Disk for revolution sensor having at least three engaging portio

Details Disk for revolution sensor having at least three engaging portio Disk for revolution sensor having at least three engaging portio

1992-06-08

1993-06-15

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

G01D 530

Patent

active

052201627

ABSTRACT:
Disclosed is a disk for a revolution sensor including: a disk-like base plate having a circular hole formed in a central portion thereof and a plurality of detection holes formed in an outer peripheral portion thereof; and a resin portion integrally secured to an inner peripheral portion of the base plate and provided with a holding hole. The holding hole has a diameter smaller than that of the circular hole and is formed coaxially with the circular hole. A plurality of notched portions are formed circumferentially at equal intervals in the inner peripheral portion of the base plate, and are integrally engaged with the resin portion. Accordingly, the relative movement of the base plate and the resin portion is prevented, and the circularity of the holding hole and the coaxiality of the holding hole with respect to the circular hole are improved.

REFERENCES:
patent: 4654522 (1987-03-01), Gornick et al.
patent: 5117104 (1992-05-01), Kobayashi et al.

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