Tool for loosening or tightening spark plug

Details Tool for loosening or tightening spark plug Tool for loosening or tightening spark plug

1992-02-12

1993-02-09

Meislin, D. S.

Tools

Wrench, screwdriver, or driver therefor

Rigid jaws

811245, 811246, B25B 1306

Patent

active

051845296

ABSTRACT:
A tool is provided for loosening or tightening a spark plug while interposing a gasket and a pressure sensor between the spark plug and a cylinder head. The tool consists of concentric, relatively rotatable inner and outer cylinders. The inner cylinder is engageable with the spark plug for rotation together therewith and for loosening or tightening the same. The outer cylinder is lockingly engageable with a cylinder head by means of an axial projection of the outer cylinder and a groove of the cylinder head. The outer cylinder is further lockingly engageable with the gasket by means of a locking leg of the outer cylinder and a peripheral cut of the gasket. The gasket is thus lockingly engageable with the cylinder head by way of the outer cylinder for preventing the pressure sensor from rotating relative to the cylinder head when the spark plug is loosened or tightened.

REFERENCES:
patent: 4714138 (1987-12-01), Zaccone
patent: 5009133 (1991-04-01), Carey
patent: 5074173 (1991-12-01), Cearley

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