Patent
Transmitter with buzzer
Paul A. Remes,Brian L. Jorgensen +1 more
TLDR
In this paper, a garage door opener system includes a radio receiver actuable by reception of a preselected radio signal for moving a door between opened and closed positions and a portable hand-held transmitter manually actuable to transmit such pre-selected radio signals to the receiver.Abstract:
A garage door opener system includes a radio receiver actuable by reception of a preselected radio signal for moving a garage door between opened and closed positions and a portable hand-held transmitter manually actuable to transmit such preselected radio signal to the receiver. The transmitter includes a radio frequency oscillator for producing the radio signal to be transmitted and a modulating means manually actuable to cause the oscillator to transmit a radio signal which is of the preselected form. An audio transducer is connected in parallel with the radio frequency oscillator to the output of the modulating means to produce an audio signal which corresponds in form to the electric signal modulating the radio frequency oscillator, which audio signal is audible to a person holding the portable transmitter.read more
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Patent
Coding system for multiple transmitters and a single receiver for a garage door opener
TL;DR: In this article, the authors present a system for remote control of garage doors and other devices wherein an extremely large number of codes are available for remote transmitters for operating the garage operator and each transmitter has its own unique and permanent nonuser changeable code.
Patent
Multi-channel remote control transmitter
Ze'ev Drori,Moti Segal +1 more
TL;DR: In this paper, a multi-channel remote control transmitter is disclosed for control of apparatus such as vehicle security systems, garage door openers, and the like, providing the capability of selecting one of many different channels or codes to be transmitted with a minimum number of control switches.
Patent
Automatic sectional door opener
TL;DR: In this paper, an automatic door opener for a sectional door includes a drive unit mounted adjacent to a door drive shaft and having a reversible motor, a gear linkage for translating rotation of motor drive shaft into rotation of the sectional doors drive shaft, and a clutch which permits the gear linkage to be manually temporarily disengaged from the motor shaft.
Patent
Door frame with integrated keyless entry system
TL;DR: In this paper, an entry control and security system in the form of a pre-assembled door and door frame unit having an electric light (38), a motion detector (42), a radiant energy receiver (40), and an electromechanically actuated latch (28) was presented.
Patent
Method and apparatus for door operation remote control
TL;DR: In this article, a radio transmitter transmits a door operation command signal for a predetermined time when the operator operates a switch, irrespective of a turn-on time of the switch.
References
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Patent
Digital encoder for door operator
TL;DR: In this paper, a digital radio control system comprising a transmitter for producing a repeating series of width modulated pulses, and a receiver responsive only to a series of predetermined pulse characters to actuate a load device such as a garage door operator is presented.
Patent
Signal transmitter using an active thick film substrate
TL;DR: In this paper, a battery powered portable acoustic transmitter comprises a plurality of singlepole, momentary contact switches, a type 555 pulse producing integrated circuit chip, and an electroacoustic transducer and matching tuning coil.