초록 ▼

A gas pressure regulator comprising a body member which mounts a valve between the inlet and outlet gas passages, and which also includes a tubular sleeve which communicates with the outlet passage. A pressure adjusting cap is threadedly mounted to the tubular sleeve. A slidable piston is housed wit

A gas pressure regulator comprising a body member which mounts a valve between the inlet and outlet gas passages, and which also includes a tubular sleeve which communicates with the outlet passage. A pressure adjusting cap is threadedly mounted to the tubular sleeve. A slidable piston is housed within the tubular sleeve and serves to adjust the opening of the valve, and the movement of the piston is guided by a bore in the cap, so as to preclude tilting or jamming of the piston. The cap also includes an outer sleeve which is coaxially outside the tubular sleeve of the body member, so as to facilitate manual rotation of the cap to adjust the valve opening.

대표청구항 ▼

A gas pressure regulator comprising: a body member which includes an inlet passage, an outlet passage, and a tubular sleeve which communicates with said outlet passage, and with said tubular sleeve defining a central axis and including an outer portion which is internally threaded and an inner porti

A gas pressure regulator comprising: a body member which includes an inlet passage, an outlet passage, and a tubular sleeve which communicates with said outlet passage, and with said tubular sleeve defining a central axis and including an outer portion which is internally threaded and an inner portion which defines an internal cylindrical wall surface, a valve positioned in said body member between said inlet passage and said outlet passage so as to permit controlled gas flow therebetween, said valve including a fixed valve seat, a valve pin which is slidable along said central axis between an open position separated from the valve seat and a closed position closing the valve seat, and a valve closing spring for biasing said valve pin toward said closed position, a pressure adjusting cap comprising an externally threaded cylindrical core which is threadedly mounted in said outer portion of said tubular sleeve of said body member and which defines a transverse front end face, said cap further comprising an outer sleeve which coaxially surrounds said core in a spaced apart relation so as to define an annular cavity therebetween so that a portion of said tubular sleeve of said body member is received in said annular cavity, and wherein said cap further comprises a central bore which is coaxially aligned with said central axis and communicates with said front end face, a piston coaxially mounted within said tubular sleeve so as to slideably and sealably engage the internal cylindrical wall surface of the tubular sleeve, said piston including a stem which extends along said central axis and into said central bore of said cap, with said stem being sized so as to be closely but slideably received in said central bore to thereby guide the axial movement of the piston, means for venting the central bore to the atmosphere, spring biasing means extending between said transverse front end face of said core of said cap and said piston, and so as to bias said piston axially toward and into contact with said valve pin and thereby bias the valve pin against the force of said valve closing spring and toward said open position, and such that the cap may be easily rotated by manually gripping the outer sleeve of the cap and wherein rotation of said cap serves to adjust the force of the piston acting on said valve pin and thus the extent to which the valve is opened; and interengaging means mounted on said outer sleeve of said cap and on said outer portion of said tubular sleeve of said body member, for precluding the cap from being totally unthreaded from said body member.