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Coin operated timing device

  • US 3,900,093 A
  • Filed: 07/25/1974
  • Issued: 08/19/1975
  • Est. Priority Date: 07/25/1974
  • Status: Expired due to Term
First Claim
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1. A coin operated electrical apparatus for providing uninterrupted service comprising:

  • a timing motor having a shaft adapted to rotate 360* in a substantially given time period, an eccentric cam fixedly attached to said shaft, a cam follower controlled by said eccentric cam and restrained to move in a linear direction, said cam follower has a bifurcated portion defining a pair of spaced-apart arms, said spaced apart arms located in a spaced relationship free and clear of said eccentric cam, each of said spaced-apart arms having an anchoring pin for supporting a pair of heavy duty resilient springs and in which said eccentric cam is forced between said resilient springs whereby rotation of said cam moves said cam follower, a coin chute for accepting a plurality of similarly sized coins, a switch connected in circuit with said timing motor and having an operating arm disposed in said coin chute whereby a coin placed in said chute will contact said arm, close said switch, and operate said timing motor, and a pin fixedly attached to said cam follower and positioned to enter said coin chute and support said plurality of coins in excess of one, said cam follower having a bifurcation defining a lower portion disposed in said coin chute for supporting coins and an upper portion for interfering with said operating arm when a coin is released.

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