Automated flush system

• US 4,141,091 A
• Filed: 12/10/1976
• Issued: 02/27/1979
• Est. Priority Date: 12/10/1976
• Status: Expired due to Term

• Current Assignee: Charles F. Pulvari
• Original Assignee: Charles F. Pulvari
• Inventors: Pulvari, Charles F.
• Primary Examiner(s): Levy, Stuart S.
• Application Number:
  US05/749,426
• Time in Patent Office: 809 Days
• Field of Search: 4/1, 4/10, 4/100, 4/166, 4/DIG. 3, 4/300, 4/302, 4/38, 4/318, 4/405, 4/406, 4/313, 4/314, 340/1 R, 340/3 D, 340/258 A, 340/560, 361/179, 251/129
• US Class Current: 4/313
• CPC Class Codes: E03D 5/105 touchless, e.g. using sensors
• CPC Class Codes: G01S 15/50 Systems of measurement, based on relative movement of the target
• CPC Class Codes: G01S 17/50 Systems of measurement based on relative movement of target

Abstract

There is disclosed an automated flush system which senses the approach and departure of an object or person and produces control signals indicative of said approach and departure, respectively. A discriminator unit receives and decodes the approach and departure signals to produce a flush control signal which controls a flush valve in the flush system as a result of the occurrence of the departure signal following the occurrence of the approach signal.

Claims

1. In an automated flush system having an electrically controllable flush valve in the flush system and control means for controlling said flush valve, the improvement comprising:

sensing means including transmitting means for establishing a sensing field, for sensing the approach and departure motion of a user with respect said sensing means, receiving means for receiving reflected frequency shifted signals of said approaching and departing user, and signal processing means producing electrical control signals indicative of the approach and departure motion, respectively, of said user with respect to said sensing means, and a

discrimination unit for receiving and decoding said approach and departure motion caused signals to produce a flush control signal for controlling said flush valve during the departure cycle only as a result of the occurrence of said departure motion signal.