Patent · US Expired

Screw and nut assembly

US5855460A · kind A · utility

9Cited by

4References

10Claims

0Family size

Assignee

WABCO GmbH · DE

Inventors

Dieter Brehmer · Hannover, DE
Horst Breidel · Ronnenberg, DE
Friedrich Gross · Seelze, DE
Peter Homann · Neustadt, DE
Wilfried Matthias · Bad Nenndorf, DE
Herbert Unger · Springe, DE

Key dates

Filing date	Jun 10, 1997
Grant date	Jan 5, 1999
Priority date	—
Expiry date	Jun 10, 2017

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB60T17/086
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A screw and nut assembly comprises a screw having a hollow cavity extending longitudinally throughout, a nut configured to screw onto the screw, and an extension attached to the nut. The extension traverses the hollow cavity of the screw when the nut is placed on an end of the screw without being screwed on. The extension is displaced from the hollow cavity of the screw as the nut is screwed onto the screw. The status of the screw and nut connection may thus be determined from the screw side of the assembly, without observing the nut, by observing the extent to which the extension has emerged from the hollow cavity in the screw.

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