US4549467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuator valve
Assignee: PSG California LLC
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Filing: 1983-08-03
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Granted: 1985-10-29
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Expires: 2003-08-03
Abstract
Abstract An air driven diaphragm pump having an actuator valve for converting a source of compressed air into a reciprocating drive. The actuator valve includes a valve piston for alternately directing air to one side or the other of the pumps, a control rod fixed to the reciprocating elements of the pump and means for shifting the valve piston responsive to the position of the control rod. An axially spaced bifurcated inlet is employed to provide additional energy to the shifting of the valve piston. The valve piston also is arranged to cover vent ports as a mechanism for closing off all compressed air under stalled conditions of the pump.
Inventors
- 👤 James K. Wilden
- 👤 Alan D. Tuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:31
CPC Classifications
F; F04; F04B; F04B43/00; F04B43/02; F04B43/06; F04B43/073; F04B43/0736; F01; F01L; F01L5/00; F01L5/04; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
191 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, a passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway extending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means.
Claim 2
Dependent Claim
191 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, a passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway extending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means.
Claim 3
Dependent Claim
210 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway extending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder and two inlet passages extending to said two ports, said inlet passages being inclined to mutually diverge toward said ports, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means.
Claim 4
Dependent Claim
210 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway extending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder and two inlet passages extending to said two ports, said inlet passages being inclined to mutually diverge toward said ports, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means.
Claim 5
Dependent Claim
222 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage, said transverse passage being a circumferential groove about said valve piston; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, a passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway entending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder and two inlet passages extending to said two ports, said inlet passages being inclined to mutually diverge toward said ports, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means.
Claim 6
Dependent Claim
222 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage, said transverse passage being a circumferential groove about said valve piston; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, a passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway entending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder and two inlet passages extending to said two ports, said inlet passages being inclined to mutually diverge toward said ports, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means.
Claim 7
Dependent Claim
206 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, a passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway extending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means, said axially spaced ports being separated by at least the width of said transverse passage.
Claim 8
Dependent Claim
206 words
An actuator valve for an air driven reciprocating device, in combination comprising a valve piston having a single transverse passage; a control rod fixed to reciprocate with the air driven reciprocating device; a housing having a cylinder closed at each end and enclosing said valve piston, a passageway through which said control rod extends, an air inlet to said cylinder spaced from the ends of said cylinder, valve piston vent passages extending from said cylinder to said passageway, and control rod vent passage means for venting said passageway extending from said passageway to atmosphere, said valve piston cooperating with said housing to include means for directing incoming air to the ends of said valve piston and means for selectively directing incoming air to and exhausting outgoing air from the air driven reciprocating device, said air inlet including two ports axially spaced at said cylinder, said ports selectively aligning with said transverse passage when said piston is at the ends of said cylinder and said control rod including at least one axial passage in said control rod to cooperate with said valve piston vent passages and said control rod vent passage means, said axially spaced ports being separated by at least the width of said transverse passage.
References Cited (Backward Citations)
US1058804A
Cited
US2528097A
Cited
US2890658A
Cited
US4085655A
Cited
US4242941A
Cited
US4339985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |