US4509716A — Electromagnetically operated hydraulic valve devi…

Claim 1

Independent Claim 255 words

A fast response electromagnetic hydraulic valve device, comprising a housing having a plurality of longitudinal openings disposed therein and a bushing disposed at one end thereof, a core providing end closure means for an end of said housing oppositely disposed from said bushing, said core including a longitudinal core post projecting inwardly of said housing and having an opening in said post, a bobbin having a central opening therein receiving said post, winding means supported by said bobbin and circumposing said core post, an armature movable longitudinally within said housing with one end received in the central opening of said bobbin and the other end disposed within the bushing, the one end of the armature having an opening disposed opposite the post opening, resilient means received by the post and armature openings, sleeve means disposed between said bushing and the other end of the armature and providing a constant cross section nonmagnetizable gap between said armature and bushing, an outer valve casing secured over said bushing and having an interior cavity with a circumferential groove disposed about the cavity, an inner valve casing disposed within said interior cavity and a circumferential boss received by said circumferential groove to provide a snap-together engagement of the valve casings, a valve cavity disposed between the inner and outer valve casings, a valve member disposed within the valve cavity, and a free-floating drive pin engaging said valve member and the armature, whereby said winding means is energizable to effect almost instantaneous displacement of said armature and associated drive pin.

Claim 2

Dependent Claim 255 words

A fast response electromagnetic hydraulic valve device, comprising a housing having a plurality of longitudinal openings disposed therein and a bushing disposed at one end thereof, a core providing end closure means for an end of said housing oppositely disposed from said bushing, said core including a longitudinal core post projecting inwardly of said housing and having an opening in said post, a bobbin having a central opening therein receiving said post, winding means supported by said bobbin and circumposing said core post, an armature movable longitudinally within said housing with one end received in the central opening of said bobbin and the other end disposed within the bushing, the one end of the armature having an opening disposed opposite the post opening, resilient means received by the post and armature openings, sleeve means disposed between said bushing and the other end of the armature and providing a constant cross section nonmagnetizable gap between said armature and bushing, an outer valve casing secured over said bushing and having an interior cavity with a circumferential groove disposed about the cavity, an inner valve casing disposed within said interior cavity and a circumferential boss received by said circumferential groove to provide a snap-together engagement of the valve casings, a valve cavity disposed between the inner and outer valve casings, a valve member disposed within the valve cavity, and a free-floating drive pin engaging said valve member and the armature, whereby said winding means is energizable to effect almost instantaneous displacement of said armature and associated drive pin.

Claim 3

Dependent Claim 24 words

The valve device in accordance with claim 1, further comprising slot means disposed in said armature and housing in order to prevent fluid lock-up.

Claim 4

Dependent Claim 28 words

The valve device in accordance with claim 1, wherein said sleeve means is force fitted about an end of said armature and moves therewith relative to said bushing.

Claim 5

Dependent Claim 37 words

The valve device in accordance with claim 1, further comprising seal means disposed about the exterior of said outer valve casing for providing a seal between said hydraulic valve device and an opening in a transmission apparatus.

Claim 6

Dependent Claim 24 words

The valve device in accordance with claim 1, wherein said resilient means comprises a spring with a predetermined response rate for effecting said response.

Claim 7

Dependent Claim 21 words

The valve device in accordance with claim 1, wherein energization of said winding effects retraction of said armature towards said post.

Claim 8

Dependent Claim 22 words

The valve device in accordance with claim 1, further comprising a gap between said armature and post, and circumposed by said winding.

Claim 9

Dependent Claim 46 words

The valve device in accordance with claim 1, wherein the cumulative confronting areas of the bushing, sleeve and other end of said armature are substantially larger than the area between the one end of said armature and post, in order to effect a fast response time.

Claim 10

Dependent Claim 24 words

The valve device in accordance with claim 1, wherein said longitudinal openings in said housing are of sufficient size to substantially eliminate eddy currents.

Claim 11

Dependent Claim 232 words

A process for providing almost instantaneously responsive operation of a hydraulic valve by means of an electromagnetic hydraulic valve device, said device comprising a housing having disposed therein a bobbin supporting winding means and with a centrally disposed opening in said bobbin, a core member enclosing an end of said housing and having a post projecting longitudinally into said bobbin opening, an armature having one end received in the bobbin opening and the other end received within a housing bushing, and inner and outer valve casings at an end of the housing and about said bushing, comprising the steps of (a) disposing resilient means between said post and armature, (b) placing a ball valve member within valve cavity means disposed between said inner and outer valve casing, (d) fixing said inner valve casing within a cavity of said outer casing by engaging a peripheral boss about said inner valve casing with a complementary shaped groove disposed about said cavity to provide an interlocking, leak resistant securement of said inner and outer valve casings whereby said ball valve member is captured therebetween, (d) and securing said outer valve casing to said housing with a drive pin member positioned between said ball valve member and the armature whereby energization of said winding means effects substantially instantaneous displacement of said armature to effect movement of said ball valve member relative to said valve cavity means.

