Patent
   D961990
Priority
May 04 2018
Filed
Nov 01 2018
Issued
Aug 30 2022
Expiry
Aug 30 2037
Assg.orig
Entity
unknown
2
15
n/a
The ornamental design for a screw shaft element, as shown and described.

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

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is an enlarged left side view thereof;

FIG. 5 is an enlarged right side view thereof;

FIG. 6 is an enlarged top view thereof;

FIG. 7 is an enlarged bottom view thereof

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

FIG. 9 is a front view thereof.

FIG. 10 is a back view thereof.

FIG. 11 is a left side view thereof

FIG. 12 is a right side view thereof

FIG. 13 is an enlarged top view thereof; and,

FIG. 14 is an enlarged bottom view thereof.

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
D971433, May 31 2020 The Original Sustainable Joint LLC Combined administering apparatus with dispensing device
Patent Priority Assignee Title
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5158434, Jul 26 1990 GS DEVELOPMENT CORPORATION DE CORP ; GENERAL SIGNAL DEVELOPMENT CORPORATION DE CORP ; GENERAL SIGNAL DEVELOPMENT CORPORATION, A CORP OF DELAWARE Mixing impellers and impeller systems for mixing and blending liquids and liquid suspensions having a wide range of viscosities
9587662, Oct 10 2014 Threaded fastener hole repair apparatus
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D910834, Dec 05 2018 Asia Vital Components Co., Ltd. Impeller for a fan
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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 0476210454 pdf
Nov 16 2018SCHÖTZAU, MARTINBuss AGASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0476210454 pdf
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