×

Gas flow safety assembly

  • US 5,535,777 A
  • Filed: 09/15/1995
  • Issued: 07/16/1996
  • Est. Priority Date: 09/15/1995
  • Status: Expired due to Fees
First Claim
Patent Images

1. A gas flow safety valve assembly comprising:

  • a main housing, said housing being of generally solid, rigid construction and including a main interior chamber,primary flow detection means structured and disposed to detect a gas flow pressure through said main interior chamber of said main housing,said primary flow detection means including a primary diaphragm disposed in said main interior chamber and dividing said main interior chamber into a flow through compartment and an upper compartment,an inlet passage extending from an exterior inlet port formed in an exterior of said main housing to an interior inlet port leading to said flow through compartment of said main interior chamber,an outlet passage extending between an exterior outlet port formed in said exterior of said main housing to an interior outlet port leading to said flow through compartment of said main interior chamber,a lever element disposed in said flow through compartment,said lever element including a first end and a second end,said first end of said lever element being hingedly secured to said main housing, generally near said interior outlet port,a magnetic element disposed in said main housing near said interior inlet port,a contact plate disposed generally at said second end of said lever element in generally overlying relation above said magnetic element,said lever element including a shut off orientation and a flow through orientation, said shut off orientation including said contact plate being securely engaged with said magnetic element and said flow through orientation including said contact plate disposed in spaced apart relation from said magnetic element,a lever biasing element disposed in said main housing and extending into said flow through compartment of said main housing so as to engage said lever element and maintain said lever element normally in said flow through orientation,stopper means included in said lever element and structured to cover said interior outlet port upon said lever element being disposed in said shut off orientation and to expose said interior outlet port upon said lever element being disposed in said flow through orientation,said primary flow detection means further including primary biasing means connected with said primary diaphragm and being moveable between a compressed orientation and a relaxed orientation, said primary biasing means being structured and disposed to be urged into and maintained in said compressed orientation upon said gas pressure within said flow through compartment of said main housing being at or above a predetermined minimum acceptable gas flow pressure which urges said primary diaphragm towards said upper compartment of said main housing,said primary flow detection means also including a primary lever displacement member extending into said flow through compartment, said primary lever displacement member being structured to engage said lever element, so as to overcome said lever biasing element and urge said lever element into said shut off orientation wherein said contact plate is securely engaged with said magnetic element and said stopper means are accordingly disposed in covering relation atop said interior outlet port, upon said primary biasing means moving into said relaxed orientation due to said gas pressure within said flow through compartment of said main housing dropping below said predetermined minimum acceptable gas flow pressure, andreset means structured and disposed to separate said contact plate of said lever element from said magnetic element so as to position said lever element in said flow through orientation only if said gas pressure within said flow through compartment of said main housing is at or above said predetermined minimum acceptable gas flow pressure.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×