Door lock

US7210711B2 · kind B2 · utility

Assignee

• emz-Hanauer GmbH & Co. KGaA · DE

Inventors

• Albert Dirnberger · Neunburg vorm Wald, DE
• Georg Spiessl · Willhof, DE

Key dates

• Filing date: Nov 6, 2001
• Grant date: May 1, 2007
• Expiry date: Nov 6, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T292/1055
• WIPO field: Other consumer goods
• WIPO sector: Other fields

Abstract

The solution according to the invention is based upon the knowledge that the undesirable hysteresis of the force-path function in door locks (1) can be avoided or at least minimised if the (frictional) forces acting during transitions from open positions to closed positions and vice versa are minimised and/or avoided. In this respect, the invention is based upon the starting point of at least reducing (frictional) forces acting in bearings for rotatable components (14, 18, 28) of door locks (1) and/or between surfaces (22, 30) displaceable relative to one another. In this manner, it is attained that forces required for a transition from a closed position to an open position essentially correspond to forces required for a transition from the open position to the closed position.