Helical drive

- Unirac Inc.
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Description

FIG. 1 is a top perspective view of a first embodiment of a helical drive according to the design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a middle side elevational view thereof;

FIG. 6 is a right side elevational view thereof; and

FIG. 7 is a bottom perspective view thereof.

FIG. 8 is a top perspective view of a second embodiment of the helical drive according to the design;

FIG. 9 is a top plan view thereof;

FIG. 10 is a bottom plan view thereof;

FIG. 11 is a left side elevational view thereof;

FIG. 12 is a middle side elevational view thereof;

FIG. 13 is a right side elevational view thereof; and,

FIG. 14 is a bottom perspective view thereof.

Claims

The ornamental design for a helical drive, as shown and described.

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Patent History
Patent number: D841454
Type: Grant
Filed: Oct 6, 2017
Date of Patent: Feb 26, 2019
Assignee: Unirac Inc. (Albuquerque, NM)
Inventors: Nathan Schuit (Edgewood, NM), Jason Mayfield (Albuquerque, NM)
Primary Examiner: Cynthia R Underwood
Application Number: 29/621,360
Classifications
Current U.S. Class: D8/397