Vibrator with incorporated electric motor
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 31, 1995
Grant Date -
N/A
app pub date -
Mar 14, 1994
filing date -
May 11, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vibrator for compacting construction materials has a housing having a housing mantle with a first end face and a cylindrical interior. The housing has an upper part for closing the housing at the first end face. The upper part is axially inserted into the housing mantle and secured in a closing position thereof against axial displacement. A radially inwardly extending support surface is connected within the housing mantle. An electric motor is drivingly connected to an unbalanced shaft. The electric motor has an inner rotor end an outer cylindrical stator pack end is inserted into the housing mantle from the first end face. The stator pack has a recess and is inserted into the housing mantle with sliding fit and secured against rotation. A spreading element made of spring steel for securing the stator pack is inserted into the housing mantle through the first end face and positioned on the stator pack before closing the housing to be clamped between the support surface and the upper housing part. It has an axially extending projection for engaging the recess of the stator pack and a plurality of spreading pawls resting on the support surface. The spreading pawls are evenly spaced about the inner circumference of the housing mantle and are forced against the housing mantle when axially clamping the spreading element.
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