A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the diaphragm controls flow into the chambe
A variable device for regulating the outlet pressure of a fluid from a valve body, includes a pressure-sensing chamber having a wall formed by a resilient self-restoring diaphragm which is responsive to pressure in the chamber. A valve element connected to the diaphragm controls flow into the chamber. Increased pressure in the chamber decreases the flow into the chamber and decreasing pressure increases flow whereby fluid flow out from the chamber is maintained at a desired pressure. The outlet pressure is adjusted by deflecting the diaphragm in a direction to open the valve while permitting a section of the diaphragm connected to the valve member to remain responsive to the pressure in the chamber. An adjustment cover is provided to adjustably deflect the diaphragm and includes a catch mechanism to allow adjustment of the fluid outlet pressures and also retain the device at a desired value. An indicator arrangement may be provided to visually indicate the fluid outlet pressure.
대표청구항▼
What is claimed is: 1. A variable pressure regulator device, comprising: a valve body having a fluid inlet, a fluid outlet, a fluid pressure sensing chamber, and a valve seat in fluid communication with said inlet and defining an opening into said chamber, a resilient member forming a wall of said
What is claimed is: 1. A variable pressure regulator device, comprising: a valve body having a fluid inlet, a fluid outlet, a fluid pressure sensing chamber, and a valve seat in fluid communication with said inlet and defining an opening into said chamber, a resilient member forming a wall of said chamber and which is self-restoring; a valve stem extending from said resilient member towards said valve seat; a valve element supported by said valve stem and cooperating with said valve seat, said valve element being located between said valve seat and said inlet; and a fluid outlet pressure adjustment mechanism configured to contact said resilient member and define a portion of said resilient member which is responsive to pressure in said chamber to move said valve stem and said valve element relative to said valve seat between a open and a closed position, said adjustment mechanism comprising a cover defining an annular hand grip portion surrounding an outer periphery of a portion of said valve body and configured to permit said adjustment mechanism to be rotated relative to said valve body by hand to adjust a fluid outlet pressure of said device. 2. The device of claim 1, wherein said resilient member, said valve stem and said valve element are formed as a unitary structure. 3. The device of claim 1, additionally comprising a detent mechanism defining a plurality of angular positions relative to said valve body, said detent mechanism being configured to position said cover in one of said plurality of angular positions. 4. The device of claim 3, wherein said detent mechanism comprises a plurality of recesses defined by one of said valve body and said adjustment mechanism, and at least one projection carried by the other of said valve body and said adjustment mechanism, said at least one projection configured to engage one of said plurality of recesses. 5. The device of claim 4, wherein said at least one projection is biased into engagement with said recess suct that rotation of said cover is inhibited in the absence of rotational torque on said cover and rotation of cover is permitted in response to rotational torque on said cover. 6. The device of claim 5, wherein said recesses are defined by said valve body and said at least one projection is fixed for rotation with said adjustment mechanism, said adjustment mechanism additionally comprising at least one flexible tab portion, wherein said at least one projection is defined by a surface of said flexible tab portion. 7. The device of claim 1, additionally comprising an indicator arrangement configured to relate an angular position of said cover with respect to said valve body to a value of an actual fluid outlet pressure of said device. 8. The device of claim 7, wherein said indicator arrangement comprises a fluid outlet pressure scale on one of said valve body and said cover, and a reference indicator on the other of said valve body and said cover, said reference indicator capable of being aligned with a demarcation of said fluid outlet pressure scale to achieve a desired fluid outlet pressure. 9. The device of claim 8, wherein said fluid outlet pressure scale comprises an index scale and said demarcations correspond to a range of fluid outlet pressures, said reference indicator comprising a view window approximately sized and shaped to display a single demarcation of said index scale. 10. The device of claim 1, wherein said adjustment mechanism includes at least one flexible lock tab, said flexible lock tab defining a lock surface, said valve body including a retaining surface, said lock surface being configured to engage said retaining surface to substantially fix said adjustment mechanism in an axial position with respect to said valve body. 11. The device of claim 10, wherein said retaining surface is an uninterrupted, annular surface defined by said retainer of said valve body.
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이 특허에 인용된 특허 (12)
Otteman John H. (4005 Hecker Pass Hwy. Gilroy CA 95020), Fluid pressure regulator.
Gidney Larry Dean (McKinney TX) Foust Gregory Lawrence (Richardson TX), Fluid pressure regulator with boost tube unit including stem guide and lever retainer.
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