JPS5487327A - Fuel tank cap for motorcycle - Google Patents

Fuel tank cap for motorcycle

Info

Publication number
JPS5487327A
JPS5487327A JP15534077A JP15534077A JPS5487327A JP S5487327 A JPS5487327 A JP S5487327A JP 15534077 A JP15534077 A JP 15534077A JP 15534077 A JP15534077 A JP 15534077A JP S5487327 A JPS5487327 A JP S5487327A
Authority
JP
Japan
Prior art keywords
relief valve
fuel tank
vent hole
valve body
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15534077A
Other languages
Japanese (ja)
Inventor
Kunihiko Nakajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Priority to JP15534077A priority Critical patent/JPS5487327A/en
Publication of JPS5487327A publication Critical patent/JPS5487327A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent fuel leakage near carburator, by installing relief valve to open when the pressure in the fuel tank is more than periscribed value comparing with atmospheric pressure, to the fuel tank cap.
CONSTITUTION: Relief valve body 5 has hollow body 5a fixed valve material 5b inside of it, energized downwards for the valve seat 6 by spring 10, vent hole 14 is formed at the center of relief valve material 5b, air vent-use valve material 16 having projection 15 correspond to vent hole 14 is arranged inside of relief valve body 5a. Fuel tank is deformed due to upset of vehicle body, when the inner prssure is raised abnormally due to reducing volume, relief valve body 5 is pushed up oppos ing 10 force, valve body 5b is off from ring projection 6a of valve seat 6. In result, the pressure in the tank is escaped out through the groove 12 from vent hole 13 and vent hole 11.
COPYRIGHT: (C)1979,JPO&Japio
JP15534077A 1977-12-23 1977-12-23 Fuel tank cap for motorcycle Pending JPS5487327A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15534077A JPS5487327A (en) 1977-12-23 1977-12-23 Fuel tank cap for motorcycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15534077A JPS5487327A (en) 1977-12-23 1977-12-23 Fuel tank cap for motorcycle

Publications (1)

Publication Number Publication Date
JPS5487327A true JPS5487327A (en) 1979-07-11

Family

ID=15603741

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15534077A Pending JPS5487327A (en) 1977-12-23 1977-12-23 Fuel tank cap for motorcycle

Country Status (1)

Country Link
JP (1) JPS5487327A (en)

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