Pipe joints or couplings – With means blocking release of holding means – Auxiliary latch
Patent
1994-07-21
1995-07-25
Nicholson, Eric K.
Pipe joints or couplings
With means blocking release of holding means
Auxiliary latch
285312, 285 85, F16L 5500
Patent
active
054356040
ABSTRACT:
A tube connecting device includes a first tubular connector and a second tubular connector which extends into the first connector and which is formed with an annular peripheral groove that is registered with a pair of radial openings in the first connector. A press arm has one end mounted pivotally to the first connector adjacent to each radial opening and formed with a cam face. Each press arm is formed with a positioning seat in which a positioning rod is provided slidably and is pivotable to a locking position so that the cam face thereof extends into the groove via the respective radial opening. A retaining seat is disposed below each radial opening and is formed with a vertical through-hole into which a first end portion of the positioning rod is biased to extend when the press arm is in the locking position. A locating projection is disposed immediately below each retaining seat. The positioning seat abuts against the respective locating projection when the respective press arm is in the locking position. A pair of guard plates are located on two sides of each retaining seat and each locating projection. Each pair of guard plates cover two sides of a corresponding press arm when the corresponding press arm is in the locking position.
REFERENCES:
patent: 3439942 (1967-04-01), Moore et al.
patent: 4222593 (1980-09-01), Lauffenburger
patent: 4295670 (1981-10-01), Goodall et al.
patent: 4647075 (1987-03-01), Vargo
patent: 4691942 (1987-09-01), Ford
patent: 4871195 (1989-10-01), Parrish
patent: 5295717 (1994-03-01), Chen
patent: 5338069 (1994-08-01), McCarthy
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