A coupler comprising a female coupling member and a male coupling member adapted to be fitted therein for coupling air conduits of two systems, i.e., an air pressure supply system and a control system thereof, wherein the coupling members have openings of a first and a second air conduit, respectively, at respective central portions of the mating faces and annular grooves concentric with and outer than the respective openings; third and fourth air conduits open at the respective grooves; the openings of the first and the second air conduit are connected with each other; an o-ring is disposed at the connecting portion between sidewalls of the respective openings; the annular grooves of the respective coupling members are engaged with each other; a second o-ring is disposed at the engaging portion of outer walls of the respective grooves; and the engaging portion of the inner walls of the grooves are air-tightly sealed by the first o-ring.
A coupling mechanism for coupling a plurality of fluid and electrical lines between adjacent coupled vehicles wherein a plurality of elongated flexible fluid lines and electrical lines are grouped together to form a single elongated flexible group line with one end of the group line connected to respective fluid and electrical sources on one vehicle and the other end of the group line connected to respective fluid and electrical loads on the other vehicle through a single hybrid or combination fluid and electrical plug and socket arrangement. The plug and socket arrangement is comprised of a mounting bracket for the plug and a mounting bracket for the socket, one of which is secured to the second vehicle. The mounting brackets are adapted such that one bracket is readily hung on the other bracket and thereby automatically prealigns the plug and socket for engagement. After this self-prealigning engagement is accomplished a lever mechanism or the like is provided which engages the plug and socket together when actuated in a locked coupling position.
A device for mounting on the rear wall of a truck tractor including a housing and a lamp pivotally mounted on the housing, for illuminating a working area between the tractor and a trailer during hookup or to provide an additional safety warning light behind the tractor. The housing contains a receptacle and a pair of glad hand brackets mounted on side walls of the housing for retaining the plug end of an electrical power cord and the coupling ends of a pair of air pressure lines, respectively, when disconnected from the trailer. One of the male prongs of the receptacle is electrically connected to a switch mounted within the cab of the tractor for illuminating the lamp. This switch normally actuates one of the trailer accessories, such as its marking light, when the power cord is connected to the trailer.
A plug and socket type electrical connector is provided with a cover assembly for protecting connector structure from the elements and structure for facilitating the selective electrical engagement and disengagement of the connector elements, preferably by providing cooperating locking elements on the cover assembly and the electrical plug as well as a rotary lever assembly which is operable to effect plug disengagement.
A piping for control/drive medium of an industrial robot having at least one robot arm, which is to be supplied from a main body of the robot to a hand device thereof, is composed of a plurality of pipe segments adjacent ones of which are connected by a rotary joint disposed on a joint portion of the robot arm, with a rotary axis of the rotary joint being aligned with a rotary center of the joint portion.
