Ammunition and explosives – Igniting devices and systems
Patent
1979-04-04
1981-09-29
Jordan, Charles T.
Ammunition and explosives
Igniting devices and systems
102210, 310348, F42C 1102
Patent
active
042916267
ABSTRACT:
A piezoelectric element unit and sheet metal mount therefor has a window opening for readily mounting the unit therein without the necessity for using tools and for stably holding it despite repetitive beating by the hammer of the actuation mechanism. The unit is formed as a cylinder with a pair of opposite grooves axially extending in or on the circumferential surface of the unit so as to engage the side edges of said window. When the grooves are cut directly in the circumferential wall of the unit, a second window formed to be interconnected with the aforementioned window for mounting the actuation mechanism is designed to have a width longer than the diameter of the unit so that the unit is first located in the second window and then slid into the first window. When the grooves are formed by two rows of upper and lower axial protrusions therebetween, notches are formed at the opposite edges of the window so that either of the upper and lower protrusions may clear the notches in order that the unit may be slid into its final position.
REFERENCES:
patent: 3466474 (1969-09-01), Ochiai
patent: 3963966 (1976-06-01), Mohr
Jordan Charles T.
Morrison Thomas R.
NGK Spark Plug Co. Ltd.
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