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

Patent Owner(s)

Patent Owner	Address
PIAGGIO & C S P A	56025 PONTEDERA (PISA)

International Classification(s)

• F16H:GEARING

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Gaddi, Bruno	Pisa, IT	8	87
# of filed Patents : 8 Total Citations : 87

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Patent Citation Ranking

• 10 Citation Count
• F16H Class

• 0 % this patent is cited more than
• 39 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: 4589858

Variable ratio transmission system, particularly useful for vehicles

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Abstract

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This invention relates to a variable ratio transmission system suitable for vehicles in which the speed regulator is mounted on the transmission driven shaft, and the relationship governing its response to the speed variation of the driven shaft is such as to induce a transmission ratio variation to predetermine the speed of the system input shaft, which is intended for connection to the drive shaft. Means are also provided for connection to engine regulator means, in order to determine the constant speed of the system input shaft as a function of the torque applied to the transmission input shaft.

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Description

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Claims

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Claims data not available

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Legal Events

 

• FP1990
• LAPS1990
• STCH1990
• REMI1990
• I1986
• F1984
• AS1984
• PD1983

Date	Code	Event	Description
May 20, 1990	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: May 20, 1990
May 20, 1990	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
May 20, 1990	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Feb 15, 1990	REMI	MAINTENANCE FEE REMINDER MAILED
May 20, 1986	I	Issuance
Mar 06, 1984	F	Filing
Feb 06, 1984	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:GADDI, BRUNO;REEL/FRAME:004310/0491 Owner name: PIAGGIO & C. S.P.A. GENOVA, ITALY Effective Date: Feb 06, 1984
Sep 09, 1983	PD	Priority Date