ROBERT DEAN RASMUSSEN, DO
Emergency Medical Service at Pearl Rd, Cleveland, OH

5808904, Sep 15, 1998

Nov 7, 1996

8/744981

Steven F. Rasmussen - Lyndhurst OH
Robert F. Rasmussen - South Euclid OH
Steven G. Belovich - Hinckley OH

Angstrom Corporation - Euclid OH

G01B 716

364528

An apparatus (20) for press operation data acquisition comprises a tie rod (45a) for bearing a load during a press cycle. The rod (45a) has a load bearing portion (76) and a non-load bearing portion (78). An elongated, axially extending bore (75) is formed in one end (62) of the rod (45a) such that the bore (75) extends from the non-load bearing portion (78) into the load bearing portion (76). A linear variable differential transformer (LVDT) (24), includes a core portion (114) movably disposed relative to a coil portion (118), such that magnetic flux generated by current impression on the coil portion (118) is influenced by a position of the core portion (114) relative thereto. The core portion (114) is secured to a shaft (80). The shaft (80) is adapted for axial movement within the bore (75) in response to deformation of the rod (45a) during press operation. The coil portion (118) is adapted to receive an electric signal current from an associated electric source.

RE35996, Dec 15, 1998

Aug 8, 1997

8/907851

Robert F. Rasmussen - South Euclid OH

G01B 716

702 43

A continuous duty press monitoring system includes a linear variable displacement transducer mounted to a press frame as to acquire data related to stresses and strains in the press housing due to completion of a press operation. First and second oppose, spaced apart ends of a rod member are secured to the press housing or frame. The first send is secured to so as to cause axial movement of the rod in accordance with the frame movement at that point. The second portion is secured to the housing so as to allow the second end to be slidable in relation thereto. A linear variable displacement transducer is secured at the slidably affixed end of the rod. A magnetic flux generated by application of current to a coil of the transducer is affected by relative positioning of the rod thereto. Press operation thereby provides an indication, due to stresses or strains resultant on the press housing, as to the characteristics of a particular press operation. Flux variations provide an analog signal representative of these press characteristics.

5440499, Aug 8, 1995

Feb 18, 1993

8/019017

Robert F. Rasmussen - South Euclid OH

G01B 716

36455101

A continuous duty press monitoring system includes a linear variable displacement transducer mounted to a press frame as to acquire data related to stresses and strains in the press housing due to completion of a press operation. First and second opposed, spaced apart ends of a rod member are secured to the press housing or frame. The first send is secured to so as to cause axial movement of the rod in accordance with the frame movement at that point. The second portion is secured to the housing so as to allow the second end to be slidable in relation thereto. A linear variable displacement transducer is secured at the slidably affixed end of the rod. A magnetic flux generated by application of current to a coil of the transducer is affected by relative positioning of the rod thereto. Press operation thereby provides an indication, due to stresses or strains resultant on the press housing, as to the characteristics of a particular press operation. Flux variations provide an analog signal representative of these press characteristics.