Patent
   D929799
Priority
May 04 2018
Filed
Nov 01 2018
Issued
Sep 07 2021
Expiry
Sep 07 2036
Assg.orig
Entity
unknown
6
38
n/a
The ornamental design for a screw shaft element, as shown and described.

FIG. 1 is a perspective view of a screw shaft element showing a first embodiment of our new design;

FIG. 2 is a front view of the design of the first embodiment;

FIG. 3 is a back view of the design of the first embodiment;

FIG. 4 is a left view of the design of the first embodiment;

FIG. 5 is a right view of the design of the first embodiment;

FIG. 6 is a top view of the design of the first embodiment;

FIG. 7 is a bottom view of the design of the first embodiment;

FIG. 8 is a perspective view of a screw shaft element showing a second embodiment of our new design;

FIG. 9 is a front view of the design of the second embodiment;

FIG. 10 is a back view of the design of the second embodiment;

FIG. 11 is a left view of the design of the second embodiment;

FIG. 12 is a right view of the design of the second embodiment;

FIG. 13 is a top view of the design of the second embodiment; and,

FIG. 14 is a bottom view of the design of the second embodiment.

The broken lines in the drawings illustrate portions of the screw shaft element and form no part of the claimed design.

Walter, Wolfgang, Schötzau, Martin

Patent Priority Assignee Title
11779891, Oct 17 2017 Buss AG Asymmetrical three-blade screw-type shaft for a mixing and kneading machine
D957180, May 04 2018 Buss AG Screw shaft element
D961990, May 04 2018 Buss AG Screw shaft element
D966032, May 04 2018 Buss AG Screw shaft element
D966033, May 04 2018 Buss AG Screw shaft element
D982970, Apr 12 2021 GRIPWIQ ApS Suction cup
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Nov 01 2018Buss AG(assignment on the face of the patent)
Nov 16 2018WALTER, WOLFGANGBuss AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0476200963 pdf
Nov 16 2018SCHÖTZAU, MARTINBuss AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0476200963 pdf
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