Vent stop for window sashes

- CertainTeed Corporation
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Description

FIG. 1 is a front perspective view of a vent stop for window sashes showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a front elevational view thereof; and,

FIG. 7 is a back elevational view thereof.

Referenced Cited
U.S. Patent Documents
D371502 July 9, 1996 Morris
4475311 October 9, 1984 Gibson
4553353 November 19, 1985 Simpson
4640048 February 3, 1987 Winner et al.
4791756 December 20, 1988 Simpson
4901475 February 20, 1990 Simpson
Other references
  • Ashland Products Trade Literature entitled "Single & Double Hung Slider Casement", Ashland Products, Chicago, Illinois, Pub'd Prior to Filing Date of Application.
Patent History
Patent number: D380138
Type: Grant
Filed: Jun 23, 1995
Date of Patent: Jun 24, 1997
Assignee: CertainTeed Corporation (Valley Forge, PA)
Inventors: Dennis Carlson (McPherson, KS), Jeffrey B. Hersh (Wayne, PA), Dennis Westphal (Parma, MI)
Primary Examiner: Brian N. Vinson
Law Firm: Duane, Morris & Heckscher
Application Number: 0/40,684
Classifications
Current U.S. Class: D/8343; D8/331
International Classification: 0809;