Pipe joints or couplings – Essential catch
Patent
1982-06-01
1984-06-12
Scanlan, Jr., Richard J.
Pipe joints or couplings
Essential catch
285238, 285403, 285421, F16L 3700, F16L 3300, F16L 2100, F16L 2500
Patent
active
044537476
ABSTRACT:
Compact, low cost connector system for flexible tubing is adapted to removably connect a length of flexible plastic tubing for rotational but not axial movement to a recessed opening in a body member such as a pneumatic valve, a fitting, or an air cylinder. Preferably, a cylindrical sleeve member having transverse slots extending completely through opposed walls of the member is pre-positioned in a stepped recessed opening in axially spaced relationship with an elastomeric O-ring sealing member. The sleeve member is preferably retained in a fixed relation relative to the body member by a U-shaped clip. When one desires to attach a length of tubing, the U-shaped clip is removed and the tubing is inserted into the sleeve and O-ring such that its tip portion goes beyond the O-ring into a small central recessed aperture formed in the body member. The legs of the U-shaped retaining clip are then pressed through a pair of spaced, axially transverse opening portions in the body member so as to pass through the transverse slots in the sleeve member and into contact with opposed outer wall surfaces of the tubing. The clip legs slightly compress and deform the tubing and have sharp edge portions which slightly cut into it to prevent it from being removed by pulling or by fluid pressure, yet permitting rotation of the tubing relative to the body member.
REFERENCES:
patent: 3538940 (1970-11-01), Graham
patent: 3560027 (1971-02-01), Graham
patent: 3842870 (1974-10-01), Burgess
patent: 3973791 (1976-08-01), Porta et al.
patent: 4021062 (1977-05-01), Mariaulle
patent: 4059295 (1977-11-01), Helm
patent: 4244608 (1981-01-01), Stuemky
IBM Technical Disclosure Bulletin, vol. 20, No. 9, Feb. 1978, pp. 3662, 3663.
Clark Barry L.
Scanlan, Jr. Richard J.
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