US3706325A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simple control valves
Assignee: PAULIUKONIS GRAZINA I
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Filing: 1971-05-21
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Granted: 1972-12-19
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Expires: 1991-05-21
Abstract
Abstract Simple fluid power control valves for use with pneumatic and/or hydraulic pressurized working fluids, of springless valve construction whose central longitudinal bore slidably receives a pin which is permanently secured with appropriate seals to allow it to float axially inside the bore, from a one closed position when the pin end with seal is subjected to the fluid pressure of the working fluid at the infeed valve end, to another open position when the opposing pin end is subjected to an external force which is greater than the fluid pressure end thrust at the infeed pin end, said external force being caused by pin actuation manually, by toggle, hand or foot lever, by a timer cam or by pilot pressure, said pin floating with seals, allowing for fast valve response as a result of short travel designed therein.
Inventors
- 👤 Richard S Pauliukonis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:28
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/04; F16K11/048; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86574; Y10T137/86622; Y10T137/8663; Y10T137/8667; Y10T137/86686
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
430 words
A valve for transmitting pressurized working fluid from a fluid supply to receiver means, such as an actuating power cylinder or a process batch, and for exhausting the transmitted fluid caused by a change of position of the internal valve components which are normally maintained fixed by the forces the working fluid exerts over their surfaces, such position change being the result of the application of an external force, be it manual, by a tripper or a cam of a machine, or by pilot pressure application, and an automatic return of such components to their original positions upon removal of such external forces due to the end thrust of the working fluid designed to maintain internal valve components situated exactly in their original positions without the use of springs but by the action of the working fluid pressure alone unless their positions are disturbed by said external forces, said forces not amounting to too much because the internal forces are small due to the valve design providing effortless valve actuation, comprising a valve housing having an infeed end and a receiver port, a cylindrical axially extending bore, one end of which is enlarged and shouldered, a differential diameter pin slidably received in the housing, and dividing the interior thereof into an infeed chamber for communication with a source of pressurized working fluid, an annular fluid passage means to the receiver port, a receiver exhaust means opposite to the said infeed chamber, a sealing means, said infeed chamber normally sealed from said annular fluid passage means by an elastomer seal permanently secured in an appropriate groove at the end of the smaller diameter of said differential diameter pin and constantly experiencing working fluid pressure in terms of end thrust forcing said seal tightly against said bore end shoulder, said pin having larger diameter shoulder pin portion substantially protruding valve housing end opposite to said infeed end, said pin shoulder having a sealing means for stopping fluid exhaust when the pin is actuated by external means to change its original position and to allow flow from saId infeed chamber to said receiver port, while exhaust port means are kept sealed off externally, said exhaust port means opening into the atmosphere for fluid exhaust from said receiver port upon removal of said external forces due to said working fluid end thrust over the pin end at the infeed port to shift said pin to assume the original position wherein said infeed chamber is normally sealed off from said annular fluid passage means, constituting the normally closed valve position with receiver port to exhaust.
Claim 2
Dependent Claim
430 words
A valve for transmitting pressurized working fluid from a fluid supply to receiver means, such as an actuating power cylinder or a process batch, and for exhausting the transmitted fluid caused by a change of position of the internal valve components which are normally maintained fixed by the forces the working fluid exerts over their surfaces, such position change being the result of the application of an external force, be it manual, by a tripper or a cam of a machine, or by pilot pressure application, and an automatic return of such components to their original positions upon removal of such external forces due to the end thrust of the working fluid designed to maintain internal valve components situated exactly in their original positions without the use of springs but by the action of the working fluid pressure alone unless their positions are disturbed by said external forces, said forces not amounting to too much because the internal forces are small due to the valve design providing effortless valve actuation, comprising a valve housing having an infeed end and a receiver port, a cylindrical axially extending bore, one end of which is enlarged and shouldered, a differential diameter pin slidably received in the housing, and dividing the interior thereof into an infeed chamber for communication with a source of pressurized working fluid, an annular fluid passage means to the receiver port, a receiver exhaust means opposite to the said infeed chamber, a sealing means, said infeed chamber normally sealed from said annular fluid passage means by an elastomer seal permanently secured in an appropriate groove at the end of the smaller diameter of said differential diameter pin and constantly experiencing working fluid pressure in terms of end thrust forcing said seal tightly against said bore end shoulder, said pin having larger diameter shoulder pin portion substantially protruding valve housing end opposite to said infeed end, said pin shoulder having a sealing means for stopping fluid exhaust when the pin is actuated by external means to change its original position and to allow flow from saId infeed chamber to said receiver port, while exhaust port means are kept sealed off externally, said exhaust port means opening into the atmosphere for fluid exhaust from said receiver port upon removal of said external forces due to said working fluid end thrust over the pin end at the infeed port to shift said pin to assume the original position wherein said infeed chamber is normally sealed off from said annular fluid passage means, constituting the normally closed valve position with receiver port to exhaust.
