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

Patent Owner(s)

Patent Owner	Address
HONEYWELL INC	HONEYWELL PLAZA A CORP OF DE MINNEAPOLIS MN 55408

International Classification(s)

• B64C:AEROPLANES; HELICOPTERS

• 1986 Application Filing Year
• B64C Class
• 159 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Miller, Harry	Scottsdale, AZ	54	1090
# of filed Patents : 54 Total Citations : 1090

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Patent Citation Ranking

• 40 Citation Count
• B64C Class

• 0 % this patent is cited more than
• 37 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: 4764872

Vertical flight path and airspeed control system for aircraft

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Abstract

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An aircraft control system that simultaneously controls vertical speed (or flight path angle) and airspeed or Mach number by supplying the vertical speed (or flight path angle) command to the autothrottle system and the airspeed or Mach command to the autopilot pitch channel. A thrust reference computer provides an approximation of the thrust required to maintain the reference vertical speed (or flight path angle) and a vertical speed error signal in closed loop fashion provides a vernier adjustment to the approximation to provide the autothrottle channel command.

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Description

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Claims

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Legal Events

 

• FPAY2000
• FEPP1999
• FPAY1995
• FPAY1991
• FEPP1991
• I1988
• STCF1988
• AS1988
• AS1986
• F1986
• PD1986
• AS1986

Date	Code	Event	Description
Feb 15, 2000	FPAY	FEE PAYMENT	year of fee payment: 12
Dec 02, 1999	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY free format text: PAYER NUMBER DE-ASSIGNED (ORIGINAL EVENT CODE: RMPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Dec 21, 1995	FPAY	FEE PAYMENT	year of fee payment: 8
Dec 16, 1991	FPAY	FEE PAYMENT	year of fee payment: 4
Dec 04, 1991	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Aug 16, 1988	I	Issuance
Jun 16, 1988	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
May 06, 1988	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE DEC 30, 1986;ASSIGNOR:UNISYS CORPORATION;REEL/FRAME:004869/0796 Owner name: HONEYWELL INC. Effective Date: May 06, 1988 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:UNISYS CORPORATION;REEL/FRAME:004869/0796 Owner name: HONEYWELL INC.,MINNESOTA Effective Date: May 06, 1988
Nov 12, 1986	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:SPERRY CORPORATION;SPERRY RAND CORPORATION;SPERRY HOLDING COMPANY, INC.;REEL/FRAME:004838/0329 Owner name: SP-COMMERCIAL FLIGHT, INC., ONE BURROUGHS PLACE, D Effective Date: Nov 12, 1986 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SPERRY CORPORATION;SPERRY RAND CORPORATION;SPERRY HOLDING COMPANY, INC.;REEL/FRAME:004838/0329 Owner name: SP-COMMERCIAL FLIGHT, INC., A DE CORP.,MICHIGAN Effective Date: Nov 12, 1986
Jul 16, 1986	F	Filing
Jul 16, 1986	PD	Priority Date
Jul 10, 1986	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MILLER, HARRY;REEL/FRAME:004587/0805 Owner name: SPERRY CORPORATION, GREAT NECK, NEW YORK, 11020, A Effective Date: Jul 10, 1986