Patent · US Expired

Controllable thread extractor device with an air passage connected to a vacuum source

US4258872A · kind A · utility

0Cited by

6References

9Claims

0Family size

Assignee

Schubert & Salzer · DE

Inventors

Gerd Husges · Ingolstadt, DE
Walter Mayer · Ingolstadt, DE

Key dates

Filing date	Dec 11, 1978
Grant date	Mar 31, 1981
Priority date	—
Expiry date	Dec 11, 1998

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16K31/086
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

The present invention relates to a controllable thread extractor with an air passage connected to a vacuum source which includes a shaft passageway perpendicular to the air passage dividing the air passage into two sections, a ball is received in the shaft and means for actuating the ball to selectively open and close the air passage.

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