Patent · US Expired

Pipe driving attachment

US4460050A · kind A · utility

5Cited by

5References

4Claims

0Family size

Inventor

Paul Wayne Schmidt · Lennestadt, DE

Key dates

Filing date	Mar 24, 1982
Grant date	Jul 17, 1984
Priority date	—
Expiry date	Mar 24, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T403/7052
WIPO fieldCivil engineering
WIPO sectorOther fields

Abstract

An attachment for driving pipe wherein a plurality of concentric sleeves having diminishing diameters are arranged in driving engagement with a pipe end with a driving hammer operating to impart a driving force to the pipe, the sleeves being arranged to form a generally concial configuration such that the sleeves are in contact with each other at points which lie along lines of contact intersecting at the axis of the driving hammer to form an acute included angle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.