| 摘要 |
1,187,900. Adjusting devices. BECKMAN INSTRUMENTS Inc. 30 April, 1968 [18 Oct., 1967], No. 20405/68. Heading H3Q. [Also in Division H1] A rotary or linear potentiometer or variable resistor has an operating shaft 31 supported in an opening of a wall 32 of its housing 33, the shaft being held against end movement by a ball 39 which is an interference fit in an opening 42 intersecting the shaft opening and which contacts a frusto-conical surface 40 on the shaft. The ball may be pressed into position down the opening 42 which may then be sealed with epoxy material.
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