초록 ▼

A two-step disconnect hose coupling having a safety vent is disclosed. The coupling features a safety stop and bleed vent combination which restrains the coupling halves and produces a telltale warning before the coupling halves are completely separated. If there is pressure on the hose, the couplin

A two-step disconnect hose coupling having a safety vent is disclosed. The coupling features a safety stop and bleed vent combination which restrains the coupling halves and produces a telltale warning before the coupling halves are completely separated. If there is pressure on the hose, the coupling halves are pushed apart thereby engaging the safety stop and allowing a telltale warning (vent bleed-off) to function. The bleed-off vent is enclosed within the coupling and is shielded by the female member when the coupling is in the safety stop position. Complete disconnection of the hose coupling requires two separate rotational movements of the coupling halves relative to each other, and if there is pressure on the hose, the coupling halves will be pushed apart after completion of the first rotation step and the telltale warning will be produced by high pressure discharge through the vent opening as the coupling halves are pushed apart. In a preferred embodiment, the hose coupling includes a female member having a pair of inwardly directed, oppositely disposed segmental lugs and a male member having first and second pairs of outwardly projecting, oppositely disposed segmental flanges adapted to overlap and slidably engage behind the segmental lugs when the tubular sidewall portion is inserted into the receptacle and the members are rotated relative to each other. The first and second pair of flanges are axially spaced and angularly displaced with respect to each other, and a vent opening is formed in the tubular sidewall portion which is sealed by the female member when the tubular sidewall portion is fully inserted, and which is unsealed to permit fluid discharge into the interior of the receptacle as the tubular sidewall portion is withdrawn from the position of sealing engagement toward the safety stop position.

대표청구항 ▼

A fluid conduit coupling comprising a female member defining a receptacle and a male member having a tubular sidewall portion slidably received in the receptacle and engagable in sealing relation with the female member when inserted therein, said female member having a pair of inwardly directed, opp

A fluid conduit coupling comprising a female member defining a receptacle and a male member having a tubular sidewall portion slidably received in the receptacle and engagable in sealing relation with the female member when inserted therein, said female member having a pair of inwardly directed, oppositely disposed segmental lugs at one end thereof, said segmental lugs being angularly spaced with respect to each other thereby defining a keyway, said tubular sidewall portion having a first pair of outwardly projecting, oppositely disposed segmental flanges for insertion into the keyway and to overlap and slidably engage behind said segmental lugs when said tubular sidewall portion is inserted into the receptacle and said members are rotated relative to each other, a second pair of outwardly projecting oppositely disposed segmental flanges axially spaced and angularly offset with respect to said first flange pair, said second pair of flanges being adapted for insertion into the keyway and to overlap and slidably engage behind said segmental lugs when said male member is inserted further into said receptacle and said members are rotated relative to each other, said female member having a bore communicating with the keyway defining a passage permitting unrestricted axial displacement of said male member and said segmental flanges between a position of sealing engagement and a safety stop position, and the tubular sidewall portion of said male member having a vent opening which is sealed by said female member when said tubular sidewall portion is fully inserted, and which is unsealed to permit fluid discharge into the passage as said tubular sidewall portion is withdrawn from the position of sealing engagement.