Pipe joints or couplings – Identical halves – Longitudinal port
Patent
1994-02-22
1995-02-14
Nicholson, Eric K.
Pipe joints or couplings
Identical halves
Longitudinal port
285 69, 285 76, 285 82, F16L 3500, B60D 108
Patent
active
053888642
ABSTRACT:
A coupling member for detachably connecting together two sections of air brake hose between railroad cars. Each coupling member has a hollow tubular body with one end attached to a section of hose and with an opposite end having an arcuate body portion extending circumferentially about and outwardly of the tubular body, and has an arcuate locking lug extending generally axially from the body concentric with the arcuate body portion. An L-shaped arcuate flange projects outwardly and forwardly from a rear portion of the tubular body and is provided with a lip which engages a similar lip formed on the arcuate locking lug of the other of two coupling members to secure the members in coupled position. An elastomeric gasket is mounted within the bore of the tubular body and forms an airtight seal with a similar gasket mounted on the other coupling member. A finger is pivotally mounted within a radially extending slot formed in an arcuate end body portion of the tubular body. The finger has a bent outer end which traps a corner of the L-shaped arcuate flange of an opposite coupling member upon the two members being rotated toward the uncoupled position but prior to reaching this position. The locking finger is provided with a positive retention mechanism for retaining the finger in the unlocked position to avoid interference with the coupling members when the members are joined and rotated to the joined position. The bent end of the locking finger provides a positive mechanical lock to prevent premature rotational uncoupling of the joined members.
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