John M Schultz

US Patent:

6423260, Jul 23, 2002

Filed:

Mar 21, 2000

Appl. No.:

09/531736

Inventors:

Richard P. Chartoff - Cincinnati OH
John W. Schultz - Alpharetta GA
Jill S. Ullett - Dayton OH

Assignee:

University of Dayton - Dayton OH

International Classification:

B29C 3508

US Classification:

264401, 264435, 264494

Abstract:

A method and apparatus for producing ordered parts by from non-ordered liquid crystal monomers. Liquid crystal monomers contain stiff, rod-like mesogenic segments which can be aligned by an external force such as shear, electric field or magnetic field, causing an anisotropy in properties. When cured in the aligned stated by photopolymerizing the aligned monomers the anisotropic structure is âlocked inâ resulting in materials with anisotropic physical and mechanical properties. The rigid structure of the mesogenic segments can result in cured networks with high glass transition temperatures if the spacer groups which connect the mesogenic core with the reactive end groups are kept short. Glass transition temperatures of postcured parts ranged from 75 to 148Â C. depending on resin and processing conditions.

US Patent:

55706339, Nov 5, 1996

Filed:

Mar 27, 1995

Appl. No.:

8/410920

Inventors:

John E. Schultz - Loveland OH
John M. Schultz - Loveland OH

Assignee:

COMCO Machinery, Inc. - Milford OH

International Classification:

B41F 506
B41F 1340

US Classification:

101182

Abstract:

An automated printing press (10) is provided with a plurality of printing stations (13), each having a printing mechanism (60) which prints at least one component image at spaced apart locations along a web (11). Each printing mechanism (60) is positionable to one side of the press for servicing. The print roller (61) is driven through a swingable gear assembly (268) that maintains gear spacing as the print roller to impression roller spacing varies and that engages and disengages tangentially to improve meshing. Microprocessor based computer controllers (400, 405) at each station (13) precisely and repeatably control positions of the printing mechanism (60) and precisely register the component images being printed at the stations (13). Each station controller (407) precisely maintains registration of the printing rollers (61) among the stations (13) and with respect to a preprinted component part of a composite image on a web (11) that may have been removed from and reinserted into the press (10) and deformed such that repeat lengths along the length of the web (11) may have changed. Measurements are made by sensors (350) of a series of repeat lengths on the web (11), a regression analysis is performed and a prediction is made of a constant or recurring component to be corrected in the next image to be encountered at each respective station (13).

US Patent:

61173851, Sep 12, 2000

Filed:

Aug 3, 1998

Appl. No.:

9/128078

Inventors:

Richard P. Chartoff - Cincinnati OH
John W. Schultz - Centerville OH
Jill S. Ullett - Dayton OH

Assignee:

The University of Dayton - Dayton OH

International Classification:

B29C 3508
B29C 4102

US Classification:

264401

Abstract:

A method and apparatus for producing ordered parts by stereolithography from non-ordered liquid crystal monomers. Liquid crystal monomers contain stiff, rod-like mesogenic segments which can be aligned by an external force such as shear, electric field or magnetic field, causing an anisotropy in properties. When cured in the aligned stated by photopolymerizing the aligned monomers the anisotropic structure is "locked in" resulting in materials with anisotropic physical and mechanical properties. The rigid structure of the mesogenic segments can result in cured networks with high glass transition temperatures if the spacer groups which connect the mesogenic core with the reactive end groups are kept short. Glass transition temperatures of postcured parts ranged from 75 to 148. degree. C. depending on resin and processing conditions.

US Patent:

54027217, Apr 4, 1995

Filed:

May 13, 1993

Appl. No.:

8/064751

Inventors:

John E. Schultz - Loveland OH

Assignee:

Comco Machinery, Inc. - Milford OH

International Classification:

B41F 2700

US Classification:

1013891

Abstract:

A printing plate roller including a cylindrical tube and two journaled end caps plugging opened ends of the cylindrical tube, thereby forming a vacuum chamber within the tube. At least one groove is formed in the outer surface of the cylindrical tube with at least one bore hole formed through the wall of the tube interconnecting the at least one groove with the vacuum chamber. It is desirable for a plurality of such grooves to be formed in the outer surface of the cylindrical tube. The vacuum chamber is connectable to a vacuum producing source.