve position.
Inventors
- 👤 C Lombard
- 👤 C Moyses
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:39
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/06; F16K31/0644; F16K31/0655; F16K31/0658; F16K31/0662; F16K1/00; F16K1/14; F16K31/0651; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49421
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
122 words
Ball-type solenoid valve comprising a case of pressed magnetic material enclosing an electromagnet coil winding, a fixed core constituting a fluid inlet passage, a flexible seat, a ball of magnetic material for closing said passage and a ball guide acting at the same time as a case end cover for closing the magnetic circuit, said ball guide comprising in its central aperture longitudinal grooves to permit the fluid flow therethrough, characterised in that said ball guide consists of a pressed magnetic sheet-metal flange formed with an integral central cylindrical projection in which said longitudinal fluid flow grooves are formed jointly by upsetting the metal of said projection, other means being provided for properly closing the core passage in the closed valve position.
Claim 2
Dependent Claim
122 words
Ball-type solenoid valve comprising a case of pressed magnetic material enclosing an electromagnet coil winding, a fixed core constituting a fluid inlet passage, a flexible seat, a ball of magnetic material for closing said passage and a ball guide acting at the same time as a case end cover for closing the magnetic circuit, said ball guide comprising in its central aperture longitudinal grooves to permit the fluid flow therethrough, characterised in that said ball guide consists of a pressed magnetic sheet-metal flange formed with an integral central cylindrical projection in which said longitudinal fluid flow grooves are formed jointly by upsetting the metal of said projection, other means being provided for properly closing the core passage in the closed valve position.
Claim 3
Dependent Claim
61 words
Solenoid valve according to claim 1, characterised in that pressed lugs are formed in the outer periphery of said ball-guide flange by permanent deformation and partial shearing of the marginal portion thereof, each lug comprising from its center outwards an inclined plane having side faces substantially perpendicular to the flange, said lugs being adapted to be welded electrically to said case.
Claim 4
Dependent Claim
77 words
Solenoid valve according to claim 2, characterised in that the case enclosing said fIxed core comprises welding lugs registering with a shoulder of said core, said lugs being obtained by permanent deformation and partial shearing and constituting each an inclined plane extending from the exterior to the center of said case, with a substantially flat upper face and side faces substantially perpendicular to the case bottom, said lugs being adapted to be welded electrically to said core.
Claim 5
Dependent Claim
40 words
Solenoid valve according to claim 3, characterised in that the magnetic core end registering with said ball has two bevelled edges, namely an outer edge and an inner edge, with a flat annular face extending therebetween and interconnecting said bevels.
Claim 6
Dependent Claim
75 words
Solenoid valve according to claim 4, characterised in that said magnetic ball is coated in a manner known per se with non-magnetic material, the hardness of this coating material being at least 1.5 times the hardness of the magnetic core by which said ball is attracted in the energized condition of the solenoid valve winding, which core is engaged by said wall, said coating consisting for example of electrolytic copper obtained in a basic medium.
Claim 7
Dependent Claim
94 words
Solenoid valve according to claim 1, characterised in that the flexible valve seat consists in a manner known per se of a tubular element engaging the widened end of the fluid passage in said core, said tubular element comprising an inner shoulder and an outer shoulder having a slightly rounded corner at its inner diameter, a lock washer being adapted to engage said outer shoulder, the end portion of reduced diameter of said tubular element which is engaged in said washer having in all cases a length inferior to the thickness of said washer.
Claim 8
Dependent Claim
72 words
Solenoid valve according to claim 6, characterised in that said washer is force fitted into said core and comprises on its side registering with said flexible seat an outer bevel of moderate inclination adapted to facilitate the force fitting of said washer while avoiding the upsetting of the washer metal, and on its inner diameter another bevel of greater inclination adapted to be engaged by the rounded corner of said flexible seat.
Claim 9
Dependent Claim
78 words
Solenoid valve according to claim 1, characterised in that said flexible seat consists of a small ball of suitable flexible material retained in the central passage of said core and adapted to co-act with said movable ball for closing the core passage through said small flexible ball, the necessary fluid-tightness being obtained by deformation of said small ball either against a reduced diameter of said passage and/or along a certain length of the widened portion of said passage.
Claim 10
Dependent Claim
47 words
Solenoid valve according to claim 1, characterised in that the coil spool of insulating material on which the electromagnet winding is formed comprises on one of its flanges a slot having a skew bottom, said slot opening tangentially to the inlet into the bottom of said spool.
Claim 11
Dependent Claim
97 words
Solenoid valve according to claim 9, in which the connection between the enamelled wires of said winding and the lead-out wires of greater diameter is obtained in a manner known per se by using weldless connectors adapted to break the enamel layer during the crimping operation, the valve being characterised in that said lead-out wires are held in position in stepped grooves formed in a strip perpendicular to the spool flange, the narrowest portion of each groove being disposed between the connector and the insulation of the lead-out wire and containing the conductor of said lead-out wire.
Claim 12
Dependent Claim
98 words
Solenoid valve according to claim 3, characterised in that when said case and core are assembled a welding electrode disposed within the case for delivering welding current just under the welding lugs comprises an external shoulder for centering said electrode in the case along a relatively short length on the side of the major aperture, and that an internal insulating centering member is adapted to penetrate by means of a stud into the central passage of said core, the two inner and outer centering portions lying substantially at a same level perpendicular to the axis of the device.
Claim 13
Dependent Claim
92 words
Solenoid valve according to claim 2, characterised in that during the assembling of the ball with the core an insulating centering member penetrating through the guide member is formed on the one hand with a shoulder urged by a spring associated with said welding electrode against the flat outer face of said guide member and on the other hand with a stud engaging said central passage of said core, said electrode being of the swivel type whereas a counter-electrode is pressed, as close as possible, against the outer surface of said case.
Claim 14
Dependent Claim
80 words
Solenoid valve according to claim 3, characterised in that a diametral strip of sheet metal constitutes the means for preventing the ball valve from escaping in the open valve position, said strip having formed at its ends welding lugs of conventional type and welded to the ball guide without using a bearing counter-electrode located very close thereto, by using the same electrodes and the same welding current and pressure as those required for welding the ball guide to the case.
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US3107893A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |