Camshaft damper

Patent · Tue Jul 18 04:00:00 EDT 1989

OSTI ID:5378829

Ferguson, R J

This patent describes a drive sprocket for an internal combustion engine camshaft. It comprises, in combination, a circular body having a hub region, an outer periphery and an axis of rotation, means defined in the hub region for attaching the body to the end of the camshaft in torsion-transmitting relationship, radial extending drive surfaces defined on the body periphery for meshing with a flexible tension-transmitting member, a cylindrical surface homogeneously defined on the body concentric to the axis, an annular ring of synthetic elastomeric material mounted upon the cylindrical surface, and an annular inertia ring mounted upon the elastomeric material. The inertial ring including an inner cylindrical surface, the elastomeric material being bonded to the compressed between the cylindrical surfaces of the sprocket body and the inertia ring, the sprocket body cylindrical surface, elastomeric material and the inertia ring comprising torsional damping means direction mounted upon the body and integral with the body for damping torsional vibrations about the body axis. The sprocket including a web radially extending between the hub region and the outer periphery. The inertia ring, body cylindrical surface and elastomeric material being located adjacent to and in axial alignment with the web, and an oil passage defined in the sprocket hub region extending from the hub region to adjacent the body outer periphery along the web for lubricating the tension transmitting member.

• Assignee: Simpson Industries, Inc., Litchfield, MI
• Patent Number(s): US 4848183
• Application Number: PPN: US 7-015795A
• OSTI ID: 5378829
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330100* -- Internal Combustion Engines
DESIGN
ENGINES
GEARS
HEAT ENGINES
INTERNAL COMBUSTION ENGINES
MACHINE PARTS
OPERATION
SHAFTS