One piece plastic molded structural unit and door knocker constr

Details One piece plastic molded structural unit and door knocker constr One piece plastic molded structural unit and door knocker constr

1977-06-29

1978-08-22

Yasich, Daniel M.

Signals and indicators

Bells

116DIG12, 425806, G01K 126, B28B 2100

Patent

active

041081048

ABSTRACT:
A one piece molded synthetic organic resin structure including a base and an arm connected thereto at spaced apart points by thin struts easily severed to separate the arm from the base. Connection means are provided on the arm and the base so that one end of the arm can be fixedly connected to the base leaving a free end of the arm overlying a portion of the base, the free end normally being urged against and in contact with the base. The arm is sufficiently flexible to permit the free end to be bent away from the base without breaking the arm, the release of the arm resulting in a snap movement thereof against the base causing a loud noise.

REFERENCES:
patent: D211566 (1968-07-01), Gragg
patent: 602573 (1898-04-01), Coggeshall
patent: 1266875 (1918-05-01), Smith
patent: 3068835 (1962-12-01), Stewart
patent: 3172588 (1965-03-01), Bertold et al.
patent: 3230921 (1966-01-01), Spiegel

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