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US Patent: 4,267,627
Attachment for Valve Spring Depressing Tool
Patentee:
Ray Douglas - Thompson Falls, MT

USPTO Classifications:
29/217, 29/219

Tool Categories:
specialty tools : valve spring tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Dec. 17, 1979
Granted: May 19, 1981

Patent Pictures:
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Description:
Wells, St. John & Roberts - patent attorneys

Abstract

An attachment that enables use of a common valve spring tool for selectively depressing valve return springs found within deep axial recesses within an engine cylinder head. The attachment includes a yoke that is pivoted to a bracket which, in turn, can be selectively mounted to the spring tool. Pins on the yoke define a first pivot axis. An elongated spring depressing member is pivoted to the yoke on a second axis perpendicular to the first axis. The depressing member includes an elongated leg that extends from the yoke to a ring at a bottom end thereof. The ring is circular and centered on the second axis with the leg being spaced to one side thereof. The ring engages a valve spring and forces it down to expose the valve stem and spring keepers thereon. The leg, being spaced to one side of the second axis, allows free access to the exposed parts of the valve assembly.

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