Spring damper with controlled wear area

Details Spring damper with controlled wear area Spring damper with controlled wear area

Category

F - Mech Eng,Light,Heat,Weapons

Subcategory

01

Subsubcategory

L

CPC

171/80

IPC codes

F01L 3/00 (2006.01) F01L 1/46 (2006.01) F16F 13/02 (2006.01)

Type

Patent

Patent number

CA 1219221

Description

SPRING DAMPER WITH CONTROLLED WEAR AREA Abstract of the Disclosure An internal type, spring damper for use in an internal combustion engine or the like having a cylinder head with a poppet valve supported for movement between valve open and valve closed positions and with a coiled valve return spring loosely encircling the stem of the valve and operatively associated at one end with the valve and having its bottom end operatively in abutment with the cylinder head whereby to normally bias the poppet valve to the closed position, has at least its corresponding bottom end of reduced external diameter for a predetermined axial extent whereby to eliminate damper-to-spring contact for up to at least 1 1/2 coils of the valve spring at its bottom end.

Application Number

472858

Affiliated with

Also associated with

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