Other

Laing Holding and Associates

Karsten Andreas Laing

Johannes Nikolaus Laing

Nikolaus Johannes Laing

Birger J Laing

Oliver P Laing

Zoltan Jagasics

Doerte A Laing

Ludwig Ludin

Inge Laing

Nikolas J Laing

To create an electric motor, comprising a rotor and a stator, whereby the rotor is spherically supported, which motor has a high efficiency, it is proposed, that the rotor produces a magnetic field, that the surface of the rotor facing the stator has a spherical configuration, that the rotor and stator are adapted to each other so that a maximal magnetic attraction force which keeps the rotor on the spherical bearing is larger than the maximal axial counterforce.

Electric motor with circulator pump

A pump particularly adapted for use in a closed fluid circuit, as within its housing a resiliently compressible chamber in contact with the fluid being conveyed by the pump so that any pressure change within the fluid caused by temperature variations can be volumetrically absorbed by compression or extension of the chamber.

Motor pump with expansion tank

A circulator pump-motor unit which has an impeller assembly that can selectively tilt between two positions is disclosed. Each of the two positions corresponds to aligning a suction port with one of two inlet ports. The unit can be used to, for example, change the path of hot water conveyed between these ports so that either a hot water system or a hydronic system gets heat.

Pump with selectable suction ports

A centrifugal pump with an integrally-constructed electrical motor. The motor has a hemi-spherical rotor mounting the impeller and comprising at least two permanent magnetic poles. The rotor is balanced on a spherical bearing including a ball or a hemispherical structure mounted at the end of a shaft engaged into an axial cavity in the smallest end of the rotor. A thin, waterproof and static septum is positioned in the air gap between the stator and the rotor. The annular stator includes a bowl-shaped yoke and a winding, applied to the inner surface of the yoke, comprising segments running in successive alternate sections obliquely to the motor's axis of rotation between the upper and lower rims of the yoke. Due to the geometry of the motor, the residual magnetic forces urge the rotor toward a balanced position against the shaft and bearing.

Centrifugal pump with integrated motor

A compact electrical motor, particularly adapted to act as the driving component of a centrifugal pump, has a hemispherical rotor mounting the impeller and comprising at least two permanent magnetic poles. A thin, waterproof and static septum intimately surrounds the rotor. A circular stator includes a bowl-shaped yoke and a winding applied to the inner surface of the yoke and comprising segments running in successive, alternate sections obliquely to the motor's axis of rotation between the upper and lower rim of the yoke. The successive foldings of the strands about the upper and lower rim of the yoke substantially eliminates the electro-mechanically inactive and power-dissipating portions of the stator or winding found in motors of the prior art.

Electric motor with reduced axial length

In the motor assembly of a pump in which a magnetic rotor is balanced on a spherical bearing projecting into an axial cavity of said rotor assembly, the bearing surface inside the cavity is shaped and dimensioned to stabilize the rotor assembly in the presence of diverging magnetic forces generated by the permanent magnets forming the core of the rotor.

Spherical bearing for electrical machines with permanent magnetic rotors

A circulator-pump-motor-unit which has two inlet ports and means to change the path of the hot water conveyed between these ports so that either the hot water system or the hydronic system gets heat.

In installations with water circuits such as domestic hot water or hydronic heating circuits a circulator pump is connected with a temperature sensor which energizes the pump as soon as the temperature of the water in the system falls below a predetermined temperature close to freezing.

Freeze protection for hot water systems

A three-way-valve is actuated by fluid which moves membranes.

Hydraulically activated three-way-valve

Installation for the sterilization of a body of water wherein the water is conveyed through a heat exchanger to a heat source, where it is heated up to the sterilization temperature. This stream of hot water transfers its heat to the incoming stream of water, leaving the heat exchanger at a temperature that is only slightly higher than that of the incoming water.

Process and device to sterilize a stream of water

In a hot and cold water distribution system wherein the hot water is delivered from a water heater to a distant hot water tap adjacent to a cold water tap, a hot water recirculation pump assembly purges the hot water line of any cooled-down water in order to assure instant hot water delivery when the hot water tap is opened. The volume of water drawn from the hot water line is, in a first embodiment of the invention, cooled down through a radiator before being recirculated through the cold water line faucet. In a second embodiment, the volume of cooled down water is flushed back through the hot water line by admission of an equal volume of cold water in that line. That volume of cold water is immediately pumped back into the cold water line, and automatically replaced by hot water drawn from the water heater. Each embodiments prevent any drawing of lukewarm water from the cold water tap. The pump assembly includes a pressure-sensitive check-valve in the pressure region of each pump.

Instantaneous hot-water delivery system

In a hot and cold water distribution system wherein the hot water is delivered from a water heater to a distant hot water tap adjacent a cold water tap, a hot water recirculation pump assembly purges the hot water line of any cooled-down water in order to assure instant hot water delivery when the hot water tap is opened. The volume of water drawn from the hot water line is flushed back through the hot water line by admission of an equal amount of water that was stored within a tank. That volume of water is pumped back into the tank, and automatically replaced by hot water drawn from the water heater.

Instantaneous hot water delivery system with a tank

A circulation and heating device for a hot tub, consisting of a motor-pump-unit and a pipe forming a stand, whereby said pipe ends in a dry portion of the pump housing, and contains a rod shaped resistance heating element with the leads on one end which receive their power supply from inside said dry portion, and that the water conveyed through the pipe leaves through a lateral opening of the pipe which communicates with the suction side of the pump.

Circulation-heating element device

In a plumbing installation wherein hot water is piped from a water heater or reservoir to a plurality of taps by a distribution conduit, an improved recirculation circuit of limited power consumption to continually pump small amounts of hot water from said conduit back into said reservoir which comprises a low power radial pump unprotected by a check valve against backflow, but having a rotary impeller with linear radial vanes leading to an annular output channel larger than necessary for maximum pumping throughput. The oversized annular channel and linear vanes limit the impact of any backflow upon the impeller and prevents its operating as a tubine as the pump is subjected to back pressure when a large amount of water is being drawn through the taps.

Pump for secondary circulation

A rotor of an electric motor with a spherical magnetic gap or an impeller which forms a pivotably mounted rotating unit with an armature consists of a permanent magnetic annular member which is arranged juxtaposedly to a second stationary permanent magnetic annular member. The two magnets are spaced apart from each other by an air-gap and remain apart from each other because of their polarity. This prevents tumbling and counteracts the hydraulic thrust to prevent liftoff of the rotating unit from the step bearing.

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La Jolla, CA, United States of America

Karsten Andreas Laing