Sailboard rig and boom

US4498411A · kind A · utility

Assignee

• Hannes Marker · DE

Inventor

• Frank P. Marker · Garmisch-Partenkirchen, DE

Key dates

• Filing date: Apr 28, 1982
• Grant date: Feb 12, 1985
• Expiry date: Apr 28, 2002

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B63H8/50
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

In a sailboard rig, the boom is provided at its mast end with an extension using a torsion spring, which in an operative position extends in the plane of the boom and which is provided at its fore end with an eye for attaching a starting sheet.