Agitating – Operator supported
Patent
1995-06-14
1996-10-22
Cooley, Charles E.
Agitating
Operator supported
366344, 403325, 403326, A47J 4307
Patent
active
055670474
ABSTRACT:
A handheld blender, such as, for example, an immersion blender, includes a motor assembly and a tool assembly releasably connectable to the motor assembly. The tool assembly includes a tool shaft and a tool shank rotatably receiving the tool shaft. The motor assembly has a drive shaft and an approximately U-shaped expansion clamp. The tool shaft is structured to be non-rotatably coupled to the drive shaft when the tool assembly is connected to the motor assembly. The tool shank has a mounting groove, wherein the tool assembly is connected to the motor assembly by the approximately U-shaped expansion clamp engaging the mounting groove of the tool shank. To release the tool shank, the expansion clamp is displaced by a push button in the direction of an opposite push button having expansion surfaces on which the legs of the expansion clamp ride up, thus disengaging the expansion clamp from the mounting groove. To urge the tool shank away from the motor assembly, the push buttons have beveled surfaces.
REFERENCES:
patent: 2639904 (1953-05-01), McMaster et al.
patent: 2865662 (1958-12-01), Nurmse
patent: 3299924 (1967-01-01), Hanschitz
patent: 4505058 (1985-03-01), Peterson
patent: 4850699 (1989-07-01), Rebordosa
patent: 5048996 (1991-09-01), DuBois et al.
patent: 5368384 (1994-11-01), Duncan et al.
Braun Aktiengesellschaft
Cooley Charles E.
LandOfFree
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