Richard Wesley Williams
Physician at Geddes Ave, Englewood, CO
License number
Colorado 21881
Issued Date
Jul 11, 1978
Renew Date
May 31, 2001
Expiration Date
May 31, 2001
Type
Physician
Address
Address
7297 E Geddes Ave, Englewood, CO 80112
Professional information
Recorder Actuator For Communication Lines
US Patent:
4117266, Sep 26, 1978
Filed:
Jul 13, 1977
Appl. No.:
5/815313
Inventors:
Richard W. Williams - Englewood CO
International Classification:
H04M 164
US Classification:
179 6R
Abstract:
A connection across telephone lines includes a resistor having a shunted capacitor circuit holding a normally closed relay open and permitting it to close on closing the telephone circuit, by lifting the handset, to activate a recorder. Replacing the handset opens the circuit shutting off the recorder. A current limiting resistance in the recorder switch circuit prevents damage to the relay while the capacitor provides high current for activating the the relay solenoid. A bridge circuit eliminates polarity of the magnetically biased relay.
Two Way Telephone Amplifier
US Patent:
4115658, Sep 19, 1978
Filed:
Apr 11, 1977
Appl. No.:
5/786335
Inventors:
Richard W. Williams - Englewood CO
International Classification:
H04M 908
US Classification:
179 1HF
Abstract:
A two-way telephone amplifier uses a microphone-speaker switching system with the microphone normally on. Incoming or off-line voice signal causes switching to open the transmit line and close the receive line. Features of the invention include a bridge circuit with transmit and receive lines all connected to one side of the secondary of a telephone line coupling transformer.