Family

Loading Family data...

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

Patent Owner(s)

Patent Owner	Address
FRANCE BED CO LTD	TOKYO JAPAN TOKYO METROPOLIS

International Classification(s)

• F16F:SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRAT....

• 1985 Application Filing Year
• F16F Class
• 230 Applications Filed
• 0 Patents Issued To-Date
• 0 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Sasaki, Noboru	Tokyo, JP	51	522
# of filed Patents : 51 Total Citations : 522

Cited Art Landscape

Load Citation

• No Cited Art to Display

Loading Cited Art Landscape...

Patent Citation Ranking

• 15 Citation Count
• F16F Class

• 0 % this patent is cited more than
• 38 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: 4664361

Spring unit

---

Abstract

---

A plurality of main springs and a plurality of intermediate support springs are arranged on a rectangular base plate. Each main spring is made of a single steel wire and consists of two coil portions and a straight rod portion connecting these two coil portions. The rod portions of the main springs are arranged at right angles, thus forming a lattice. One end of each coil portion is fastened to a frame. The other end of each coil portion is fastened to the base plate. Each coil portion is shaped like a cone, an inverted cone, a hourglass or a barrel.

---

 

---

Description

---

Claims

---

Claims data not available

---

Legal Events

 

• FPAY1998
• FPAY1994
• FPAY1990
• FEPP1989
• CC1988
• I1987
• STCF1987
• F1985
• PD1983

Date	Code	Event	Description
Nov 12, 1998	FPAY	FEE PAYMENT	year of fee payment: 12
Oct 12, 1994	FPAY	FEE PAYMENT	year of fee payment: 8
Oct 23, 1990	FPAY	FEE PAYMENT	year of fee payment: 4
Nov 01, 1989	FEPP	FEE PAYMENT PROCEDURE	free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY
Apr 05, 1988	CC	CERTIFICATE OF CORRECTION
May 12, 1987	I	Issuance
Mar 12, 1987	STCF	INFORMATION ON STATUS: PATENT GRANT	free format text: PATENTED CASE
May 07, 1985	F	Filing
Jul 25, 1983	PD	Priority Date