Claim 3
Dependent Claim
99 words
A valve as in the foregoing claim including an axial exhaust passage means opposite to said infeed end via annulus at the larger diameter shouldered pin provided with appropriate sealing means for stopping fluid exhaust by the application of external force, resulting in change of direction of flow from normally closed valve condition to cylinder feed condition while cylinder exhaust is closed, and return to the original valve normally closed condition upon removal of said external force, while the cylinder is to exhaust, typifying an operation of a three-way normally closed directional valve with exhaust through the pin annulus.
Claim 4
Dependent Claim
246 words
A valve as in the foregoing claims including a perpendicularly situated exhaust port substantially in line with the shoulder of larger diameter, situated axially, of differential diameter pin, said larger pin diameter provided with an additional elastomer seal of O-ring or quad-ring configuration secured permanently inside an appropriate groove and situated so that it never crosses said perpendicular exhaust port while serving as separating member means between a valving section of the housing and a pilot actuation section added thereto, said pilot actuation section extending longitudinally the said valve housing of which the infeed end is directly opposite to the pilot entrance port comprising an extension of said cylindrical axially extending housing bore, said pilot entrance port threaded for connecting to the pilot supply line means, said external force provided by the pilot pressure thrust over the larger diameter pin end exposed thereto for shifting of said pin and subsequent change of direction of flow from normally closed valve condition to cylinder feed condition while the exhaust is closed for as long as the pilot pressure exerts said end thrust to the larger diameter pin end within said pilot port, and upon removal of said pilot end thrust through pilot exhaust from said pilot port, a return to the original valve normally closed condition while the cylinder is to exhaust via said perpendicularly situated fluid exhaust from the valving section of the housing, typifying an operation of a three-way normally closed pilot operated directional valve effortlessly.
Claim 5
Dependent Claim
204 words
A valve as in claim 3 excluding a perpendicularly situated exhaust port substantially in line with the shoulder of large diameter of the pin, said larger diameter pin portion provided with additional elastomer seal of O-ring or quand-ring configuration permanently secured inside appropriate groove and situated so as to separate the valving section of the housing from the pilot actuation section added thereto, said valving section having no exhaust port means, said pilot actuation section extending longitudinally the said valve housing of which the infeed end is directly opposite to the pilot entrance port, and comprising an extension of said cylindrical axially extending housing bore, said pilot supply pressure constituting an external force necessary for shifting said pin inside said valving section to open fluid communication means between the infeed port and the receiver port means for a period as long as the external force prevails, and upon removal of said external force, a return to the original valve normally closed condition automatically as a result of the working fluid pressure end thrust over said pin surfaces, typifying an operation of a two-way normally closed pilot operated process control valve effortlessly, and without the use of any springs for The operation of said valve.
Claim 6
Dependent Claim
62 words
A valve as in claim 4 including an extension of the larger diameter pin to protrude outside the valve body opposite the valve infeed end for a manual valve operation in lieu of pilot operation, typifying an operation of a two-way normally closed process control valve actuated by external means be it manual or otherwise applied force to the protruding pin end.
