1
Gary C Causley, Martin D Rosback: Ink cartridge with ink level sensor. Tektronix, John D Winkelman, David P Peterson, November 5, 1985: US04551734 (69 worldwide citation)

An ink cartridge 10 includes an ink level sensor 38 having a probe supporting structure, such as platform 174, which projects into a collapsible ink container 16 from an ink container support 18. First and second electrical probes 40, 41 are embedded within the structure, with tip portions 188, 190 ...


2
Jeffrey J Anderson, John S Moore, Ted E Deur, Joy Roy: Manufacture of ink jet print heads by diffusion bonding and brazing. David P Peterson, Robert S Hulse, November 28, 1989: US04883219 (68 worldwide citation)

A first surface of a first metal component of an ink jet print head is bonded to a second surface of a second metal component of the ink jet print head, the first and second surfaces being of materials having the same or similar coefficients of thermal expansion. A layer of filler material is electr ...


3
Douglas M Boudon, Jim Gottsch: Sheet metal knock-out. Tektronix, David P Peterson, Robert S Hulse, April 25, 1989: US04825339 (30 worldwide citation)

A knock-out in the wall of the housing for electronic equipment is selectively removed to provide a knock-out opening. A wall includes first and second slits positioned along the boundary of the knock-out and separated by a land. The wall includes a break out opening adjacent to each land. Break por ...


4
Brian Boso, Gerhard J Beenen, Bruce Murdock: Method of manufacturing an ink jet head. Tektronix, John D Winkelman, David P Peterson, August 11, 1987: US04685185 (14 worldwide citation)

An aperture plate for an ink jet head is formed by micro electrical discharge machining one surface of the plate to form a dimple-like recess with a relatively wide flat base. An aperture is then formed through the plate in the region of the dimple, as by micro electrical discharge machining. In one ...