Elbow for a pneumatic conveying system

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

FIG. 1 is a perspective view for an elbow for a pneumatic conveying system showing my new design;

FIG. 2 is a side elevational view thereof; the opposite side being the mirror image thereof; and,

FIG. 3 is a end elevational view thereof; the opposite end being the mirror image thereof.

Referenced Cited
U.S. Patent Documents
43130 June 1864 Perry
D132939 June 1942 Corley
D135634 May 1943 Stark et al.
1960557 May 1934 Snyder
1972294 September 1934 Fantz
2066775 January 1937 Fritsch
4265472 May 5, 1981 Ipsen
Other references
  • Pocket Guide to Flanges, Fittings and Piping Data; p. 43; 90-degree elbows, 1992.
Patent History
Patent number: D426932
Type: Grant
Filed: Apr 15, 1997
Date of Patent: Jun 20, 2000
Inventor: Kenneth J Gregory (Galston HSW 2159)
Primary Examiner: Alan P. Douglas
Assistant Examiner: Robin V. Taylor
Application Number: 0/69,425
Classifications
Current U.S. Class: Element Or Attachment (D34/35); Elbow Or With Flow Direction Change (D23/263)
International Classification: 1205;