Apparatus and method improving safety in the operation of a crane
First Claim
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1. An apparatus for improved safety in the operation of a crane comprising:
- A. an Remote Keyless Entry transmitter (80) capable of transmitting at least one RF signal(90) or code;
an electronic circuit (70) affixed with affixing means proximal a crane load (32);
the Remote Keyless Entry transmitter (80) remote from the crane load (32);
the electronic circuit (70) comprised of RF or code receiving or detection means (74), (75), controller means (71) to receive the output of the RF or code receiving or detection means (74), (75);
the controller (71) output operates an asynchronous alarm driver (72) which provides an output to operate at least a horn alarm (77).
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Abstract
The invention is an apparatus and method for improved safety in operation of a crane relative to the transit of a load overhead of workmen. A initiating operator transmits a RF signal to sound a first horn alarm when a lift commences. The initiating operator transmits a second RF signal, when the transit of the load commences, to sound a second horn alarm which operates asynchronously relative to the first horn alarm. A terminating operator disengages the horn alarms when the load is placed. Workmen will hear a Doppler effect as indicative of the direction of travel and position of the load.
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Citations
6 Claims
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1. An apparatus for improved safety in the operation of a crane comprising:
A. an Remote Keyless Entry transmitter (80) capable of transmitting at least one RF signal(90) or code;
an electronic circuit (70) affixed with affixing means proximal a crane load (32);
the Remote Keyless Entry transmitter (80) remote from the crane load (32);
the electronic circuit (70) comprised of RF or code receiving or detection means (74), (75), controller means (71) to receive the output of the RF or code receiving or detection means (74), (75);
the controller (71) output operates an asynchronous alarm driver (72) which provides an output to operate at least a horn alarm (77).- View Dependent Claims (2, 3)
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4. A method for improved safety in the operation of a crane composed of the steps of:
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A. affixing by affixing means an electronic circuit (70) proximal a crane load (32);
B. transmitting, from a position remote from the crane, at least a first RF or code (90) to be received by at least one receiver or antenna (74), (75) at the electronic circuit (70) upon commencement of crane operation;
C. detecting the at least first RF signal (90) or code by a controller (71) and activating at least one horn alarm (77). - View Dependent Claims (5, 6)
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Specification