Spring mounted seat with height adjustment

US4125242A · kind A · utility

Assignee

• Messrs. Willibald Grammer · DE

Inventors

• Hermann Meiller · Wernberg-Köblitz, DE
• Heinz Daunderer · Amberg, DE

Key dates

• Filing date: Feb 9, 1977
• Grant date: Nov 14, 1978
• Expiry date: Feb 9, 1997

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B60N2/544
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

There is proposed a seat of adjustable height having a seat part coupled by a connecting element to a supporting lever acted upon by supporting spring means, the lever being swingable against the action of the supporting spring means by a load acting on the seat part. In order to enable easy height adjustment with a simple construction in such a seat the connecting element is adjustable relative to the supporting lever to change the height of the seat part and a locking device is provided by means of which the connecting element and the supporting lever can be locked in several different relative positions. To enable height adjustment without use of a special lever the locking device may be constructed to lock the connecting element and the supporting lever in a series of relative positions as the seat part is raised and when the seat part reaches an upper end position to set itself in a disengaged condition which is maintained until the seat part is lowered to a lower end position. A very useful supporting spring means may be obtained if the supporting lever has at its free end a run-up cam which acts upon a sliding element displaceable against the action of the supporting spring …