Louis T Parker

US Patent:

40760251, Feb 28, 1978

Filed:

Nov 22, 1976

Appl. No.:

5/744054

Inventors:

Louis W. Parker - Fort Lauderdale FL

International Classification:

F24J 302

US Classification:

126271

Abstract:

A solar heater comprising two or more containers nested one within the other for the solar heating of a gaseous medium such as air therein. Each container is provided, near its lower end, with a solar radiation absorbing metal sheet which, when it becomes hot, raises the temperature of the air within the container causing the heated air to rise to the top of the container where it transfers some of its heat to the adjacent container and to the outside air, thereby creating convection currents. The innermost container is provided with a boiler structure positioned to be heated by incident solar radiation to a temperature sufficiently high to convert water within the boiler structure to stem. The boiler structure is of thin flat configuration, is covered by radiation absorbing material on the face thereof which is exposed to solar radiation, has its opposite face polished to a shine, has a number of reinforcing members extending between the opposing faces of the boiler structure, and exhibits surface sections of smoothly curved outwardly bulging convex configuration between the reinforcing members to provide a comparatively light weight boiler structure having adequate strength to withstand the pressure of steam generated therein. In one form of the invention a cylindrical lens is provided to concentrate the sun's rays and superheat the steam obtained from the boiler.

US Patent:

40191044, Apr 19, 1977

Filed:

May 12, 1975

Appl. No.:

5/576934

Inventors:

Louis W. Parker - Fort Lauderdale FL

International Classification:

H02P 736
H02K 1724

US Classification:

318195

Abstract:

A polyphase motor of the wound rotor type has the rotor of a polyphase generator, smaller in size than said motor, mounted on the motor shaft. Polyphase voltages produced across the generator rotor are coupled to the input of an amplifier having an output power commensurate with the size of the motor and the amplifier output is connected to the windings of the motor rotor to supply the current to the motor rotor windings. The frequency of the voltage fed to the motor rotor is inversely proportional to the motor speed, and a frequency sensitive filter is provided to adjust the output of the amplifier thereby to control the motor speed and to maintain said speed at a selected predetermined value regardless of the motor load.

US Patent:

40951480, Jun 13, 1978

Filed:

Jul 22, 1976

Appl. No.:

5/707578

Inventors:

Louis W. Parker - Fort Lauderdale FL

International Classification:

H02K 2300

US Classification:

318138

Abstract:

A direct current motor comprises a stator having a plurality of coils connected in series with one another located around a circle in a closed loop configuration, with the junctions between adjacent pairs of coils being in turn connected to diametrically opposed ones of said junctions in said closed loop configuration. A plurality of pairs of oppositely poled silicon controlled rectifiers are connected respectively to the junctions of different adjacent pairs of the coils for conducting current from a DC source into and out of the junctions. A wound rotor energized by the DC source drives a distributor which is arranged to energize the gate electrodes of different ones of the silicon controlled rectifiers in sequence so as to produce a plurality of stator poles which, at any instant of time, are angularly displaced from the rotor poles, and which stator poles shift in position about the closed loop coil configuration with rotation of the rotor. The rotor further includes a centrifugal switch arrangement operative to achieve one mode of operation when the motor is starting and a different mode of operation when the motor is running. In one form of the invention, the stator coil junctions are energized from the DC source through brushes associated with a commutator driven by the rotor in the starting mode of operation, and the brushes are lifted from the commutator and the silicon controlled rectifiers are controlled by the distributor when the motor shifts into its running mode of operation.

US Patent:

48642126, Sep 5, 1989

Filed:

Feb 3, 1989

Appl. No.:

7/305679

Inventors:

Louis W. Parker - Fort Lauderdale FL

International Classification:

H02P 736

US Classification:

318798

Abstract:

An energy economizing AC power control system for energizing an induction motor comprises a sine wave power source which is connected via a triac to the motor, and a control circuit which controls the conduction of the triac as a function of the load on the motor to provide the motor with short bursts of energy. The control circuit includes a field effect transistor having a gate electrode which is energized by a train of sawtooth shaped control signals having a repetition rate which is twice the frequency of the power source, and DC bias potential is also applied to the gate electrode with the magnitude of the DC bias potential being varied with variations in the current flowing through the motor stator winding. The field effect transistor is rendered conductive during the sawtooth excursion of each of the control signals, at a time subsequent to the commencement of each sawtooth signal, which is jointly dependent on the instantaneous magnitude of the rising excursion of each sawtooth signal and the magnitude of the DC bias potential. The field effect transistor generates a pulse during each sawtooth excursion, at a time following commencement of the sawtooth excursion which is accordingly dependent on the load on the motor, and each such pulse is used to determine the time at which the triac commences conduction during each half wave of energy from the sine wave power source.

US Patent:

49717529, Nov 20, 1990

Filed:

Jan 17, 1990

Appl. No.:

7/465518

Inventors:

Louis W. Parker - Fort Lauderdale FL

International Classification:

G21C 1310

US Classification:

376274

Abstract:

A nuclear power plant installation comprises a nuclear reactor that is disposed in an underground reactor room and connected to power generating equipment on the ground surface by pipes which pass between the underground reactor room and the ground surface. A plurality of underground cavities are disposed above the underground reactor room, each of said cavities comprising steel bridgework that defines the sides and tops of the cavity and an unreinforced concrete floor which supports a mass of particulate shielding material within the cavity. An explosive charge embedded within each such mass may be detonated in the event of a malfunction of the reactor to fracture the floor structure in the cavity if the floor has not been fractured by the reactor malfunction, thereby to cause tons of mixed sand and boron powder to fall from said cavities into the reactor room and bury the malfunctioning reactor within a few seconds after the explosion. The installation also includes one or more underground personnel rooms which are connected to the underground reactor room by horizontal tunnels that contain normally open doors which are automatically closed in the event of an explosion in the reactor room.