Gerald W Seliga

US Patent:

41955633, Apr 1, 1980

Filed:

Jun 30, 1978

Appl. No.:

5/920714

Inventors:

Tadas Budraitis - Midlothian IL
Gerald W. Seliga - Frankfort IL

Assignee:

Productronix, Inc. - Oak Forest IL

International Classification:

G01L 116

US Classification:

100 99

Abstract:

An improved instrument for measuring and indicating the load experienced during a cycle of a machine, as a reciprocating press. A piezoelectric transducer mounted on the press provides a signal which is proportional to the press frame deformation during operation. In one aspect of the instrument, the signal from the transducer is amplified and compared with reference voltages representative of excessive machine load and a minimum load level. During each cycle of operation either a NORMAL, UNDER or OVER (LOW, OK or HI) indicator is actuated. The NORMAL indicator remains on so long as the machine load is within the selected limits represented by the reference voltage. A safety circuit stops the press when an excessive load is experienced. In another aspect of the instrument, the reverse load experienced by the machine is detected.

US Patent:

46711244, Jun 9, 1987

Filed:

Apr 3, 1986

Appl. No.:

6/847914

Inventors:

Gerald W. Seliga - Frankfort IL

Assignee:

Productronix, Inc. - Oak Forest IL

International Classification:

G01D 112

US Classification:

7386253

Abstract:

A load monitor for a cyclic machine has a peak load signal detector the output of which is displayed indefinitely on an analog meter. On each cycle of the machine, the analog load signal is converted to a digital signal and the digital signal is converted to an analog signal connected with the analog meter. Overload and underload reference signals are established during a selected single cycle of machine operation.

US Patent:

45585334, Dec 17, 1985

Filed:

Feb 28, 1984

Appl. No.:

6/584518

Inventors:

Gerald W. Seliga - Frankfort IL

International Classification:

F41C 2300

US Classification:

42 71P

Abstract:

A pistol grip for use with a pistol having a barrel with a predetermined line of flight of a bullet and a predetermined center of gravity, including a grip which is affixed to the pistol, a platform extending from the grip, and a support portion of the platform extending away from the grip such that at least one point of the support portion of the platform is vertically below the center of gravity when the line of flight of a bullet is raised 5. degree. from horizontal.

US Patent:

42742820, Jun 23, 1981

Filed:

Jun 25, 1979

Appl. No.:

6/051852

Inventors:

Tadas Budraitis - Midlothian IL
Gerald W. Seliga - Frankfort IL

Assignee:

Productronix, Inc. - Oak Forest IL

International Classification:

G01L 500

US Classification:

7386264

Abstract:

An improved instrument for measuring and indicating the load experienced during a cycle of a machine, as a reciprocating press. A piezoelectric transducer mounted on the press provides a signal which is proportional to the press frame deformation during operation. In one aspect of the instrument, the signal from the transducer is amplified and compared with reference voltages representative of excessive machine load and a minimum load level. During each cycle of operation either a NORMAL, UNDER or OVER (LOW, OK or HI) indicator is actuated. The NORMAL indicator remains on so long as the machine load is within the selected limits represented by the reference voltage. A safety circuit stops the press when an excessive load is experienced. In another aspect of the instrument, the reverse load experienced by the machine is detected.

US Patent:

43099076, Jan 12, 1982

Filed:

Feb 14, 1980

Appl. No.:

6/121811

Inventors:

Tadas Budraitis - Midlothian IL
Gerald W. Seliga - Frankfort IL

Assignee:

Productronix, Inc. - Oak Forest IL

International Classification:

G01B 718
G01L 516

US Classification:

73771

Abstract:

A load monitor for a reciprocating machine having a selective sensor connection for monitoring the total load or the individual load on each machine support member. A sensor is mounted on each one of a pluralityof support members. The sensors are connected in series and to an outlet through which a portable detector may be connected. A multi-position switch selectively connects the sensors to the outlet so that the total load or the individual load on each support member may be monitored.