Filter unit for intake air of helicopter turbine engines

Description

FIG. 1 is a perspective view from top, front and left side showing my new design for a filter unit for intake air of helicopter turbine engines;

FIG. 2 is a side elevational view from the left side thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a side elevational view from the right side thereof;

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

FIG. 6 is a top plan view thereof.

The back view thereof is devoid of ornamentation and forms no part of my inventive design.

Claims

The ornamental design for a filter unit for intake air of helicopter turbine engines, as shown and described.

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Inventors:	Rose; Lindsay D. (Moorabbin, Victoria, AU)
Appl. No.:	07/877,022
Filed:	May 1, 1992

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Foreign Application Priority Data

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Dec 6, 1991 [AU]			3751/91

Current U.S. Class:	D23/365
Field of Search:	;55/306 ;422/123,124 ;239/57,58,55 ;454/231 ;312/236,213 ;D23/365

Foreign Patent Documents

	151698		Nov 1981		DE
	715112		Feb 1980		SU

Primary Examiner: Lucas; Susan J.
Assistant Examiner: Lichtenstein; Lisa
Attorney, Agent or Firm: Kinney & Lange