Safety guard for power operated machine
First Claim
1. A safety guard for a power operated machine, which machine utilizes a reciprocating part, including a working tool, located above a fixed bed for supporting a workpiece, comprising;
- a safety gate mounted to the reciprocating part by a connecting means and made to be free floating in at least one direction, said gate being spaced from said reciprocating part and movable in a path parallel to said working tool;
a first sensing means actuated by movement of said safety gate to sense the presence of a foreign object;
an interfacing means to interface said first sensing means with said power operated machine so the intitial motion of the reciprocating part will be stopped when the foreign object is sensed;
a second electrically conductive sensing means secured to said safety gate to sense the presence of a conductive workpiece; and
means for connecting said second conductive sensing means to said power operated machine through said conductive workpiece and said interfacing means for continuing the initial motion of said reciprocating part while said second sensing means is in contact with said workpiece.
0 Assignments
0 Petitions
Accused Products
Abstract
A safety gate, made of electrically conducting and non-conducting materials, is mounted to the ram, or similar instrument, of a power operated machine and is made to be free floating in at least one direction. The means of powering the machine may be electrical, mechanical, hydraulic, or pneumatic; however, there must be an electrical source available. The gate contains a means of sensing the presence of the workpiece and foreign objects which is powered by the electrical source; this means is connected to the machine in such a manner that the machine will be caused to stop or reverse if a foreign object, such as a human extremity, is sensed. A stationary guard shields those danger areas on the machine not protected by the safety gate.
-
Citations
16 Claims
-
1. A safety guard for a power operated machine, which machine utilizes a reciprocating part, including a working tool, located above a fixed bed for supporting a workpiece, comprising;
-
a safety gate mounted to the reciprocating part by a connecting means and made to be free floating in at least one direction, said gate being spaced from said reciprocating part and movable in a path parallel to said working tool; a first sensing means actuated by movement of said safety gate to sense the presence of a foreign object; an interfacing means to interface said first sensing means with said power operated machine so the intitial motion of the reciprocating part will be stopped when the foreign object is sensed; a second electrically conductive sensing means secured to said safety gate to sense the presence of a conductive workpiece; and means for connecting said second conductive sensing means to said power operated machine through said conductive workpiece and said interfacing means for continuing the initial motion of said reciprocating part while said second sensing means is in contact with said workpiece. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification