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Fred Thomas Fred Thomas
Thomas Fred Charles, Bero James, Short Robert, Johnson Paul R: Apparatus for and method of verifying etching of optical servo information on magnetic media.. Minnesota Mining & Mfg, March 29, 1995: EP0645043-A1 (4 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 occured. A light source (40) provides a collimated incident beam of light (42). The incident beam is focused to a point on the medium (57) and ...


2
Fred Thomas Fred Thomas
Johnson Paul R, Bero James, Carter Jeff G, Candia Anthony M, Kieger George T, Hales Ronald F, Thomas Fred C Iii: A method of and apparatus for removing debris from the floptical medium.. Minnesota Mining & Mfg, April 12, 1995: EP0647170-A1

A method and apparatus for removal of particulate waste materials or debris (10) from the floptical medium (1) after laser etching. A low temperature gas containing ice crystals (4) is applied at a predetermined angle while the floptical medium (1) is being rotated to improve the cleaning effect. Th ...


3
Fred Thomas Fred Thomas
Thomas Fred Charles, Johnson Paul R: Pneumatic hub locking device for etching optical servo tracks on magnetic disks. Minnesota Mining And Manufacturing Company, KURTZ Richard E, December 23, 1993: WO/1993/025343

An apparatus for etching optical servo tracks on a magnetic storage disk (11) comprises optics for generating a beam of light for etching the servo tracks and a spindle (15) for rotating the disk (11) in proximity to the optics. The device further comprises a center pin (16) at the center of rotatio ...


4
Fred Thomas Fred Thomas
Thomas Fred Charles, Bero James, Short Robert, Johnson Paul R: Apparatus for and method of verifying etching of optical servo information on magnetic media. Minnesota Mining And Manufacturing Company, KURTZ Richard E, December 23, 1993: WO/1993/026004

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 occured. A light source (40) provides a collimated incident beam of light (42). The incident beam is focused to a point on the medium (57) and ...


5
Fred Thomas Fred Thomas
Johnson Paul R, Bero James, Carter Jeff G, Candia Anthony M, Kieger George T, Hales Ronald F, Thomas Fred C Iii: A method of and apparatus for removing debris from the floptical medium. Minnesota Mining And Manufacturing Company, KURTZ Richard E, January 6, 1994: WO/1994/000274

A method and apparatus for removal of particulate waste materials or debris (10) from the floptical medium (1) after laser etching. A low temperature gas containing ice crystals (4) is applied at a predetermined angle while the floptical medium (1) is being rotated to improve the cleaning effect. Th ...


6
Fred Thomas
Thomas Fred Charles, Johnson Paul R: Pneumatic hub locking device for etching optical servo tracks on magnetic disks.. Minnesota Mining & Mfg, June 7, 1995: EP0655960-A1 (13 worldwide citation)

An apparatus for etching optical servo tracks on a magnetic storage disk (11) comprises optics for generating a beam of light for etching the servo tracks and a spindle (15) for rotating the disk (11) in proximity to the optics. The device further comprises a center pin (16) at the center of rotatio ...


7
Templin Robert J, Johnson Paul R, Falberg Robert F: Exhaust emission control. General Motors Corporation, February 29, 1972: US3645098 (45 worldwide citation)

Internal combustion engine exhaust gases, passing unreacted through an exhaust gas catalytic or thermal reaction device during the warmup period of the device, are directed to an expansible container which retains the entire flow of exhaust gases or to a container of filter, adsorptive and absorptiv ...


8
Johnson Paul R: Automatic sampler. Harsco Corporation, Cameron Kerkam Sutton Stowell & Stowell, April 29, 1975: US3880011 (23 worldwide citation)

Apparatus to draw a sample of metered volume from a source of liquid comprising a cylinder having a sample inlet line leading thereinto and having a pneumatically actuated discharge valve in the lower end thereof through which the sample is dispensed. An air compressor has a suction side connected t ...


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Miller Clarence D, Johnson Paul R: Sliding radial key support for LNG ship tanks. Chicago Bridge & Iron Company, Merriam Marshall Shapiro & Klose, September 30, 1975: US3908574 (13 worldwide citation)

In a ship having a cargo tank, with a circular horizontal cross-section, which expands and contracts in service, supported therein, the improved tank support system comprising a plurality of spaced-apart support keys mounted on and located around the periphery of the tank in a substantially horizont ...



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