Butterfly valve

- Eur-Control Kalle AB
Skip to: Description  ·  References Cited  · Patent History  ·  Patent History
Description

FIG. 1 is a front perspective view of a butterfly valve showing my new design;

FIG. 2 is a rear perspective view thereof;

FIG. 3 is a right side view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a cross sectional view taken on line 7--7 of FIG. 1; and

FIG. 8 is a cross sectional view taken on line 8--8 of FIG. 1.

Referenced Cited
U.S. Patent Documents
D253365 November 6, 1979 Nyberg
3091428 May 1963 Magos
3129920 April 1964 Stillwagon
3173650 March 1965 Cotterman et al.
3206164 September 1965 Yopp
3241808 March 1966 Allen
3254873 June 1966 Knox
3329359 July 1967 Allen
3338551 August 1967 Block
3958595 May 25, 1976 Rene
Patent History
Patent number: D264493
Type: Grant
Filed: May 19, 1980
Date of Patent: May 18, 1982
Assignee: Eur-Control Kalle AB
Inventor: Gustav B. Nyberg (Saffle)
Primary Examiner: James R. Largen
Law Firm: Ostrolenk, Faber, Gerb & Soffen
Application Number: 6/150,639
Classifications
Current U.S. Class: D23/19
International Classification: D2301;