Catch for safety belts of air, water, and land transport means

US4555831A · kind A · utility

Inventors

• Uwe Otzen · Rottweil, DE
• Karl Wild · Schramberg, DE

Key dates

• Filing date: Apr 27, 1983
• Grant date: Dec 3, 1985
• Expiry date: Apr 27, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T24/45466
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

An improved catch for safety belts embodying releasable locking of the catch tongue with a releasing element which by means of a pushbutton is manually movable to slide counter to a return spring and release a locking mechanism, and an automatic release system controlled by an electric signal generated by a sensor and having an electro-mechanical drive. The automatic release operation occurring after a given delay period, which starts anew after each signal, if several signals occur successively within the delay period. The electro-mechanical drive comprising a gear motor driven threaded spindle, and a drag nut on the spindle bearing against the releasing element. The drag nut releasing said releasing element for movement by the pushbutton. A switching element is provided which, upon release of the locking mechanism, acts on the gear motor to restore it to its starting condition prior to the electrical signal generated by the sensor.