Frank J Dybel

40620557, Dec 6, 1977

Oct 17, 1975

5/623484

William P. Dybel - Olympia Fields IL
Frank R. Dybel - Olympia Fields IL

H01H 4732

361160

A load monitoring system for indicating and controlling loads cyclically applied to force carrying members, such as the members of production presses. The system includes a high load limit circuit adapted to energize an overload detector when the loading on the member exceeds a predetermined maximum value and a low load limit circuit adapted to activate an underload detector when the loading on the member fails to reach a predetermined minimum value during a loading cycle. The low load limit circuit includes a control rectifier that is rendered conductive for a predetermined short pulse during each loading cycle in which the minimum load is exceeded and solid state logic means responsive to the failure of the rectifier to trigger during a loading cycle for activating the underload detector. The high load limit circuit includes a control rectifier that is rendered conductive only during an overload condition and solid state logic means for activating the overload detector in response to triggering of the rectifier. Once an overload or underload occurs, the circuits are adapted to be maintained in an overload or underload detecting condition until manually reset, notwithstanding an interruption of the main power supply to the system.

41716469, Oct 23, 1979

Aug 22, 1978

5/935973

Frank R. Dybel - Olympia Fields IL
William P. Dybel - Olympia Fields IL

G01N 332

73808

A load monitoring system for monitoring loads that are cyclicaly applied to a force carrying member is disclosed. The load monitoring system comprises a transducer for sensing the loads exerted and a differential load monitoring circuit which receives the transducer signals, generates a normal load reference signal relating to previous load signals received and compares the normal load reference signal to the present load signal to determine when the present load exceeds the previous load by a predetermined amount for successive cycles of operation. The differential load monitoring circuit also includes an inhibit circuit which, during initial start-up of the cyclical load serves to inhibit the operation of the differential load monitoring circuit until such time as the normal load reference signals can be established. Furthermore, an absolute load monitoring circuit is provided which detects when the loads in the force carrying member have approached the capacity of the force carrying member or any predetermined maximum load.

41388984, Feb 13, 1979

Dec 30, 1977

5/865794

Frank R. Dybel - Olympia Fields IL

G01B 716

73767

A system for continuously monitoring both compressive and tension loads on a force carrying member. The system includes a transducer having a pair of physically aligned piezoelectric elements which each are adapted to sense changes in stresses in the load carrying member to produce electrical output signals which can be separately utilized by tension and compression load monitoring circuits. The illustrated system discloses a compression load monitoring circuit that is responsive to electrical output signals generated by one of the piezoelectric elements upon an increase in compressive stresses in the member and a tension load indicating circuit which is responsive to electrical signals generated by the other piezoelectric element upon an increase in tension stresses in the transducer.

40106799, Mar 8, 1977

May 12, 1969

4/832542

Frank R. Dybel - Calumet City IL

International Measurement & Control Co. - Park Forest South IL

B30B 1528

100 53

A piezoelectric transducer is positioned on a member of a power press subject to stress under dynamic conditions. A ball joint bracket means fixes and maintains the transducer on the member parallel with the direction of force and with the faces of the piezoelectric ceramic plate perpendicular thereto. The high voltage signal generated by the transducer is transmitted to a signal conditioning circuit and impressed upon the grid of a grid-controlled vacuum tube. If the conditioned signal is sufficient to overcome the biasing grid voltage, it activates an electric circuit for the performance of one or more functions, including stopping the power press in the case of an overload, counting the number of times the press is overloaded or the number of times a workpiece is produced, and measuring the press load during a work cycle.

46337202, Jan 6, 1987

Dec 17, 1984

6/682428

Frank R. Dybel - Olympia Fields IL
William P. Dybel - Olympia Fields IL

G01L 500
G01D 112

7386253

A press control system monitors and is responsive to the loads associated with individual die stations in a progressive die. The system detects chipped, dull, or excessively loaded portions of the progressive die and provides automatic quality monitoring of the parts produced by the press. The system provides a display of press load as a function of time scaled by the speed of the press. The press load as a function of time is automatically analyzed to determine and display the number of die stations and the peak loads associated with each die station in the progressive die. The peak loads are compared to limit values that depend in part on the past history of the press in order to monitor the condition of the progressive die and if necessary to shut down the press. The number and quality of parts produced by the press are also determined from the peak loads. Gradual wear of the die is monitored to determined when sharpening is required.

40488489, Sep 20, 1977

May 3, 1976

5/682463

Frank R. Dybel - Olympia Fields IL

G01B 716

73 885R

A load monitoring system for force carrying members, such as pitmans of production presses, which is adapted to indicate directly in tons the loading incurred by the member during its successive operating strokes. The system further includes load limiting means having a control dial with a numerical readout which when set to a selected number causes an overload detection means to be activated when the load on the member exceeds the number of tons set on said dial. Means are provided for permitting the indicator to register the maximum load the member sustains during an overload stroke and to hold that reading indefinitely.

43275915, May 4, 1982

Apr 30, 1980

6/145223

Frank R. Dybel - Olympia Fields IL
Kenneth MacDonald - Deerfield IL

International Measurement & Control Co. - Frankfort IL

G01L 116

73855

A magnetically mountable device for sensing deformation from loadings on machine members. The device includes a strain sensing transducer, brackets between which the transducer is supported, and magnetic bracket mounts which permit the transducer to be easily mounted on the machine member by virtue of magnetic attraction forces between the mounts and the force carrying member and yet be readily repositionable on the member so as to facilitate location of points of maximum stress concentrations during a working cycle of the machine.

43356141, Jun 22, 1982

Jun 19, 1980

6/160944

Frank R. Dybel - Olympia Fields IL
William F. Dybel - Olympia Fields IL
Kenneth MacDonald - Deerfield IL

International Measurement & Control Company - Frankfort IL

G01B 716

73774

A strain sensing device for measuring deformation experienced by a force carrying member. The transducer includes a strain sensing element, terminal blocks, and cable terminal connections all protectively contained within a water and contaminant resistant enclosure. The transducer enclosure includes a tubular sheath within which the sensing element and terminal blocks are housed, and a pair of rubber bushings located in opposed ends of the sheath and each formed with an axial passageway. A ball is tightly held in the axial passageway of each bushing for sealing the interior of the sheath while permitting the direct transmittal of forces to the sensing element via said balls and terminal blocks.