SAFETY SYSTEMS FOR POWER EQUIPMENT

• US 20150217421A1
• Filed: 01/31/2014
• Published: 08/06/2015
• Est. Priority Date: 02/08/2013
• Status: Abandoned Application

• Current Assignee: SD3, LLC
• Original Assignee: SD3, LLC
• Inventors: Gass, Stephen F.
• Application Number:
  US14/170,539
• Publication Number:
  US 20150217421A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B23D 59/001 Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade measuring in general G01; controlling in general G05
• CPC Class Codes: B23Q 11/0082 by determining whether the operator is in a dangerous position B23Q17/2438 takes precedence
• CPC Class Codes: B23Q 17/2438 of an operator or a part thereof
• CPC Class Codes: B26D 7/24 arranged to disable the operating means for the cutting member
• CPC Class Codes: B27G 19/00 Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
• CPC Class Codes: B27G 19/02 for circular saws
• CPC Class Codes: F16P 3/141 using sound propagation, e.g. sonar
• CPC Class Codes: F16P 3/144 using light grids
• CPC Class Codes: Y10T 83/081 With randomly actuated stopping means

Abstract

Woodworking machines including a blade to cut a workpiece and a detector to detect movement or position of at least part of a human body near the blade and a reaction system adapted to mitigate possible injury upon detection of a dangerous condition between the human and the blade.

Claims

1. A woodworking machine comprising:

a blade to cut a workpiece;

a motor to move the blade;

a detection system including a motion detector configured to detect a movement of at least a part of a human body near the blade; and

a reaction system adapted to perform a specified action to mitigate possible injury upon detection of the movement.

2. The woodworking machine of claim 1, where the motion detector includes a camera.

3. The woodworking machine of claim 1, where the motion detector includes an infrared camera.

4. The woodworking machine of claim 1, where the motion detector includes an infrared camera and an infrared LED.

5. The woodworking machine of claim 1, where the motion detector includes an ultrasonic sensor.

6. A woodworking machine comprising:

a blade to cut a workpiece;

a motor to move the blade;

motion detection means for detecting a movement of at least a part of a human body near the blade; and

a reaction system adapted to perform a specified action to mitigate possible injury upon detection of the movement.