Title: Grid support means for a planar tube

Abstract: A grid electrode for an electron tube with planar electrodes consists of a planar array of fine wires mounted on a support frame. The support frame has a circular outside rim and interconnected interior elements dividing the area inside the rim into three or more separated apertures. The interior elements include radial elements connected to non-radial elements, forming a mechanically rigid structure with good heat conduction to the outside rim which resists buckling out of its plane when differentially heated.

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Inventors: Hardman, Wendell G. (Salt Lake City, UT, US)
Brunhart, Werner (Salt Lake City, UT, US)

Application Number: 489690
Filing Date: 1974-07-18
Publication_date: 1976-01-20
Assignee: Varian Associates (Palo Alto, CA)
Primary Class(es): 313/293 313/287, 313/296, 313/348
Other Classes:
US Patent Ref:

2460381	Feb, 1949	Forgue	313/348.
3238410	Mar, 1966	Beggs	313/348.
3334263	Aug, 1967	Beggs	313/348.
3500107	Mar, 1970	Beggs	313/348.
3800378	Apr, 1974	Lee et al.	313/348.

Other Refs:
Primary Examiner: Chatmon, Jr., Saxfield
Assistant Examiner:
Attorney: Cole; Stanley Z., Pressman; D. R., Stoddard; R. K.