Claim 7
Dependent Claim
200 words
A fluid valve for selectively porting fluid from a source to a load comprising housing means, fluid infeed means, first port means in said housing for receiving fluid under pressure and for its exhaust, second port means for receiving fluid under pressure and for its exhaust, cylindrical axially extending housing bore, valving means in said housing comprising a slidably received differential diameter pin inside said cylindrical housing bore to float by shifting from a first position blocking communication between said first port means which is open to exhaust to the second position for fluid communication between fluid infeed and first port means while second port means are disconnected from the fluid supply means and are open to exhaust, and an automatic return to the original position, said pin shifting inside said cylindrical housing bore performed by external means forcing a change of its natural location as controlled by the working fluid to assume temporarily an opposite position which redirects the flow of the pressurized fluid to feed alternatively the first port means when externally energized, and vice versa, and means for maintaining said valve means in one of said positions without the influence of biasing force on said valve means.
Claim 8
Dependent Claim
200 words
A fluid valve for selectively porting fluid from a source to a load comprising housing means, fluid infeed means, first port means in said housing for receiving fluid under pressure and for its exhaust, second port means for receiving fluid under pressure and for its exhaust, cylindrical axially extending housing bore, valving means in said housing comprising a slidably received differential diameter pin inside said cylindrical housing bore to float by shifting from a first position blocking communication between said first port means which is open to exhaust to the second position for fluid communication between fluid infeed and first port means while second port means are disconnected from the fluid supply means and are open to exhaust, and an automatic return to the original position, said pin shifting inside said cylindrical housing bore performed by external means forcing a change of its natural location as controlled by the working fluid to assume temporarily an opposite position which redirects the flow of the pressurized fluid to feed alternatively the first port means when externally energized, and vice versa, and means for maintaining said valve means in one of said positions without the influence of biasing force on said valve means.
Claim 9
Dependent Claim
100 words
A valve as in the foregoing claims including means for maintaining the valve means in normally closed position and means for changing of said position, said normally closed position attained by the working fluid action in terms of end thrust over the exposed valve means to the pressurized fluid, and said position change attained by shifting the valving means by external means, such external means comprising a force applied to the valving means either by pilot pressure or by physically applying a manual or a machine force larger than the force the working fluid exerts over the valving means internally.
Claim 10
Dependent Claim
71 words
A fluid valve as defined in the foregoing claims wherein the external force means are applied to the pin end larger in diameter than the pin end exposed to the working fluid pressure end thrust with a resultant mechanical advantage incorporated in the operation of the valve during the position change from said normally closed position to other positions wherein said external force may be decreased to balance the valve means.
Claim 11
Dependent Claim
134 words
A pilot operated valve comprising valve housing means, first port means in said housing means adapted to be connected to a source of the working fluid under pressure, second port means in said housing adapted to be connected to a load, exhaust port means, a valve member slidably received inside cylindrical axially extending differential diameter housing bore to shift from a first position blocking communication between the first and second port means to a second position communicating said first and second port means, pilot piston means in said housing means communicating with third port means and connected to shift said valving means from one of said positions to the other of said positions and urging said valve member to said first position, and fluid operable for shifting said valve member to said second position.
Claim 12
Dependent Claim
134 words
A pilot operated valve comprising valve housing means, first port means in said housing means adapted to be connected to a source of the working fluid under pressure, second port means in said housing adapted to be connected to a load, exhaust port means, a valve member slidably received inside cylindrical axially extending differential diameter housing bore to shift from a first position blocking communication between the first and second port means to a second position communicating said first and second port means, pilot piston means in said housing means communicating with third port means and connected to shift said valving means from one of said positions to the other of said positions and urging said valve member to said first position, and fluid operable for shifting said valve member to said second position.
Claim 13
Dependent Claim
47 words
A pilot operated valve as defined in the foregoing claims wherein said valve member is maintained in said first position solely by the pressure of the working fluid, and the second position solely by the relative pressure in said pilot port means and said fluid operable means.
Claim 14
Dependent Claim
55 words
A pilot valve operated as in the foregoing claims including valving means for porting fluid to said fluid operable means, said valving means being in said housing means, said valving means including an axially slidable differential diameter pin having a valving surface at one end and an actuating surface at the other valve housing end.
References Cited (Backward Citations)
US3384122A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |