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US 5,220,727 AGranted
Method making cam shafts
OwnerPeter A. Hochsteininventor
Life of this patent
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Abstract
A method for making cam shafts wherein a plurality of cam lobes (12) are positioned along a hollow tubular shaft (18) and are subsequently secured thereto by expanding the shaft (18) outward, into engagement with the cam lobes (12). The shaft (18) is expanded by deflagrating a propellant (64) to generate a sudden increase of gas pressure which is introducing within the shaft (18).
Claims15
A method for making a cam shaft from a plurality of cam lobes having apertures disposed therethrough and a hollow tubular shaft extending between opposite ends and along a longitudinal axis, the method comprising the steps of:
- inserting the hollow tubular shaft through the apertures of a plurality of lobes;
- positioning the lobes along the hollow tubular shaft;
- providing an propellant;
- and characterized by,
- deflagrating the propellant to generate a sudden increase of gas pressure and introducing the increased gas pressure into the hollow tubular shaft to expand the shaft into engagement with the lobes thereby securing the lobes to the shaft and preventing movement therebetween.
2 more elements
Dependencies are inferred from the claim text.