Claim 12

Dependent Claim 232 words

A process for providing almost instantaneously responsive operation of a hydraulic valve by means of an electromagnetic hydraulic valve device, said device comprising a housing having disposed therein a bobbin supporting winding means and with a centrally disposed opening in said bobbin, a core member enclosing an end of said housing and having a post projecting longitudinally into said bobbin opening, an armature having one end received in the bobbin opening and the other end received within a housing bushing, and inner and outer valve casings at an end of the housing and about said bushing, comprising the steps of (a) disposing resilient means between said post and armature, (b) placing a ball valve member within valve cavity means disposed between said inner and outer valve casing, (d) fixing said inner valve casing within a cavity of said outer casing by engaging a peripheral boss about said inner valve casing with a complementary shaped groove disposed about said cavity to provide an interlocking, leak resistant securement of said inner and outer valve casings whereby said ball valve member is captured therebetween, (d) and securing said outer valve casing to said housing with a drive pin member positioned between said ball valve member and the armature whereby energization of said winding means effects substantially instantaneous displacement of said armature to effect movement of said ball valve member relative to said valve cavity means.

Claim 13

Dependent Claim 35 words

The process in accordance with claim 10, further comprising the step of providing nonmagnetic sleeve means about the other end of said armature whereby said sleeve means moves with said armature relative to said bushing.

Claim 14

Dependent Claim 23 words

The process in accordance with claim 10, wherein said step of energizing the winding means effects retraction of said armature towards said post.

Claim 15

Dependent Claim 47 words

The process in accordance with claim 10, further comprising the step of providing a valve device with the cumulative confronting areas of the bushing, sleeve and other end of said armature being substantially larger than the area between the one end of said armature and the post.

Claim 16

Dependent Claim 28 words

The process in accordance with claim 10, further comprising the step of providing longitudinal openings in said housing in order to substantially eliminate the effects of eddy currents.

Claim 17

Dependent Claim 30 words

The process in accordance with claim 10, further comprising the step of providing longitudinal opening means in said armature in order to substantially eliminate eddy currents and preclude fluid lock-up.

Claim 18

Dependent Claim 200 words

A high speed electromagnetic hydraulic valve device, comprising a generally cylindrical housing having a bushing disposed at one end thereof, a core including a longitudinal core post projecting inwardly of said housing, a bobbin having a central opening therein receiving said post, winding means supported by said bobbin and circumposing said core post, and armature movable longitudinally within said housing and one end of said armature disposed opposite the post, resilient means disposed between said post and said armature, sleeve means disposed between said armature and said housing in order to provide a constant cross section nonmagnetizable gap, an outer valve casing secured to said housing and having an interior cavity with a circumferential groove disposed about the interior cavity, an inner valve casing disposed within said interior cavity and having a circumferential boss received by said circumferential groove to provide a leak resistant, snap-together engagement of the valve casings, a valve cavity disposed between the inner and outer valve casings, a valve member disposed within the valve cavity, and a free-floating drive pin located between said valve member and the armature, whereby said winding means is energizable to effect almost instantaneous displacement of said armature and associated drive pin.

Claim 19

Dependent Claim 200 words

A high speed electromagnetic hydraulic valve device, comprising a generally cylindrical housing having a bushing disposed at one end thereof, a core including a longitudinal core post projecting inwardly of said housing, a bobbin having a central opening therein receiving said post, winding means supported by said bobbin and circumposing said core post, and armature movable longitudinally within said housing and one end of said armature disposed opposite the post, resilient means disposed between said post and said armature, sleeve means disposed between said armature and said housing in order to provide a constant cross section nonmagnetizable gap, an outer valve casing secured to said housing and having an interior cavity with a circumferential groove disposed about the interior cavity, an inner valve casing disposed within said interior cavity and having a circumferential boss received by said circumferential groove to provide a leak resistant, snap-together engagement of the valve casings, a valve cavity disposed between the inner and outer valve casings, a valve member disposed within the valve cavity, and a free-floating drive pin located between said valve member and the armature, whereby said winding means is energizable to effect almost instantaneous displacement of said armature and associated drive pin.

Claim 20

Dependent Claim 25 words

The hydraulic valve device in accordance with claim 16, further comprising slot means disposed in said armature and housing in order to prevent fluid lock-up.

Claim 21

Dependent Claim 26 words

The hydraulic valve device in accordance with claim 16, further comprising slot means disposed in said armature and housing in order to substantially eliminate eddy currents.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1988-04-08	1988-10-08	1989-04-09	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1992-04-08	1992-10-08	1993-04-09	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1996-04-08	1996-10-08	1997-04-09	$7700.00	Window Closed / Lapsed

Electromagnetically operated hydraulic valve device with snap-together valve housing

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