Hook for hanging plastic vent pipes
FIG. 1 is a side elevational view of a hook for hanging plastic vent pipes showing my new design, an opposite view being a mirror image thereof;
The respective top and bottom views of FIG. 1 are plain and unornamented;
FIG. 2 is a side elevational view of a hook for hanging plastic vent pipes showing a second embodiment of my new design, an opposite view being a mirror image thereof;
The respective top and bottom views of FIG. 2 are plain and unornamented; and,
FIG. 3 is a view similar to FIG. 1 with dotted lines to indicate the environment in which this hook is used, said dotted lines showing a building component to which the hook is attached and a vent pipe supported by a resilient cord which is secured to said hook, said dotted line showings being for illustrative purposes only and form no part of the claimed design.
| D27426 | July 1897 | Walters et al. |
| D28802 | June 1898 | Thomas |
| D32226 | February 1900 | Dotson |
| D32531 | April 1900 | Stimmel |
| D32640 | May 1900 | Coleman |
| 1769015 | July 1930 | Carpenter |
| 2104612 | January 1938 | Droll |
| 2423455 | August 1947 | Larson |
| 2641428 | June 1953 | Kirk et al. |
| 3032305 | May 1962 | Mittenzwei |
| 3216684 | November 1965 | Larson |
| 5005789 | April 9, 1991 | Jones |
- Hardware Age, Oct. 1984, p. 95, s-hook, located at bottom of page. Piedmont Equipment Co. Catalog, 1984, p. 153, s-hook, located near bottom of page. Photo of a hook for hanging pipes not known to be patented but known to be in public use. Mar. 19, 1995.
Type: Grant
Filed: May 8, 1995
Date of Patent: Jul 2, 1996
Inventor: Franklin H. Nielsen (Thornton, IA)
Primary Examiner: Holly R. Baynham
Attorney: Morton S. Adler
Application Number: 0/38,522
