Family

Loading Family data...

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

Patent Owner(s)

Patent Owner	Address
SUMITOMO (S H I ) CONSTRUCTION MACHINERY CO LTD	SHINAGAWA-KU TOKYO 141-6025

International Classification(s)

• F16D:COUPLINGS FOR TRANSMITTING ROTATION
• F16G:BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DR....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Scherrer, Edward P	North Liberty, IA	1	4
# of filed Patents : 1 Total Citations : 4

Cited Art Landscape

Load Citation

• No Cited Art to Display

Loading Cited Art Landscape...

Patent Citation Ranking

• 4 Citation Count
• F16D Class

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

Forward Cite Landscape

Load Citation

• No Forward Cites to Display

Loading Forward Cite Landscape...

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: 4436444

Mechanism for connecting and disconnecting crane sections

---

Abstract

---

An improved mechanism for connecting and disconnecting crane sections having a split locking ring positionable when contracted within a groove in one crane section and expandable into a groove in one crane section and expandable into a groove in the other crane section, with a double-acting ram connected at the free ends of the locking ring to control contraction and expansion thereof. A single acting ram is connected to provide a radial force at the heel of the locking ring when the latter is expanded.

---

 

---

Description

---

Claims

---

Claims data not available

---

Legal Events

 

• STCH2018
• FP1996
• LAPS1996
• FEPP1995
• FEPP1991
• MAFP1991
• FEPP1991
• AS1988
• FEPP1987
• MAFP1987
• I1984
• AS1983
• F1982
• PD1982

Date	Code	Event	Description
Jan 22, 2018	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Mar 13, 1996	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Mar 13, 1996
Mar 10, 1996	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Oct 17, 1995	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Nov 29, 1991	FEPP	FEE PAYMENT PROCEDURE	free format text: SURCHARGE FOR LATE PAYMENT, PL 96-517 (ORIGINAL EVENT CODE: M176); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Nov 29, 1991	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 8TH YEAR, PL 96-517 (ORIGINAL EVENT CODE: M171); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 8
Oct 15, 1991	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Apr 25, 1988	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE;ASSIGNOR:FMC CORPORATION, (A DE. CORP.);REEL/FRAME:004864/0391 Owner name: SUMITOMO (S.H.I.) CONSTRUCTION MACHINERY CO., LTD. Effective Date: Apr 25, 1988 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FMC CORPORATION, (A DE. CORP.);REEL/FRAME:004864/0391 Owner name: SUMITOMO (S.H.I.) CONSTRUCTION MACHINERY CO., LTD. Effective Date: Apr 25, 1988
Oct 13, 1987	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Mar 13, 1987	MAFP	MAINTENANCE FEE PAYMENT	free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, PL 96-517 (ORIGINAL EVENT CODE: M170); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY year of fee payment: 4
Mar 13, 1984	I	Issuance
Jan 22, 1983	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:SCHERRER, EDWARD P.;REEL/FRAME:004204/0945 Owner name: FMC CORPORATION, SAN JOSE, CA ACORP OF DE Effective Date: Jan 22, 1983
Jan 25, 1982	F	Filing
Jan 25, 1982	PD	Priority Date