Communications: electrical – Condition responsive indicating system – Specific condition
Reexamination Certificate
2006-05-23
2006-05-23
Mullen, Thomas (Department: 2632)
Communications: electrical
Condition responsive indicating system
Specific condition
C192S130000, C340S540000
Reexamination Certificate
active
07049967
ABSTRACT:
Safety system for a manufacturing machine provided with at least one tool which can injure the operator, comprising a pair of gloves to be worn by the operator and provided with an outer surface of dielectric material and an electrically conductive inner surface; an alarm signal generator connected to the conductive inner surface; a processor unit connected to the metal machine members and to the at least one tool via a safety circuit arranged to sense the alarm signal when the operator cuts one of the gloves on coming into contact with one of the mechanical members of the machine, the processor unit being provided with circuitry for interrupting machine operation on sensing said alarm signal, in which the alarm signal is an alternating current signal the intensity of which is established by the processor unit on the basis at least of at least one of the physical characteristics of the operator, e.g. the electrical conductivity, as measured by a suitable circuit for determining at least this characteristic.
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Grasselli Giorgio
Santini Stefano
Browdy and Neimark PLLC
Mullen Thomas
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