Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
224 words
A check valve construction comprising cylinder means defining a primary side inlet chamber and a secondary side outlet chamber, an inlet fitting defining an inlet passage connected to said primary side inlet cHamber, an outlet fitting defining a secondary outlet passage and being connected to said secondary side outlet chamber, a sleeve member movable in said inlet chamber and having an inlet opening at its one end for communicating with said inlet fitting inlet passage and a poppet portion movable therewith and defining a flow passage therethrough, a nozzle member defining a passage therethrough extending between said inlet chamber and said outlet chamber and being arranged in said outlet chamber in spaced location from the interior walls thereof to define an annular passage there around, an annular packing disposed in said annular passage and having portions engageable with respective wall of said nozzle member interior of said outlet chamber but being releaseable therefrom in a direction of said outlet upon build up of pressure, said annular passage communicating downstream of said packing with said outlet passage, spring means in said inlet chamber urging said sleeve member with said poppet portion in a direction away from said nozzle to fully open the passage through said nozzle, and means for moving said sleeve member against the force of said spring means to close the nozzle passage.
Claim 2
Dependent Claim
224 words
A check valve construction comprising cylinder means defining a primary side inlet chamber and a secondary side outlet chamber, an inlet fitting defining an inlet passage connected to said primary side inlet cHamber, an outlet fitting defining a secondary outlet passage and being connected to said secondary side outlet chamber, a sleeve member movable in said inlet chamber and having an inlet opening at its one end for communicating with said inlet fitting inlet passage and a poppet portion movable therewith and defining a flow passage therethrough, a nozzle member defining a passage therethrough extending between said inlet chamber and said outlet chamber and being arranged in said outlet chamber in spaced location from the interior walls thereof to define an annular passage there around, an annular packing disposed in said annular passage and having portions engageable with respective wall of said nozzle member interior of said outlet chamber but being releaseable therefrom in a direction of said outlet upon build up of pressure, said annular passage communicating downstream of said packing with said outlet passage, spring means in said inlet chamber urging said sleeve member with said poppet portion in a direction away from said nozzle to fully open the passage through said nozzle, and means for moving said sleeve member against the force of said spring means to close the nozzle passage.
Claim 3
Dependent Claim
35 words
A valve, according to claim 1, wherein said means for moving said sleeve member comprises an electromagnetic exciting coil, said sleeve member being of a material attractible by excitation of said coil and movable thereby.
Claim 4
Dependent Claim
35 words
A valve, according to claim 1, including a retaining ring carried by said sleeve member and forming an abutment for said poppet portion, a spring biasing said poppet portion into engagement with said retaining ring.
Claim 5
Dependent Claim
14 words
A valve, according to claim 3, wherein said spring means acts against said ring.
Claim 6
Dependent Claim
79 words
A valve, according to claim 1, including a flange shaped packing member of annular construction overlying said annular packing, said annular packing being of lip-shaped formation, a doubling plate extending across the interior of said cylinder means and separating said inlet chamber from said outlet chamber, said plate having a central passage for the passage of said nozzle member therethrough and at least one additional passage around said nozzle member leading into said annular chamber having said annular packing.
Claim 7
Dependent Claim
36 words
A valve, according to claim 5, wherein said nozzle member includes a small diameter passage portion at the end of said nozzle which projects into said inlet passage and which widens outwardly toward said outlet passage.
Claim 8
Dependent Claim
78 words
A valve, according to claim 2, including a permeable disc disposed at the outlet end of said passage of said nozzle member, a doubling plate disposed between said nozzle member and said outlet fitting and including an annular wall portion forming a seat for said annular packing and having a plurality of openings therethrough including a central opening communicating with the passage of said nozzle and an outer opening communicating with the annular passage containing said annular packing.