JPS63193404U - - Google Patents

Info

Publication number

JPS63193404U

JPS63193404U JP8536387U JP8536387U JPS63193404U JP S63193404 U JPS63193404 U JP S63193404U JP 8536387 U JP8536387 U JP 8536387U JP 8536387 U JP8536387 U JP 8536387U JP S63193404 U JPS63193404 U JP S63193404U

Authority

JP

Japan

Prior art keywords

engagement

receiving portion

pair

tractor

engagement receiving

Prior art date

1987-05-29

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

Links

• Espacenet
• Global Dossier
• Discuss

• 230000008878 coupling Effects 0.000 claims description 3
• 238000010168 coupling process Methods 0.000 claims description 3
• 238000005859 coupling reaction Methods 0.000 claims description 3
• 230000002265 prevention Effects 0.000 claims 1
• 230000000903 blocking effect Effects 0.000 description 1