IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0776267
(2010-05-07)
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등록번호 |
US-8381758
(2013-02-26)
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발명자
/ 주소 |
- Newman, Shmuel Dovid
- Brown, Jeff
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출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
11 |
초록
▼
A safety relief fill valve adapted to being an interface for filling and relieving excess pressure from a closed fluid system. An insert shell retains a piston member for movement between fluid input and fluid holding configurations, the piston member being resiliently biased toward fluid holding co
A safety relief fill valve adapted to being an interface for filling and relieving excess pressure from a closed fluid system. An insert shell retains a piston member for movement between fluid input and fluid holding configurations, the piston member being resiliently biased toward fluid holding configuration. When in fluid holding configuration, the piston member sealingly engages an inlet bore of the insert shell. When in fluid input configuration, the piston member allows fluid flow through the inlet bore. A housing receives the insert shell, thereby limiting relative axial movement and forming a cavity between a portion of the housing the insert shell. This cavity provides mechanical guidance and a flow channel for an overpressure relief system having fluid retaining and fluid relief configurations, the overpressure relief system being elastically biased toward fluid retaining configuration. The elastic bias is overcome responsive to excess pressure within the closed fluid system.
대표청구항
▼
1. A safety relief fill valve assembly adapted to being an interface for filling and relieving excess pressure from a closed fluid system, said safety relief fill valve assembly comprising: a piston member;an insert shell having a first end, a second end, an inlet bore extending therebetween, an upp
1. A safety relief fill valve assembly adapted to being an interface for filling and relieving excess pressure from a closed fluid system, said safety relief fill valve assembly comprising: a piston member;an insert shell having a first end, a second end, an inlet bore extending therebetween, an upper segment adjacent said second end, a lower segment adjacent said first end, a middle segment disposed between said upper and lower segments, and a detent shoulder disposed between said lower segment and said middle segment, said inlet bore adapted to retain said piston member therewithin for movement between fluid input and fluid holding configurations, said piston member adapted to seal said inlet bore when in said fluid holding configuration, and to allow fluid flow through said inlet bore when in said fluid input configuration, said piston member being resiliently biased toward said fluid holding configuration, said resilient bias adapted to being overcome responsive to a predetermined level of mechanical force applied to said piston member;a housing having a proximal end, a distal end, a main bore extending therebetween and at least a relief port, said main bore adapted to receive said insert shell therewithin such that said upper segment is sealingly received within said main bore; andan overpressure relief system adapted to having fluid retaining and fluid relief configurations, said proximal end adapted to being in fluid communication with said relief port when said overpressure relief system is in said fluid relief configuration, said overpressure relief system being elastically biased toward said fluid retaining configuration, said elastic bias adapted to being overcome responsive to said excess pressure, said overpressure relief system including a relief seal member actuatably received between said insert shell and said housing, said relief seal member being capable of establishing a fluid seal between said housing and said insert shell when said overpressure relief system is in said fluid retaining configuration, said elastic bias being provided by a main spring, said main spring being adapted to being actuatably received within said main bore and generally around said insert shell, said detent shoulder being adapted to limit movement of said relief seal member toward said second end. 2. The safety relief fill valve assembly as defined in claim 1 in which said resilient bias is provided by a piston spring, said piston spring adapted to being positioned generally around said piston member. 3. The safety relief fill valve assembly as defined in claim 1 further comprising an o-ring and a retention sleeve, said o-ring adapted to be receivingly engaged by said inlet bore and to removably snugly receive therethrough an input nozzle of a source of pressurized fluid for establishing a fluid seal between said inlet bore and said nozzle, said retention sleeve adapted to being fixedly engaged with said insert shell. 4. The safety relief fill valve assembly as defined in claim 1 in which said piston member includes a stem segment, a hold side segment, a detent cap, and a piston seal, said hold side segment being adjacent a first piston end, said detent cap being adjacent a second piston end, said stem segment being disposed between said hold side segment and said detent cap, said stem segment and said hold side segment adapted to being secured in mating engagement, said piston seal being disposed approximately between said stem segment and said hold side segment, said piston seal being adapted to establish a fluid seal between approximately said insert shell and said inlet bore when said piston member is in said fluid holding configuration. 5. The safety relief fill valve assembly as defined in claim 1 in which said housing further has a proximal portion adjacent said proximal end, said proximal portion adapted to being threadably received by said closed fluid system. 6. The safety relief fill valve assembly as defined in claim 1 in which said relief port is adapted to releasing overpressurized fluid from said main bore in a direction approximately radial of said main bore. 7. The safety relief fill valve assembly as defined in claim 1 in which said relief seal member includes a seal portion and a slip form portion, said slip form portion adapted to securedly engage said seal portion and be substantially axially disposed between said seal portion and said main spring. 8. A safety relief fill valve assembly adapted to being an interface for filling and relieving excess pressure from a closed fluid system, said safety relief fill valve assembly comprising: a piston member;an insert shell having a first end, a second end, an inlet bore extending therebetween, and a detent shoulder, said inlet bore adapted to retain said piston member therewithin for movement between fluid input and fluid holding configurations, said piston member adapted to seal said inlet bore when in said fluid holding configuration, and to allow fluid flow through said inlet bore when in said fluid input configuration, said piston member being resiliently biased toward said fluid holding configuration, said resilient bias adapted to being overcome responsive to a predetermined level of mechanical force applied to said piston member;a housing having a proximal end, a distal end, a main bore extending therebetween and at least a relief port, said main bore adapted to receive said insert shell therewithin;an overpressure relief system adapted to having fluid retaining and fluid relief configurations, said proximal end adapted to being in fluid communication with said relief port when said overpressure relief system is in said fluid relief configuration, said overpressure relief system being elastically biased toward said fluid retaining configuration, said elastic bias adapted to being overcome responsive to said excess pressure, said overpressure relief system including a relief seal member actuatably received between said insert shell and said housing approximately adjacent said proximal end, said relief seal member being capable of establishing a fluid seal between said housing and said insert shell when said overpressure relief system is in said fluid retaining configuration; anda main spring providing said elastic bias, said main spring adapted to being actuatably received within said main bore and generally around said insert shell, said relief seal member including a seal portion and a slip form portion, said slip form portion adapted to securedly engage said seal portion and be substantially axially disposed between said seal portion and said main spring, said detent shoulder being adapted to limit movement of said relief seal member toward said second end. 9. The safety relief fill valve assembly as defined in claim 8 in which said resilient bias is provided by a piston spring, said piston spring adapted to being positioned generally around said piston member. 