Gary V Hanrahan

US Patent:

45368490, Aug 20, 1985

Filed:

Sep 8, 1982

Appl. No.:

6/415811

Inventors:

Donald J. Borisch - Cincinnati OH
Gary V. Hanrahan - Mason OH
Herbert E. Merritt - Cincinnati OH

Assignee:

Cincinnati Milacron Inc. - Cincinnati OH

International Classification:

G06F 1546

US Classification:

364550

Abstract:

A machine operation monitor is provided for detecting malfunctions during execution of a machine cycle of operation irrespective of the activity being performed. Load levels of machine member driving means are periodically sampled and compared against limits computed by the monitor. The limit calculation uses net force or torque measured by storing load level samples during two preparatory executions of the machine cycle of operation. During the first execution a finished workpiece is produced using good tools. During the second execution no workpiece is present. The differences between load level samples taken during these two executions represent the net force required to perform work on the workpiece. The monitor responds to synchronization signals to maintain correspondence between load level samples taken in successive executions of the machine cycle. The monitor also responds to monitor off signals to suspend monitor operation during periods of no activity in the machine cycle.

US Patent:

20150116877, Apr 30, 2015

Filed:

Oct 31, 2013

Appl. No.:

14/068419

Inventors:

- Schenectady NY, US
Gary Vincent Hanrahan - Louisville KY, US
Scott Jeffrey Hall - Louisville KY, US

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02H 3/05
H02H 3/02

US Classification:

361 68

Abstract:

Power distribution systems and methods are described. In one example, a method of testing a power distribution zone select interlocking system including a first circuit protection device and a second circuit protection device coupled to the first circuit protection device downstream of the first circuit protection device is described. The method includes receiving, by the second circuit protection device, an input instructing the second circuit protection device to test communication between the first circuit protection device and the second circuit protection device, and outputting, by the second circuit protection device, a blocking signal in response to the input. The first circuit protection display an indication of reception of the blocking signal to confirm proper interconnection of the zone select interlocking signals.