Electric motor control based on conductive contact of machine component with operator for injury prevention
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 23, 1996
Grant Date -
N/A
app pub date -
Jul 22, 1994
filing date -
Jul 29, 1993
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A unit for controlling the operation of the electric motor is provided together with a control device, electrically connected to the body of the operator, to act on the control unit via a relay means in such a manner as to halt and reverse the rotation of the electric motor following conductive contact between the operator's body and the metal component. For receiving and supporting the feet of the operator, two conductive plates insulated from the ground are provided in such a position that the operator rests his feet via conductive shoes on them when working with the machine. The plates are connected to the control device, and the metal component is electrically connected to earth. The support plates are electrodes for the passage of low voltage electric current from one plate to the other via the body of the operator. The control device stops the motor following conductive contact between the operator's hands and the metal component.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully