Safety device for powered machinery
US5148053A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 1991 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Feb 21, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S83/01
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
This invention provides a safety device for powered machinery comprising a conventional wire mesh safety glove adapted for wearing by the machine operator. The machine with which it is used has a grounded frame, an electrical motor, a control switch, with the electrical motor being connected to a source of electrical energy through the control switch. A control safety circuit connects the electro conducting wire mesh safety glove and by-passes the conventional control switch for the machine which is in turn connected to the motor of the machine. The safety circuit includes a circuit breaking means, preferably a relay, whereby the relay will open and deprive the motor from electrical power whenever the wire mesh glove comes in contact with the grounded frame of the machine. An alternate form of the invention connects the wire mesh glove of the operator to the antenna of a radio transmitter worn by the operator. The circuit breaking means includes a radio receiver means which remains closed when receiving a radio signal, but which will open when the antenna of the radio transmitter is grounded to the frame through the wire mesh glove touching the frame which serves to interrupt the t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.