Mechanism for producing a rotary movement in a valve of an internal combustion engine

Claim 2

A mechanism for producing a rotary movement at a valve of an internal combustion engine which has concentrically arranged valve springs, which includes a non-rotatable and a rotatable part, a cup spring arranged between these two parts, and balls running on inclined surface means of one of said two parts, characterized in that the inclined surface means are provided between the non-rotatable and rotatable parts at the rotatable part, in that the cup spring is supported at the rotatable part by way of a large number of further balls, and in that the rotatable part consists of two stamped-out members, of which one stamped-out member supporting the outer valve spring, is provided radially inward thereof with the inclined surface means for the balls between the non-rotatable part and the rotatable part and radially outward thereof with running surface means for the further balls, and the other stamped-out member of the rotatable part supporting the inner valve spring, is supported at the first-mentioned stamped-out part intermediate the inclined surface means and the running surface means.

Claim 3

A mechanism according to claim 1, characterized in that the non-rotatable part as also the rotatable part each consists of several stampings.

Claim 4

A mechanism according to claim 2, characterized in that the non-rotatable part also consists of two stamped-out members, one of said last-mentioned stamped-out members being disposed as ring above the cylinder head and the other stamped-out member being arranged cylindrically about a valve guide means.

Claim 5

A mechanism according to claim 1, characterized in that the non-rotatable part also consists of two stamped-out members, one of said last-mentioned stamped-out members being disposed as ring above the cylinder head and the other stamped-out member being arranged cylindrically about a valve guide means.

Claim 6

An arrangement for producing rotation of a valve on an internal combustion engine comprising: a non-rotatable part, a rotatable part movable with a valve stem of a valve, cup spring means interposed between said rotatable and non-rotatable parts, inclined surface means on one of said rotatable and non-rotatable parts, a first set of balls positioned between said rotatable and non-rotatable parts in engagement with said inclined surface means, a second set of balls positioned between said cup spring means and one of said rotatable and non-rotatable parts, running surface means on one of said rotatable and non-rotatable parts for guidingly engaging said second set of balls, and first and second valve return springs arranged concentrically around said stem, both of said return springs being supported at one of said rotatable and non-rotatable parts, said first return spring being supported at said one part at a position radially outwardly of said inclined surface means and said second return spring being supported at said one part at a position radially inwardly of the first return spring and the running surface means.

Claim 7

An arrangement for producing rotation of a valve on an internal combustion engine comprising: a non-rotatable part, a rotatable part movable with a valve stem of a valve, cup spring means interposed between said rotatable and non-rotatable parts, inclined surface means on one of said rotatable and non-rotatable parts, a first set of balls positioned between said rotatable and non-rotatable parts in engagement with said inclined surface means, a second set of balls positioned between said cup spring means and one of said rotatable and non-rotatable parts, running surface means on one of said rotatable and non-rotatable parts for guidingly engaging said second set of balls, and first and second valve return springs arranged concentrically around said stem, both of said return springs being supported at one of said rotatable and non-rotatable parts, said first return spring being supported at said one part at a position radially outwardly of said inclined surface means and said second return spring being supported at said one part at a position radially inwardly of the first return spring and the running surface means.

Claim 8

An arrangement according to claim 5, wherein both said running surface means and said inclined surface means are on said one part.

Claim 9

An arrangement aCcording to claim 6, wherein said one part is said rotatable part.

Claim 10

An arrangement according to claim 7, wherein said rotatable part consists of two stamped-out members, one of said members supporting said first return spring and including said running and inclined surface means, the other of said members supporting the second return spring.

Claim 11

An arrangement according to claim 8, characterized in that the non-rotatable part also consists of two stamped-out members, one of said last-mentioned stamped-out members being disposed as ring above the cylinder head and the other stamped-out member being arranged cylindrically about a valve guide means.