Patent · US Active

Hand-held power tool with locking nut

US8021214B2 · kind B2 · utility

0Cited by

1References

5Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Joachim Guenther · Ingolstadt, DE
Klaus Nagelschmicd · Germering, DE
Friedemann Moeller · Munich, DE
Roland Mcuer · Ettringen, DE
Thomas Blatz · Kaufering, DE

Key dates

Filing date	Dec 10, 2008
Grant date	Sep 20, 2011
Priority date	—
Expiry date	Nov 26, 2029

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB24B45/00
WIPO fieldMachine tools
WIPO sectorMechanical engineering

Abstract

A hand-held power tool has a drive spindle (2) rotatable about a rotational axis (A) and provided at its free end with a clamping flange (3) and a locking thread (4), a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between the clamping flange (3) of the drive spindle (2) and its clamping surface (6), and a safety spring (9) located between the disc-shaped tool (5) and an inner recess (8) formed in the clamping surface (6) of the locking nut (7), radially preloaded against the locking thread, and having at least one radial, outwardly projecting nose (10), with the disc-shaped tool (5) having at least one, opening radially inwardly and axially extending groove (11) associated with the at least one nose (10).

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