10. The safety relief fill valve assembly as defined in claim 8 further comprising an o-ring and a retention sleeve, said o-ring adapted to be receivingly engaged by said inlet bore and to removably snugly receive therethrough an input nozzle of a source of pressurized fluid for establishing a fluid seal between said inlet bore and said nozzle, said retention sleeve adapted to being fixedly engaged with said insert shell. 11. The safety relief fill valve assembly as defined in claim 8 in which said piston member includes a stem segment, a hold side segment, a detent cap and a piston seal, said hold side segment being adjacent said first piston end, said detent cap being adjacent said second piston end, said stem segment being disposed between said hold side segment and said detent cap, said stem segment and said hold side segment adapted to being secured in mating engagement, said piston seal being disposed approximately between said stem segment and said hold side segment, said piston seal being adapted to establish a fluid seal between approximately said insert shell and said inlet bore when said piston member is in said fluid holding configuration. 12. The safety relief fill valve assembly as defined in claim 8 in which said housing further has a proximal portion adjacent said proximal end, said proximal portion adapted to being threadably received by said closed fluid system. 13. The safety relief fill valve assembly as defined in claim 8 in which said relief port is adapted to releasing overpressurized fluid from said main bore in a direction approximately radial of said main bore. 14. A safety relief fill valve assembly adapted to being an interface for filling and relieving excess pressure from a closed fluid system, said safety relief fill valve assembly comprising: a piston member;an insert shell having a first end, a second end, and an inlet bore extending therebetween, said inlet bore adapted to retain said piston member therewithin for movement between fluid input and fluid holding configurations, said piston member adapted to seal said inlet bore when in said fluid holding configuration, and to allow fluid flow through said inlet bore when in said fluid input configuration, said piston member being resiliently biased toward said fluid holding configuration, said resilient bias adapted to being overcome responsive to a predetermined level of mechanical force applied to said piston member;a housing having a proximal end, a distal end, a main bore extending therebetween and at least a relief port, said main bore adapted to receive said insert shell therewithin;an overpressure relief system adapted to having fluid retaining and fluid relief configurations, said proximal end adapted to being in fluid communication with said relief port when said overpressure relief system is in said fluid relief configuration, said overpressure relief system being elastically biased toward said fluid retaining configuration, said elastic bias adapted to being overcome responsive to said excess pressure; andan o-ring and a retention sleeve, said o-ring adapted to be receivingly engaged by said inlet bore, and to removably receive therethrough an input nozzle of a source of pressurized fluid for establishing a fluid seal between said inlet bore and said nozzle, said retention sleeve adapted to being fixedly engaged with said insert shell for limiting the axial movement of said o-ring within said input bore;wherein said insert shell includes a detent shoulder and said overpressure relief system includes a relief seal member actuatably received between said insert shell and said housing, said relief seal member being capable of establishing a fluid seal between said housing and said insert shell when said overpressure relief system is in said fluid retaining configuration, said elastic bias being provided by a main spring, said main spring being adapted to being actuatably received within said main bore and generally around said insert shell, said detent shoulder being adapted to limit movement of said relief seal member toward said second end. 15. The safety relief fill valve assembly as defined in claim 14 in which said relief seal member includes a seal portion and a slip form portion, said slip form portion adapted to securedly engage said seal portion and be substantially axially disposed between said seal portion and said main spring. 16. A safety relief fill valve assembly adapted to being an interface for filling and relieving excess pressure from a closed fluid system, said safety relief fill valve assembly comprising: a piston member;an insert shell having a first end, a second end, and an inlet bore extending therebetween, said inlet bore adapted to retain said piston member therewithin for movement between fluid input and fluid holding configurations, said piston member adapted to seal said inlet bore when in said fluid holding configuration, and to allow fluid flow through said inlet bore when in said fluid input configuration, said piston member being resiliently biased toward said fluid holding configuration, said resilient bias adapted to being overcome responsive to a predetermined level of mechanical force applied to said piston member;a housing having a proximal end, a distal end, a main bore extending therebetween, a proximal portion adjacent said proximal end and at least a relief port, said proximal portion being adapted to be received by said closed fluid system, said main bore adapted to receive said insert shell therewithin such that said insert shell extends within said proximal portion, said piston member protruding externally beyond said proximal portion; andan overpressure relief system adapted to having fluid retaining and fluid relief configurations, said proximal end adapted to being in fluid communication with said relief port when said overpressure relief system is in said fluid relief configuration, said overpressure relief system being elastically biased toward said fluid retaining configuration, said elastic bias adapted to being overcome responsive to said excess pressure;wherein said overpressure relief system includes a relief seal member actuatably received between said insert shell and said housing, said relief seal member being capable of establishing a fluid seal between said housing and said insert shell when said overpressure relief system is in said fluid retaining configuration, said elastic bias being provided by a main spring, said main spring being adapted to being actuatably received within said main bore and generally around said insert shell.
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