Device for preventing sewer backflow

Skip to: Description  ·  Claims  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a perspective front, top and right side view of a device for preventing sewer backflow;

FIG. 2 is a perspective front, bottom and right side view of the device for preventing sewer backflow of FIG. 1;

FIG. 3 is a top plan view of the device for preventing sewer backflow of FIG. 1;

FIG. 4 is a bottom plan view of the device for preventing sewer backflow of FIG. 1;

FIG. 5 is a right side elevational view of the device for preventing sewer backflow of FIG. 1;

FIG. 6 is a front elevational view of the device for preventing sewer backflow of FIG. 1;

FIG. 7 is a left side elevational view of the device for preventing sewer backflow of FIG. 1; and,

FIG. 8 is a rear elevational view of the device for preventing sewer backflow of FIG. 1.

The broken lines shown in the drawings are for the purpose of illustrating portions of the device for preventing sewer backflow and form no part of the claimed design.

Claims

I claim the ornamental design for a device for preventing sewer backflow, as shown and described.

Referenced Cited
U.S. Patent Documents
783493 February 1905 Wood
1034965 August 1912 Bradley
1753724 April 1930 Shaw
2003770 June 1935 Goodhart
2476434 July 1949 Spang
2843146 July 1958 Kirschner
2871875 February 1959 Dale
3007484 November 1961 Hallinan
3107687 October 1963 Howe
3322430 May 1967 Voitik
3610275 October 1971 Determan et al.
3768505 October 1973 Benke
3809411 May 1974 Emberson
3903918 September 1975 Carnarius
4088149 May 9, 1978 Logsdon
4160293 July 10, 1979 Niemann
4239240 December 16, 1980 Wilkinson
D363532 October 24, 1995 Van Gorp
6273124 August 14, 2001 Huber
7410146 August 12, 2008 Huang
9010363 April 21, 2015 Huber
9790678 October 17, 2017 Character
9945110 April 17, 2018 Chen
10082213 September 25, 2018 Character
Patent History
Patent number: D856477
Type: Grant
Filed: Aug 12, 2016
Date of Patent: Aug 13, 2019
Inventor: Robert Campbell (Brampton)
Primary Examiner: Cynthia Ramirez
Assistant Examiner: Gino Colan
Application Number: 29/574,121
Classifications
Current U.S. Class: Valve Or Body Therefor (D23/233)