Method of and device for sensing the presence or absence of an a

Details Method of and device for sensing the presence or absence of an a Method of and device for sensing the presence or absence of an a

1986-04-14

1987-08-04

Rosenbaum, Mark

Metal working

Method of mechanical manufacture

Electrical device making

29740, 73 37, 414744B, 414752, H05K 330, B23P 1900, G01M 302

Patent

active

046836543

ABSTRACT:
A method of and a device for sensing the presence or absence of an electrical or electronic component at the end of a vacuum pick-up means. In the absence of a component, the air flow produced by the vacuum is converted into an acoustic signal which indicates the absence of the component.

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patent: 4252076 (1981-02-01), Williams
patent: 4261681 (1981-04-01), Gates
patent: 4292116 (1981-09-01), Takahashi et al.
patent: 4372802 (1983-02-01), Harigane et al.

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