Roofing or wall panels are installed and connected together edge-to-edge with the aid of a special mounting clip and a seam strip. The mounting clip is attached to the seam strip and to the supporting structure of the roof, and during installation the seam strip becomes locked to an edge of each of two panels. The mounting clip is a two-piece assembly having a connecting portion adapted to cooperate with a complementary portion of the seam strip, the two-piece construction facilitating connectio...

A tubular anode such as tubular cast iron, magnetite, graphite, carbon or steel may be provided with an easily made internal or center connection having assured uniform resistance characteristics by the employment of at least two diametrically opposed wedge blocks, such blocks having parallel crowned and serrated contact surfaces and a wedge surface interface, such interface including a tongue and slot connection between the blocks, one or both blocks having oppositely extending tubular crimpabl...

The present invention relates to tubular connections for application to heavy wall, high performance casing in high pressure, critical service oil and gas wells. A threaded and coupled tubular connection is provided which comprises a male member and a female member having engageable threads disposed on respective first and second substantially matching tapers of about 1.750 inches per foot on the diameter. This taper provides increased female member wall thickness at the narrow end of the female...

A first pipe is connected to the wall of a container such as a larger pipe, tank or other vessel, wherein the transverse surface of one end of the first pipe is substantially flush with the inside surface of the portion of the wall of the container to which the first pipe is connected. The method for forming the pipe connection relies upon the plastic memory of the synthetic thermoplastic polymeric material from which the end portion of the first pipe and the portion of the wall of the container...

A pipe joint and threaded pin and box members adapted for use therein are disclosed in which two-stepped thread surfaces are axially separated by dissimilar angled positive angle torque and sealing surfaces and internal and external sealing surfaces are provided on both ends of the threaded surfaces. Protective non-engaging shoulders are provided adjacent the external sealing surfaces. Cooperating end shoulders are provided on the end of the pin member and the interior end of the counterbore of ...

A mechanical connection system comprises a first body 10 defining a receptacle 38 and a second body 12 defining a pin 24 matingly receivable in said receptacle 38 by relative movement in a first directional mode. A primary latch 64 is engagable between the first 10 and second 12 bodies to retain the pin 24 in the receptacle 38, the primary latch 64 being reciprocable in a second directional mode transverse to the first directional mode. A lock member 50 carried by one of the bodies 10 or 12 is o...

A cylinder for a valve actuator wherein the cylinder body has lugs connectable to and disconnectable from like cylinder head lugs by less than one turn rotation. Resilient seals seal the head to the body when connected, and the connection is releasably lockable.

A connector for attaching a central core wire (11) of a flexible cable to a control element (13) has a cable guide (15) attached to the core wire (11). A pivot pin (22) extending through a bore in the cable guide (15) is attached to the control element (13) and has an annular groove (23) in one end. A locking body (24) has a cylindrical section (25) reciprocally mounted on the cable guide (15) and an arm (27) extending forward to engage the groove (23) in the pivot pin (22). A notch (29) at the ...

Connection insulators having a plurality of insulating compartments for electrically isolating electrical connections formed from strips of insulating material of indeterminate length. In one embodiment, a first strip of insulating material is supplied to a securing station at a predetermined average rate of supply and a second strip of insulating material is supplied to a forming station at a predetermined average rate of supply greater than the predetermined average rate of supply of the first...

A cylinder for a valve actuator wherein the cylinder body has lugs connectable to and disconnectable from like cylinder head lugs by less than one turn rotation. Resilient seals seal the head to the body when connected, and the connection is releasably lockable.