US 4,370,559 AGranted

Solar energy system

OwnerDavid T. Langley, Jr.inventor

Life of this patent

Estimating the term…

Loading patent…

Abstract

A solar energy system is disclosed in which the solar energy is converted to electrical energy for immediate use or the energy may be stored for use at a later date. The solar energy is converted to electrical energy by a large photo-voltaic array and the output of the photo-voltaic array is fed through an inverter and other control circuitry to produce an a.c. electrical output of a predetermined magnitude. The a.c. electrical output may be used directly or the electrical energy may be fed to a storage system for later use. In one embodiment the a.c. electrical energy is employed to drive a pneumatic pump or air compressor for storing the energy in the form of a compressed gas, either in a rigid tank or in a resiliently expandable tank. The compressed air from the tank is released through a control valve and is fed through a pneumatic motor. The pneumatic motor drives an electric generator for producing an a.c. electrical output at the desired times. In another embodiment of the invention, the electrical storage system comprises a system suitable to lift a weight. The potential energy is later converted to kinetic energy by lowering the weight and through a linkage system, is utilized for the generation of electricity through an electric generator.

Claims2

Dependent claims

A solar energy apparatus, comprising, in combination:

(a) solar energy means for converting solar energy to electrical energy:
(b) conversion means operably connected to the solar energy means for converting to mechanical form an energy output of the solar energy means;
(c) energy storage means operably connected to the conversion means for storing energy in mechanical form received from the conversion means, and forming a potential energy storage facility permitting use of the energy at selected later times, the energy storage means including elevatable, solid weight means for storing potential energy, and clutch means connected to the generator means for permitting the potential energy to be transferred from the weight means to the generator means by downward movement of the weight means, the energy storage means further including a chain connected to the weight means, and sprocket means arranged engaging the chain and operably connected to the generator means and conversion means for alternately moving the chain and being moved selectively by the chain in dependence on which of the generator means and conversion means is being operated, irregular movement of the chain by the sprocket means, through operation of the clutch means of the conversion means, elevating the weight means, and disengagement of the clutch means permitting the weight means to fall at a uniform rate and actuate the generator means;
and
(d) generator means operably connected to the energy storage means for selectively converting energy stored in the energy storage means from mechanical form into electrical form.

2 more elements

Dependencies are inferred from the claim text.