Cam shaft with expanded hollow shaft

Patent · Tue Sep 15 04:00:00 EDT 1987

OSTI ID:5958266

Hughes, R W; Brisson, R H; Brisson, G R

This patent describes a camshaft having lobes with irregularly shaped apertures spaced along the longitudinal axis of a hollow tubular shaft. The lobes are orientated radially and axially in predetermined positions along the hollow tubular shaft. The camshaft is characterized by the walls of the hollow shaft expanded outwardly into aperture portions in irregular engagement with the interior of the apertures of the lobes and the walls expanded outwardly radially farther into ballooned portions between adjacent lobes to create corresponding outside and inside shoulders extending between the aperture and ballooned portions. The outside shoulders are disposed immediately adjacent and abutting each side of the lobes circumferentially about the apertures therein to secure the lobes axially upon the shaft, the inside shoulders disposed directly opposite the outside shoulders to that shoulder extend annularly about each end of each of the apertures and the ballooned portions extend between shoulders at adjacent lobes, the exterior circumferences of the lobes being furnished to closer tolerances than the interior apertures and the exterior surfaces of the lobes being positioned radially relative to the longitudinal axis with the radial positions of the interior apertures being offset among adjacent lobes.

• Assignee: NOV; NOV-87-082005; EDB-87-178608
• Patent Number(s): US 4693138
• OSTI ID: 5958266
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330602* -- Vehicle Design Factors-- Engine-Transmission Matching
APERTURES
DESIGN
MACHINE PARTS
MECHANICAL TRANSMISSIONS
OPENINGS
ORIENTATION
SHAFTS