Chassis of a transportable device

US10813808B2 · kind B2 · utility

Assignee

• HAWE Altenstadt Holding GmbH · DE

Inventors

• Klaus Fiedler · Cologne, DE
• Thomas Stockmeier · Baden, CH

Key dates

• Filing date: Feb 6, 2018
• Grant date: Oct 27, 2020
• Expiry date: Feb 6, 2038

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16D63/008
• WIPO field: Transport
• WIPO sector: Mechanical engineering

Abstract

A chassis of a transportable device including a base structure, four casters arranged thereon, four lowerable and raiseable support feet also mounted on the base structure, and a hydraulic support foot actuating device. The hydraulic support foot actuating device has a reservoir (1), a pump (2) manually operable by hand or foot, four support foot linear actuators (3) and a purely hydro-mechanical pipe and valve arrangement (4) which connects the reservoir (1), the pump (2) and the linear actuators (3) to one another. Therein, by means of hydraulic fluid delivered by the pump (2) from the reservoir (1) the two support feet assigned to two primary linear actuators (3a) can be fully extended until a mechanical stop is reached while raising the base structure by first applying pressure to the two primary linear actuators (3a) before applying pressure to the two other, secondary linear actuators (3b).