Meyertech Corporation

Central Sprinkler Corporation

Arne H Hansen

A fitting for connection to a metal plain end pipe includes a generally cylindrical sleeve section sized to receive and cradle a pipe end portion, an annular seal in the sleeve section for forming a liquid tight connection between the pipe end portion and the fitting, and a screw cutter member extensible into the sleeve section for locking the pipe end portion to the fitting. An end surface of the cutter member has an annular ring of projecting cutting elements having intersecting faces forming metal cutting edges, each cutting element being respectively spaced from another cutting element by transverse recesses for relief of chips cut from the pipe. The cutting edges each have a rake angle configuration relative to the pipe end portion such that a limited cutting penetration is achieved under a predetermined pressure range and travel speed along a pipe end surface. The cutter member advances longitudinally and simultaneously rotates into cutting engagement with the pipe end portion faster than the ability of the cutting elements to cut, thereby simultaneously cutting and pushing the pipe end portion into snug engagement with the sleeve section.

Rapid installation fitting for plain end pipe

A fitting for connection to a metal plain end pipe includes a generally cylindrical sleeve section sized to receive and cradle a pipe end portion, an annular seal in the sleeve section for forming a fluid-tight connection between the pipe end portion and the fitting and a locking rod extensible into the sleeve section. The locking rod is received into a bore extending substantially tangentially through a wall of the sleeve section and communicating with a sleeve section interior surface over less than a cross-sectional circular periphery of the bore whereupon a segment of the wall of the bore forms an intersection with the interior surface along the length of the bore. The locking rod has a metal cutting tip for tangentially cutting a groove along the intersection in a pipe end portion received in the sleeve section. The locking rod is securely retained in the groove as a key for firmly locking the pipe into the fitting.

Fitting with tangential locking rod for coupling pipes

A fitting for connection to a metal plain end pipe includes a generally cylindrical socket section sized to receive and cradle a pipe end portion, an annular seal in the socket section for forming a fluid-tight connection between the pipe end portion and fitting, and a locking device extensible into the socket section for securing the pipe end portion to the fitting. The socket section has a first bore extending from an exterior surface substantially through the socket wall and a coaxial, second bore of lesser diameter than the first bore extending the remainder of the way. The locking device includes a shaft having a head end and an opposite tip end for extension through the first and second bores and inwardly of the socket wall interior surface for engagement with a wall of a pipe end portion positioned in the socket section. A ring seal around the shaft engages a side wall of the first bore for providing a fluid-tight engagement between the shaft and the side wall. A coil spring sleeved on the shaft urges the tip end inwardly of the interior surface and into engagement with the pipe end portion whereby the pipe is locked to the fitting.

Fitting with biased locking device for coupling pipes

An on-off sprinkler head for fire extinguishing systems comprises a housing having a central cavity with an inlet aperture and a discharge orifice disposed at opposing ends thereof in an aligned orientation. A reciprocating valve having a valve head, a mating seat, and a stem is mounted axially in the central cavity, and controls the flow of fire extinguishing fluid therethrough. A temperature responsive, on-off drive motor is connected with the free end of the valve stem, and reciprocates the valve head with respect to the valve seat in response to selected temperature changes. The drive motor is mounted in the housing in a position axially offset from the aligned inlet aperture and discharge orifice, whereby during a discharge condition, the fire extinguishing fluid flows substantially unimpeded through the valve, and a solid, uninterrupted stream of fluid is emitted from the discharge orifice. The valve includes a deflector plate on which the fluid stream impinges and is dispersed into a spray.

Growing community of inventors

Doylestown, PA, United States of America

Arne H Hansen