Remote controlling
First Claim
1. Remote controlling apparatus comprising,terminal means for connection to terminals of a system to be controlled normally controlled by first control means,second control means for controlling said system,means responsive to a remote control signal for selectively connecting said second control means to said terminal means to exercise control over said system,and timing means responsive to the occurrence of said remote control signal for enabling said second control means to control said system only for a predetermined time interval.
1 Assignment
0 Petitions
Accused Products
Abstract
A temperature controlling system (10) is normally controlled by a thermostat that is superseded by a remotely controlled thermostat (21) in response to a remote control signal transmitted over telephone lines that retains control for eight hours established by an eight-hour clock (14). A response oscillator with warning thermostat (13) provides an answering signal indicating that the superseding thermostat is exercising control over the temperature controlling system of pitch which is varied to indicate control and distinctly lower when the warning thermostat indicates the temperature is less than a predetermined value.
37 Citations
18 Claims
-
1. Remote controlling apparatus comprising,
terminal means for connection to terminals of a system to be controlled normally controlled by first control means, second control means for controlling said system, means responsive to a remote control signal for selectively connecting said second control means to said terminal means to exercise control over said system, and timing means responsive to the occurrence of said remote control signal for enabling said second control means to control said system only for a predetermined time interval.
-
14. Remote controlling apparatus comprising,
terminal means for connection to terminals of a system to be controlled normally controlled by first control means, second control means for controlling said system, means responsive to a remote control signal for selectively connecting said second control means to said terminal means to exercise control over said system, rechargeable battery means for supplying operating potentials to said apparatus, and rectifying circuit means for coupling said rechargeable battery means to said terminal means to enable said battery means to be recharged at a trickle current rate sufficiently low so that when said terminal means are connected to a low voltage source in said system to be controlled through an operable element therein the operable element remains not operated.
-
16. Remote controlling apparatus comprising,
terminal means for connection to terminals of a system to be controlled normally controlled by first control means, second control means for controlling said system, means responsive to a remote control signal for selectively connecting said second control means to said terminal means to exercise control over said system, indicating means for indicating the status at the location of said system to be controlled including a tone generator for providing an answering tone of first frequency to indicate a first condition and of a second significantly different audible frequency to indicate a second condition, and means for varying the pitch of said answering tone at a predetermined audible frequency to indicate a third condition, all said frequencies being transmittable over telephone lines.
-
17. Remote controlling apparatus in accordance with clam 16 and further comprising a warning thermostat at a location of said system to be controlled for producing said second frequency when the temperature thereat is below a predetermined set value.
Specification