US 5,345,991 A · Rolling gate

Abstract

A rolling gate of the invention has two gate parts movable toward or away from each other from opposite sides of a gate opening; carriage tracks mounted above the gate opening; a running carriage connected to each gate part and movably mounted on carriage tracks above the gate opening to carry each gate part as the gate parts are moved toward or away from each other; a guide member provided on each gate part extending along a front edge of each gate part; an L-shaped force transmitting element for each gate part, a first end of which is pivotally connected to and slidable along the guide member of that gate part and a second end of which is pivotally connected to a stationary member, advantageously the frame of the gate, and a linear drive for each gate part, which can be a hydraulic or pneumatic drive, including an extendible driven member connected to one of the force transmitting elements to pivot the force transmitting element and thus move the movable gate parts to or from each other to open and close the rolling gate and to provide a controlled clamping force between the closed gate parts.

Claims15

Dependent claims

A rolling gate having a gate opening and comprising two gate parts movable toward each other from opposite sides of the gate opening and away from each other;

carriage tracks mounted above the gate opening;
a running carriage connected to each of said gate parts and movably mounted on said carriage tracks above the gate opening so as to carry each of said gate parts as said gate parts are moved toward each other or away from each other on said carriage tracks;
a guide member extending longitudinally along a front edge of each of said gate parts;
an L-shaped force transmitting element connected with each of said gate parts, a first end of said L-shaped force transmitting element being pivotally connected to and slidable along said guide member of said gate part connected with said L-shaped force transmitting element and a second end of said L-shaped force transmitting element being pivotally connected to a stationary member;
and linear drive means for each of said gate parts, each of said linear drive means including an extendible driven member connected to respective ones of said L-shaped force transmitting elements to pivot said L-shaped force transmitting elements connected thereto and thus move said gate parts to open and close said gate opening and to apply a controlled closing force to said gate parts.

2 more elements

A rolling gate having a gate opening and comprising a gate part movable for opening and closing of the gate opening;

carriage tracks mounted above the gate opening;
a running carriage connected to said gate part and movably mounted on said carriage tracks above the gate opening so as to carry said gate part as said gate part moves along said carriage tracks;
a guide member extending along a front edge of said gate part;
an L-shaped force transmitting element for said gate part, a first end of said L-shaped force transmitting element being pivotally connected to and slidable along said guide member of said gate part and a second end of said L-shaped force transmitting element being pivotally connected to a stationary member;
and linear drive means for said gate part, said linear drive means including an extendible driven member connected to said force transmitting element to pivot said force transmitting element and thus move said gate part to open and close said gate opening and to apply a controlled closing force to said gate part.

2 more elements

Dependencies are inferred from the claim text.

Rolling gate

Life of this patent

Rolling gate

Life of this patent

Abstract

Claims15