| Patent Number |
Title Of Patent |
Date Issued |
| 4073595 |
Method and means for abruptly terminating the flow of fluid in closed fluid circulating systems |
February 14, 1978 |
| A nuclear steam supply system wherein each of a plurality of centrifugal pumps begins to operate with full cavitation in response to an abrupt drop of system pressure in the event of leakage. This is achieved by influencing the net positive suction head of each pump over the entire r |
| 4050846 |
Fluid circulating apparatus |
September 27, 1977 |
| A fluid circulating apparatus includes a housing which forms a part of an aggregate, for instance a heat exchanger. The housing has an inlet portion for admission of fluid into a first compartment and an outlet port which communicates with a pressure chamber of the housing. One wall of t |
| 4046389 |
Stuffing box |
September 6, 1977 |
| A gland for compressing packings in the receptacle of a stuffing box has a washer-like stamping made of metallic sheet material and bearing against the exposed side of the outermost packing, and a cupped section whose flange is axially movably secured to the receptacle and whose cylindri |
| 4043707 |
Submersible motor-driven pump |
August 23, 1977 |
| An underwater pumping arrangement includes a submersible pump having a pump outlet conduit provided with a first connecting flange adapted to register with a second connecting flange of an outflow conduit permanently provided at the bottom of a liquid-filled pit or container to form with |
| 4039917 |
On-off servocontroller generating a pulse-duration-modulated error-compensating signal |
August 2, 1977 |
| A servosystem is comprised of an energy-storing controlled system having an output variable which is to be maintained at a predetermined value. An energy-varying unit, for example a source of electrical energy, is connected to the controlled system for energizing the latter. Alternat |
| 4033877 |
Cyclone for removing solid impurities from liquid in a pump and motor unit |
July 5, 1977 |
| A glandless centrifugal pump and wet electric motor unit for use in fossil-fired power plants has a cover which is sealingly connected with one end of the main portion of the motor housing and contains one or more cyclone separators for solid impurities. Liquid to be relieved of solid |
| 4029043 |
Position indicator for valves and the like |
June 14, 1977 |
| A spindle is axially displaceable toward and away from an opening in a housing in which it is located. The spindle end portion facing the opening is concentrically surrounded by jaws having cam faces which are in permanent biased contact with the end portion or with a side member car |
| 4019829 |
Centrifugal pump with inducer |
April 26, 1977 |
| A centrifugal pump wherein the inducer in front of the impeller is a propeller and has a hub whose rear end face, which is immediately adjacent to the front end portion of the impeller, has a circumferential groove. When the pump is in operation, especially in the partial load range, the |
| 3989966 |
Apparatus for circulating cooling and lubricating liquids and the like particularly after shutdo |
November 2, 1976 |
| A pump for circulating cooling and lubricating liquid is driven by a motor which comprises a central rotor; a tubular housing coaxially surrounding the rotor and normally filled by the cooling and lubricating liquid; and a stator coaxially surrounding this tubular housing. Heating elemen |
| 3985378 |
Flexible coupling |
October 12, 1976 |
| A sound-absorbent and/or vibration-damping flexible pipe coupling wherein the end portions of an elastic compensator hose are secured to spaced-apart flanges which can be bolted to the flanges of pipes or analogous conduits for a fluid. The hose is surrounded by two pressure-transmit |
| 3977808 |
Method and means for abruptly terminating the flow of fluid in closed circulating systems of nuc |
August 31, 1976 |
| A nuclear steam supply system wherein each of a plurality of centrifugal pumps begins to operate with full cavitation in response to an abrupt drop of system pressure in the event of leakage. This is achieved by influencing the net positive suction head of each pump over the entire r |
| 3950220 |
Internal primary recirculating pump for boiling water reactors |
April 13, 1976 |
| The pressure vessel of a boiling water reactor has several openings, one for each of a set of internal primary recirculating pumps. The body of each pump extends into the respective opening and is provided with a ring-shaped chamber which receives feed water and surrounds the pump shaft |
| 3947154 |
Pump assembly for circulation of coolant in boiling water reactors or the like |
March 30, 1976 |
| A pump assembly for circulation of liquid coolant in boiling water reactors has a thin-walled spherical pump body for an impeller which rotates about a vertical axis and an electric motor which drives the impeller and has an upright housing with a heat barrier at its upper end. The heat |
| 3947153 |
Lubricated thrust bearings for pump and motor units |
March 30, 1976 |
| A glandless pump and wet motor unit for circulating water in a boiler has an axially movable shaft which is rotatable in a liquid-filled housing of the motor and carries a disk disposed between electromagnets which are energizable to produce an electromagnetic field serving to maintain t |
