Abstract: To protect the pump of a whirlpool bath against running dry and against blockage at the inlet, a pressure (or flow) sensor 14 senses pump pressure and generates a signal to keep a switch S2 in the pump motor electrical supply circuit closed. If the pressure signal ceases owing to blockage or running dry, the switch S2 opens. A manual override button 15 is held ON to close switches S1a and S1b in the power circuit for start-up. The sensor 14 and manual button 15 are preferably air pressure devices. Switch S1a is preferably an air-signal-operated latching switch whereby with the pump operating, the button 15 can be operated to switch the pump off. Relays RLA 1 and 2 may be used in conjunction with the electrical switches. A bleed hole may be provided between the button 15 and switch S1b to limit the period of time for which the motor could be run, with the bath empty, by prolonged inadvertent actuation of the button 15.

Abstract: A small, reliable diverter valve that maintains a relatively constant flow through a spray nozzle in spite of water supply pressure fluctuations and that positively terminates flow from the faucet spout during hand spray operation. A variable elasticity cup seal keeps constant area passageway to the spray nozzle in spite of water supply fluctuations. A normally open path, moreover, enables air to flow from the spout into the water supply system in conditions of negative supply pressure and thereby assists the cup seal in preventing backflow from the spray nozzle into the fresh water supply.

Abstract: A straight-way valve comprising a valve body having regulating elements is mounted therein. The valve regulating elements include a plurality of discs, one of which is mounted for rotation and at least one of the other discs is statically mounted in valve body. The rotatable disc has a plurality of flow ports, which correspond with flow ports formed in the at least one static disc. The at least one static disc is arranged in face-to-face contact against the rotatable disc to form a fluid tight, mechanical seal. An actuating device is coupled to the rotatable disc and is mounted for rotation in said valve body. The actuating device includes means, which extend through the valve body for rotating the disc from an opened to a closed position.

Abstract: The invention relates to hinge preparation assembly for mounting in each of the mortises formed in the hinge jamb of a steel frame. The hinge preparation assembly includes a hinge reinforcement member having a plurality of spaced apart threaded openings for mounting a leaf of a standard weight hinge set thereto. A hinge conversion means is removably mounted to the hinge reinforcement member so that upon its removal, the hinge preparation assembly is converted from a standard weight hinge preparation to a heavy weight hinge preparation and capable of mounting a leaf of a heavy weight hinge set thereto without requiring changing the hinge jamb of a steel door frame or modifying the hinge mortises thereof.

Abstract: A straight-way valve assembly is provided with regulating elements in the form of discs, of which one is rotatably-mounted and includes flow ports, which correspond to flow ports of the other static discs, which static discs are arranged on opposite faces of the rotatable disc to form a mechanical, fluid tight seal, whereby the face of the rotatable disc directed away from the supply line includes one or several recesses that are in fluid communication with valve vent means when the valve is in its closed position; the recesses extending radially outwards across the surfaces of the rotatable disc.

Abstract: The invention relates to hinge preparation assembly for mounting in each of the hinge mortises formed in the hinge edge of a steel door. The hinge preparation assembly includes a hinge reinforcement member having a plurality of spaced apart openings including threaded openings for mounting a leaf of a standard weight hinge set thereto. A hinge conversion member is removably mounted to the hinge reinforcement member so that upon its removal, the hinge preparation assembly is converted from a standard weight hinge preparation to a heavy weight hinge preparation, which is capable of mounting a leaf of a heavy weight hinge set thereto without requiring changing the door, modifying the hinge mortises thereof or the hinge preparation assembly.

Abstract: A seal-actuating mechanism, which when mounted in a wall panel of the type having channel-shaped opposed frame members can be installed, replaced or repaired without removing the exterior finished surface of the wall panel. The seal-actuating mechanism includes a rotatable shaft mounted between the opposed frame members and an operator member including pivot lever means is mounted on each end thereof. At least one tension member is disposed in the cavity of each frame member, one end of which is coupled to the pivot lever means, and the other end is coupled to the shiftable seal assembly so that when the shaft is rotated the seal assembly is shifted respectively from an extruded unlatched position to its retracted latched position.

Abstract: This invention concerns a sanitary water valve having a valve assembly, which includes a cylinder having a bore extending longitudinally therethrough and at least one water inlet orifice and a water outlet orifice formed in the cylinder wall; and a slot or opening, extending longitudinally over the length of the cylinder wall. The at least one water inlet orifice and water outlet orifice are formed on the cylinder and positioned the same longitudinal distance from one end thereof. A piston is positioned in the cylinder bore and is rotatably and longitudinally shiftable therein, the piston including a water mixing chamber in the form of a transverse slot or water passage, which is arranged and constructed to connect with at least one water inlet orifice and the water outlet orifice.

Abstract: A heat exchanger having an ambient air entrant opening and a heated air discharge opening which is adapted for use with, or is provided as an integral assembly for a fireplace is disclosed. The heat exchanger is in the form of a duct and includes a primary heat transfer surface for mounting in surrounding relation with the combustion chamber of the fireplace and at least one secondary heat transfer surface mounted in the duct so that the heat is transferred from the primary heat transfer surface by direct radiation to the at least one secondary heat transfer surface and from the at least one secondary heat transfer surface to the wall surface of the duct opposite the primary heat transfer surface whereby the heat transfer capacity of the heat exchanger is increased in direct proportion to the surface areas of the primary and the at least one secondary heat transfer surfaces.