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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT LORENZSTRASSE 10 7000 STUTTGART-40 GERMANY	Not Provided

International Classification(s)

• F01D:NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g....

• 1988 Application Filing Year
• F01D Class
• 139 Applications Filed
• 3 Patents Issued To-Date
• 2.16 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Eichhorn, Werner	Landshut, DE	1	9
# of filed Patents : 1 Total Citations : 9
Hopfensperger, Reinhold	Dietelskirchen, DE	11	134
# of filed Patents : 11 Total Citations : 134

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Patent Citation Ranking

• 9 Citation Count
• F01D Class

• 0 % this patent is cited more than
• 34 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent No: 5007801

Impeller made from a sheet-metal disk and method of manufacturing same

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Abstract

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An impeller formed from sheet-metal by stamping and bending, at a low production cost, capable of delivering an increased quantity of air at a reduced noise level and with reduced power consumption and enhanced efficiency. The method of manufacturing the impeller from sheet metal incorporates sufficient versitility to allow the blades of the impeller to be formed to any desired configuration in order to provide an optimum shape for the intended impeller use. The blades can be curved or twisted and can extend perpendicular from the sheet-metal surface or at any desired angle for optimum utilization.

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Description

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Claims

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Legal Events

 

• STCH2018
• FP1995
• LAPS1995
• REMI1994
• I1991
• F1988
• AS1988
• PD1987

Date	Code	Event	Description
Jan 29, 2018	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Apr 19, 1995	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Apr 19, 1995
Apr 16, 1995	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Nov 22, 1994	REMI	MAINTENANCE FEE REMINDER MAILED
Apr 16, 1991	I	Issuance
Aug 09, 1988	F	Filing
Jul 21, 1988	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HOPFENSPERGER, REINHOLD;EICHHORN, WERNER;REEL/FRAME:004937/0118 Owner name: STANDARD ELEKTRIK LORENZ AKTIENGESELLSCHAFT, LOREN Effective Date: Jul 21, 1988
Aug 10, 1987	PD	Priority Date