Filter regulator unit

- Festo AG & Co.
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Description

FIG. 1 is a front perspective view of a filter regulator unit showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof opposite to that shown in FIG. 2;

FIG. 4 is a side elevational view thereof, the opposite side being a mirror image thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
D295674 May 10, 1988 Ogasawara et al.
D331961 December 22, 1992 Ridolfi et al.
3980457 September 14, 1976 Smith
4234014 November 18, 1980 Knight
5067856 November 26, 1991 Sisk
Other references
  • Pneumatic Filters, Regulators, Lubricators and Pre-Assembled Air Service Modules, Festo Corporation Catalog, pp. 1, 3-5, 18, 21-25, 27 and 29-30; 1990. Pneumatic Filters, Regulators, Lubricators Economical, High-Flow "D-Series", Festo Corportion Catalog, pp. 1-3 and 5-20; 1996.
Patent History
Patent number: D402023
Type: Grant
Filed: Oct 2, 1997
Date of Patent: Dec 1, 1998
Assignee: Festo AG & Co. (Esslingen)
Inventors: Axel Thallemer (Esslingen), Jan Kleffmann (Esslingen)
Primary Examiner: Lisa Lichtenstein
Law Firm: Hoffmann & Baron, LLP
Application Number: 0/77,482
Classifications
Current U.S. Class: Filter (D23/365); Air Treatment (D23/355)
International Classification: 2304;