Tools – Wrench – screwdriver – or driver therefor
Patent
1976-12-15
1978-05-23
Jones, Jr., James L.
Tools
Wrench, screwdriver, or driver therefor
B25B 2314
Patent
active
040904210
ABSTRACT:
The invention relates to a spark plug tightener with a cylindrical housing having on one end a multi-faceted opening for engaging the spark plug and on the other end an annular shaped profile in front view through which passes a turning shaft with a corresponding profile in front view whereby the turning shaft is held under the tension of cup springs by means of a cover cap screwed over the housing.
REFERENCES:
patent: 3012456 (1961-12-01), Dracka
patent: 3876369 (1975-04-01), Behrens
patent: 3889490 (1975-06-01), Nadolny
patent: 3906819 (1975-09-01), Curtis
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