Hand-held power tool with locking nut

Details Hand-held power tool with locking nut Hand-held power tool with locking nut

2011-06-14

2011-06-14

Rose, Robert (Department: 3727)

Abrading

Frame or mount

Portable abrader

C451S508000

Reexamination Certificate

active

07959497

ABSTRACT:
A hand-held power tool includes a drive spindle (2) rotatable about a rotational axis (A), a clamping flange (3) provided at a free end of the drive spindle (2) and having at least one inner thread (12) that in a mounted condition of the clamping flange (3) on the drive spindle (2), engages in a thread undercut (13) of the clamping flange (2), a locking pin likewise provided at the free end of the drive spindle (2) and having a locking thread (4), and a locking nut (7) tightenable on the locking thread (4) for securing a disc-shaped tool (5) between the clamping flange (3) and the clamping surface (6) of the locking nut (7), with the clamping flange (3) having in its axial region between the disc-shaped tool (5) and an inner recess (8) of the locking nut (7) in which the centering collar (9) of the clamping flange (3) can be partially received at least one radial, outwardly projecting nose (10), and 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) of the clamping flange.

REFERENCES:
patent: 2331861 (1943-10-01), Smith
patent: 2747343 (1956-05-01), Gellert
patent: 6116996 (2000-09-01), Yanase
patent: 2003/0096566 (2003-05-01), Fritz et al.

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