Vandal resistant and tamper proof pneumatic push button assembly

Details Vandal resistant and tamper proof pneumatic push button assembly Vandal resistant and tamper proof pneumatic push button assembly

1986-01-28

1987-07-28

Garrett, Robert E.

Expansible chamber devices

Collapsible chamber wall portion

Wall portion formed of flexible material

92169, 4407, 4408, F01B 1900, F16J 300

Patent

active

046825339

ABSTRACT:
A push button assembly for moving a volume of fluid out of and into a port. The assembly has a housing containing a rubber-domed diaphragm. The domed diaphragm is designed so that it is deformable but readily returns to its original shape. The pressing of the push button depresses the diaphragm, thereby forcing air or other fluid out of the exit port. When the button is released, the diaphragm returns to its original shape pulling fluid back through the port.

REFERENCES:
patent: 1819947 (1931-08-01), DeLauaud
patent: 1973170 (1934-09-01), Jacobi
patent: 2192548 (1940-03-01), Gunderson
patent: 2267218 (1941-12-01), Reinecke
patent: 2781784 (1957-02-01), Baker
patent: 2908290 (1959-10-01), Hamilton-Peters et al.
patent: 3107127 (1963-10-01), Cheureux et al.
patent: 3117588 (1964-01-01), Billeter
patent: 3218978 (1965-11-01), Kalert, Jr.
patent: 4021157 (1977-05-01), Elderfield
patent: 4304015 (1981-12-01), Hubatka

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