Spark plug tool
OwnerC. Dewayne Cearleyinventor
Life of this patent
Estimating the term…
Abstract
A spark plug tool for installing a spark plug utilizes a flexible shaft. The flexible shaft secures to a tubular housing on one end. A handle locates on the other end of the flexible shaft. The tubular housing has internal polygonal sides formed in it for mating with polygonal sides of a spark plug. A resilient liner located in the housing grips the insulation sheath of the spark plug to retain the spark plug with the housing. The shaft can be detached from the housing after it has been used to initially tighten the spark plug. A square hole formed in the upper end of the housing will receive a conventional socket torque tool.
Claims6
A tool for installing a spark plug in a spark plug hole in an engine, the spark plug having a metal body with polygonal sides and a set of threads, a hard insulation sheath and a tip protruding from the sheath, the tool comprising in combination:
- a tubular housing having a lower end and an upper end;
- internal polygonal sides formed in the lower end of the housing for engaging the polygonal sides of the spark plug;
- an elastomeric liner located sin the housing above the internal polygonal sides, the liner having a smaller inner diameter than the outer diameter of the insulation sheath and a larger inner diameter than the tip for frictionally receiving the insulation sheath of the spark plug, to releasably retain the spark plug in the housing;
- a flexible shaft having an upper end and a lower end;
- a handle secured to the upper end of the shaft;
- securing means for securing the lower end of the shaft to the housing, enabling a user to grasp the handle, insert the spark plug into the housing, insert the spark plug in the spark plug hole and rotate the spark plug with the handle to screw the spark plug into the spark plug hole;
- and wherein the securing means comprises:
- a threaded member joined to the lower end of the shaft;
- and
- internal threads formed in the housing for receiving the threaded member, allowing the shaft to be detached from the housing by unscrewing the threaded member from the internal threads after the user has tightened the spark plug initially with the handle;
- and wherein the tool further comprises:
- a hole with polygonal sides formed in the upper end of the housing above the internal threads for receiving a torque member for rotating the housing to fully tighten the spark plug in the engine after the flexible shaft has been detached from the housing.
A tool for installing a spark plug in a spark plug hole in an engine, the spark plug having a metal body with polygonal sides and a set of threads, a hard insulation sheath and a tip protruding from the sheath, the tool comprising in combination:
- a tubular housing having a lower end and an upper end;
- internal polygonal sides formed in the lower end of the housing for engaging the polygonal sides of the spark plug;
- an elastomeric liner located in the housing above the internal polygonal sides, the liner having a smaller inner diameter than the outer diameter of the insulation sheath and a larger inner diameter than the tip for frictionally receiving the insulation sheath of the spark plug, to releasably retain the spark plug in the housing;
- a flexible shaft having an upper end and a lower end;
- a handle secured to the upper end of the shaft;
- securing means for securing the lower end of the shaft to the housing, enabling a user to grasp the handle, insert the spark plug into the housing, insert the spark plug in the spark plug hole and rotate the spark plug with the handle to screw the spark plug into the spark plug hole;
- wherein the securing means releasably secures the flexible shaft to the housing to enable the flexible shaft to be detached from the housing once the handle has initially tightened the spark plug;
- and wherein the tool further comprises:
- a hole with polygonal sides formed in the upper end of the housing above the internal threads for receiving a torque member after the flexible shaft has been detached from the housing for rotating the housing to fully tighten the spark plug in the engine.
A tool for installing a spark plug in a spark plug hole in an engine, the spark plug having a metal body with polygonal sides and a set of threads, a hard insulation sheath and a tip protruding from the sheath, the tool comprising in combination:
- a tubular housing for receiving the spark plug;
- internal polygonal sides formed in the housing for of the spark plug;
- retaining means for releasably retaining the spark plug within the housing with the polygonal sides of the housing in engagement with the polygonal sides of the spark plug;
- a flexible shaft;
- a handle secured the shaft;
- securing means for securing the lower end of the shaft to the housing, enabling a user to grasp the handle, insert the spark plug into the housing, insert the spark plug in the spark plug hole and rotate the spark plug with the handle to screw the spark plug into the spark plug hole, the securing means allowing the flexible shaft to be detached from the housing once the spark plug has been tightened by the flexible shaft;
- and
- a hole with polygonal sides formed in the upper end of the housing for receiving a torque member once the flexible shaft has been removed, for rotating the housing to further tighten the spark plug in the engine.
Dependencies are inferred from the claim text.