Fred Thomas Fred Thomas
Fred C Thomas, Paul R Johnson: Pneumatic hub locking device for etching optical servo tracks on magnetic disks. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, June 21, 1994: US05322987 (22 worldwide citation)

An apparatus for etching optical servo tracks on a magnetic storage disk comprises optics for generating a beam of light for etching the servo tracks and a spindle for rotating the disk in proximity to the optics. The device further comprises a center pin at the center of rotation of the spindle and ...

Fred Thomas Fred Thomas
Fred C Thomas, James Bero, Robert Short, Paul R Johnson: Apparatus for and method of verifying etching of optical servo information on magnetic media. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, August 2, 1994: US05334849 (10 worldwide citation)

An apparatus and method for etching a point on the surface of a magnetic medium to reduce the reflectivity of the point and for verifying that proper etching occurred. A light source provides a collimated incident beam of light. The incident beam is focused to a point on the medium and a portion of ...

Fred Thomas Fred Thomas
Paul R Johnson, James Bero, Jeff G Carter, Anthony M Candia, George T Kieger, Ronald F Hales, Fred C Thomas III: Method of and apparatus for removing debris from the floptical medium. Minnesota Mining and Manufacturing Company, Gary L Griswold, Walter N Kirn, Eric D Levinson, May 30, 1995: US05419733 (6 worldwide citation)

The current invention substantially removes particulate waste materials or debris from the floptical medium after laser etching. A low-temperature gas containing ice crystals is applied at a predetermined angle while the floptical medium is being rotated to improve the cleaning effect. The temperatu ...

Eliot S Lassow, Paul R Johnson, Sidney R Whitaker, Manuel Guerra Jr: Ceramic shell mold facecoat and core coating systems for investment casting of reactive metals. Howmet Turbine Components Corporation, Finnegan Henderson Farabow Garrett & Dunner, November 3, 1987: US04703806 (56 worldwide citation)

An yttria-based slurry comprising a dense grain yttria powder and a non-aqueous-based binder is used as a mold facecoat and corecoat for investment casting of reactive metals such as titanium and titanium alloys.

Paul R Johnson, Eliot S Lassow: Ceramic shell mold for investment casting and method of making the same. Howmet Corporation, Finnegan Henderson Farabow Garrett & Dunner, October 30, 1990: US04966225 (32 worldwide citation)

A ceramic shell mold and method of making the same. The ceramic shell mold includes a facecoat layer comprised of a first ceramic material. A plurality of alternating layers are formed overlaying the facecoat layer. The alternating layers are comprised of a second ceramic material and a third cerami ...

Kelly D Christensen, Paul R Johnson, Weston F Harding, Troy A Ekberg, Greg L Brimhall, Tom M Miner: Vascular access device housing venting. Becton Dickinson and Company, Mony R Ghose, Kirton & McConkie, November 29, 2011: US08066669 (24 worldwide citation)

A Luer access device may include a housing, a septum, and a gas permeable vent in communication with at least a portion of the housing for venting gas from an extravascular system. A method of venting a medical device may include providing a gas permeable vent within a Luer access device as part of ...

Stephen Chin, Donald R Parille, Paul R Aimone, Robert L McCormick, Paul R Johnson, Bart M Kilinski: Oxidation resistant superalloy castings. Howmet Corporation, United Technologies Corporation, Flynn Thiel Boutell & Tanis, August 9, 1994: US05335717 (17 worldwide citation)

The oxidation resistance of a superalloy casting such as an equiaxed, directionally solidified, or single crystal casting, is improved by melting, pouring, or casting the alloy so as to react with a magnesium or calcium-bearing ceramic material. Magnesium or calcium is introduced into the alloy thro ...

Paul R Johnson, James Bero, Jeff Heitzman: Exhaust and particle wastes collecting device for laser etching. Iomega Corporation, Woodcock Washburn Kurtz Mackiewicz & Norris, November 8, 1994: US05362941 (12 worldwide citation)

The current invention provides an apparatus and method of collecting waste materials produced during laser etching of a floptical medium without blocking access to the medium surface. The invention also improves collection efficiency by applying a uniform low-pressure air around the outer edge of th ...

Paul R Johnson: Offshore crane wave motion compensation apparatus. Shell Oil Company, October 1, 1985: US04544137 (10 worldwide citation)

Motion compensated load-lifting apparatus for use on marine vessels. Apparatus includes a traveling weight used to maintain tension in the load-lifting member, and a locking mechanism to prevent movement of the traveling weight in one direction. The locking mechanism, such as a ratchet and pawl, can ...

Paul R Johnson: Systems and methods of monitoring exercises and ranges of motion. Honeywell International, Husch Blackwell, October 4, 2011: US08029411 (9 worldwide citation)

Systems and methods are provided for remotely a monitoring an individual's ability to carry out a various exercise activities and to evaluate the individual's range of motion. The individual can stand or sit in the field of view of the camera and carry out a set of base line activities. The baseline ...