Patents Assigned to Rho Sigma
  • Solar heating system
    Patent number: 4109639
    Abstract: The heating system includes a solar energy collector and a tank. Water circulation is controlled normally in a proportional mode using a pump which is turned on intermittently for a duration synchronized with full AC cycles. Impending freezing and boiling in the water system is separately detected controlling a drain valve for the collector while holding the pump in the off state.
    Type: Grant
    Filed: June 13, 1977
    Date of Patent: August 29, 1978
    Assignee: Rho Sigma
    Inventor: Partick J. Keegan
  • Measurement of solar radiation
    Patent number: 4015116
    Abstract: This solar radiation measuring system records the integral of total solar radiation over a given period of time, and also records the periods during that time when the sun was obscured by clouds or other objects. The measurement of the integral of solar radiation includes all spectral components of the solar spectrum from the ultra-violet through the infrared. The design of the device is such that readout is simple and complex data reduction is unnecessary.
    Type: Grant
    Filed: October 20, 1975
    Date of Patent: March 29, 1977
    Assignee: Rho Sigma Corporation
    Inventor: Raymond J. Bahm