Geometrical instruments
Patent
1977-10-31
1979-03-20
Lake, Roy
Geometrical instruments
123169PH, 339 26, H01R 1334
Patent
active
041451066
ABSTRACT:
A shielding device for spark plugs which are oriented in an engine block by a key and keyway means such that the electrodes of the spark plug are located in a predetermined orientation in a combustion chamber in the engine. The spark plug is secured in place by a shielding enclosure to prevent radio frequency interference and also to provide an explosion-proof chamber around the spark plug. The shield of the spark plug is provided with an externally threaded section which is threadedly secured to a mating threaded section on the vehicle engine block. The shield is provided with an inner conical surface abutting against a shoulder on the body of the spark plug in order to axially force the plug into the engine block with shoulder to shoulder contact. The shield body is also provided with a plurality of wrenching flats enabling the shield body to be threadedly secured into the block and to press the plug into tight-fitting engagement with the engine block and thereby permit the spark plug electrodes to be located in the desired predetermined orientation in the engine block.
REFERENCES:
patent: 2280855 (1942-04-01), Rose
patent: 2336570 (1943-12-01), Rabezzana
patent: 2762021 (1956-09-01), Battey et al.
patent: 2878299 (1959-03-01), Starr
patent: 3025425 (1962-03-01), Logan
Ashen Robert M.
Desmond E. F.
Lake Roy
Livingston Industries Incorporated
Schaap Robert J.
LandOfFree
Shielding device for oriented spark plugs does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shielding device for oriented spark plugs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shielding device for oriented spark plugs will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-217768