Roller belleville spring damper

Patent · Tue Jul 07 00:00:00 EDT 1981

OSTI ID:5996299

Hebel, J B

A double acting damper for use in rotary drilling includes a splined tubular telescopic joint and employs plural paralleled stacks of double acting series stacked roller belleville spring washers in an annular pocket between the inner and outer tubular members of the joint. The springs, spline and telescopic bearings are in an oil filled volume sealed from the outside by a pressure seal at the lower end of the damper and a floating seal at the upper end. Electric and magnetic means are provided to check on the condition and quantity of the lubricant.

• Assignee: Smith International Inc
• Patent Number(s): US 4276947
• OSTI ID: 5996299
• Resource Relation: Patent File Date: Filed date 14 May 1979
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
ROTARY DRILLING
EQUIPMENT
ROTARY DRILLS
DAMPING
MECHANICAL VIBRATIONS
DESIGN
EQUIPMENT PROTECTION DEVICES
OIL WELLS
DRILLING
DRILLING EQUIPMENT
DRILLS
WELLS
020300* - Petroleum- Drilling & Production