Screw drain plug

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Description

FIG. 1 is a front perspective view of our new design illustrating the characteristic features of the design, which resides in its shape together with having an axially blind, left-handed threaded opening.

FIG. 2 is a side elevational view of the design illustrated in FIG. 1, all sides being identical.

FIG. 3 is a front elevational view of the screw plug design shown in FIG. 1; and,

FIG. 4 is a rear elevational view of the screw plug design shown in FIG. 1.

Claims

The ornamental design for a screw drain plug, as shown and described.

Referenced Cited
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Patent History
Patent number: D545404
Type: Grant
Filed: Apr 20, 2005
Date of Patent: Jun 26, 2007
Inventors: Scott Nightlinger (Mount Prospect, IL), Agnieszka Nightlinger (Mount Prospect, IL), Piotr Loniewski (Warszawa), Grzegorz Loniewski (Mount Prospect, IL)
Primary Examiner: Louis S. Zarfas
Assistant Examiner: Eric L. Goodman
Application Number: 29/228,122
Classifications
Current U.S. Class: Cap, Plug, Vent Or Screen (11) (D23/260)