Security sash lock

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Description

FIG. 1 is a top plan view of the security sash lock of the present invention, with the front and back components thereof assembled;

FIG. 2 is a top plan view of the security sash lock of the present invention, with the front and back components thereof disassembled;

FIG. 3 is a front elevation of the security sash lock of the present invention, as shown in FIG. 1; and,

FIG. 4 is a left side elevation of the security sash lock of the present invention.

The right side elevation of the security sash lock of the present invention is similar to the left side elevation, except for the lever at the top.

The distinguishing features of my new design for a security sash lock are its extremely narrow depth from front to back, and its extreme simplicity as a whole.

Claims

The ornamental design for the security sash lock, as shown and described.

Referenced Cited
U.S. Patent Documents
D268643 April 19, 1983 Anderson
4736972 April 12, 1988 Mosch
D302651 August 8, 1989 Mosch
D418737 January 11, 2000 Libby et al.
D442058 May 15, 2001 Miller et al.
Patent History
Patent number: D489596
Type: Grant
Filed: Jan 3, 2002
Date of Patent: May 11, 2004
Inventor: Michael Costello (East Boston, MA)
Primary Examiner: Brian N. Vinson
Attorney, Agent or Law Firm: Altman & Martin
Application Number: 29/153,233
Classifications
Current U.S. Class: D8/338
International Classification: 0807;