Method and apparatus for the safe manual operation of an automated security gate
AssigneeLink Door Controls, Inc.
InventorWalter Parsadayan
Life of this patent
Estimating the term…
Abstract
An apparatus for shutting off power to a gate motor is disclosed when the gate to which the gate motor is connected is opened or closed manually. In a preferred embodiment a sensor is activated that immediately shuts off power to the gate motor upon insertion of a crank into a receptacle on a pulley of the power driven gate movement system to commence manual opening or closing of the gate with the crank. Rotation of the crank in the appropriate direction either opens or closes the gate. Power is restored to the gate motor when the sensor determines that the crank has been withdrawn from the pulley.
Claims23
A security gate with a safety mechanism comprising:
- a. a security gate movable between a closed and an open position to thereby deny or allow access to a secure area;
- b. a security gate controller which controls the opening and closing of said gate in response to an open or close signal;
- c. a motor mechanically connected to said gate which opens or closes said gate upon receipt of an appropriate signal from said gate controller;
- and
- d. a mechanism for manually opening and closing said gate when necessary;
- and
- e. a power shut off device which shuts off power to said gate motor when said gate is being manually opened or closed.
A security gate safety mechanism comprising:
- a) a sensor that determines when a security gate, normally opened and closed by an automated system, is being manually opened or closed and generates a manual operation signal for so long as the gate is being manually opened or closed;
- and
- b) a power shut off device responsive to said gate manual operation signal from said sensor wherein said shut off device shuts off power to at least a motor used to automatically open or close the gate for so long as said manual operation signal is received.
A security gate with a safety mechanism comprising:
- a) a security gate movable between an open and closed position to thereby permit or deny access to a secure area;
- b) a gate movement mechanism and power source for the same to move said gate between said open and closed position;
- c) a gate controller to automatically initiate opening and closing of the gate with the gate movement mechanism and power source upon receipt of appropriate authorization to do so;
- d) a manual gate movement apparatus that will allow the manual opening and closing of the gate when a failure occurs in the gate controller or power source;
- e) a sensor which senses when the manual gate movement apparatus is being used and generates a gate manual movement signal;
- and
- f) a gate power shut off device that shuts off power to the gate power source when the gate manual movement signal is received form said sensor.
A method for providing a user safe system for manually opening or closing a security gate in which the automatic opening and closing apparatus has malfunctioned comprising the steps of:
- a. manually opening or closing a security sate when it fails to open or close do to a malfunction of the system;
- b. shutting of the power to the automatic gate opening system as soon as the step of manually opening or closing the gate commences;
- and
- c. turning the power back on as soon as soon as the step of manually opening or closing the gate ceases.
Dependencies are inferred from the claim text.