David Alan Willis

US Patent:

58743154, Feb 23, 1999

Filed:

Mar 5, 1996

Appl. No.:

8/611388

Inventors:

Jeffrey A. Kraft - Cincinnati OH
Ching Sui A. Yi - Cincinnati OH
David Huntington Willis - Cincinnati OH

Assignee:

Meridian Diagnostics, Inc. - Cincinnati OH

International Classification:

G01N 130

US Classification:

436176

Abstract:

A method for staining fecal specimens to diagnose stool parasites preserved with a non-mercury fixative wherein the preserved specimen is stained with a composition of iron hematoxylin stain and trichrome stain.

US Patent:

42830621, Aug 11, 1981

Filed:

Dec 26, 1979

Appl. No.:

6/106968

Inventors:

James R. Catanzaro - Cincinnati OH
August R. Meyer - Cincinnati OH
David L. Willis - Hillsboro OH

Assignee:

Cincinnati Milacron Inc. - Cincinnati OH

International Classification:

F16J 1518

US Classification:

277 12

Abstract:

A stuffing box as applied to the sliding joint between the piston (ram) and cylinder of a hydraulic ram assembly in a hydraulic injection molding machine has a packing retainer assembly with a retainer ring with a protruding gland that extends into the stuffing box thereby to act as a pilot means to insure concentricity between the stuffing box, gland, and ram. In addition, the inside diameter of the gland has a support bushing groove in which is mounted a support bushing that has an inside diameter less than the inside diameter of the gland and which is fitted in sliding bearing relationship to the outside diameter of the ram and held there by the gland. The support bushing is preferably manufactured in two pieces from a fiber reinforced low friction resin selected from the class consisting of thermosetting resin and thermoplastic resin more preferably phenol formaldehyde and polytetrafluoroethylene.

US Patent:

46732020, Jun 16, 1987

Filed:

Sep 16, 1985

Appl. No.:

6/776571

Inventors:

David P. Willis - Houston TX

International Classification:

E05C 116

US Classification:

292162

Abstract:

A door locking device is provided for securing a door with a dead bolt having a thumb knob on the inside of the door for throwing a dead bolt into a striker plate with the door jamb. The door locking device has a support body attached to the inside of the door, a dead bolt slide slidably engaged with the support body, and a keeper attached to the door jamb with at least one keeper hole lying in a plane substantially perpendicular to the plane of the door in the closed position. The dead bolt slide provides a second dead bolt locking function by engaging the keeper while simultaneously rendering the dead bolt lock within the door unopenable with a restriction means that restricts rotation of the thumb knob from its locked position.