System for latching a leveling door

US4655488A · kind A · utility

Assignee

• Dr. C. Otto & Comp. GmbH

Inventors

• Manfred Friedrichs · Essen, DE
• Michael BÖHM · Stockdorf, DE

Key dates

• Filing date: Sep 26, 1985
• Grant date: Apr 7, 1987
• Expiry date: Sep 26, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T292/223
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A latch assembly is disclosed for latching a leveling door used to close a leveling rod opening which is surrounded by a seal in a leveling box at the upper portion of a coke-oven door. The latching assembly includes spaced apart side flanges connected together at one of their ends by a cross web. The opposite ends of the flanges carry a rod which, in one embodiment, engage claws on arms extending from the leveling box and in a second embodiment the is pivotally connected with arms extending from the leveling box. In the first embodiment, an arm extends from a leveling door and forms a pivotal connection with retaining members that are in turn, secured to a spring plate. In the second embodiment, the arm extending from the leveling door has a claw which can releasably engage the pin supported by the retaining member in all embodiments between the spring palate and the cross web there is a compression spring and a pin which extends through the spring plate where the extended end portion is provided with a nut forming a stop member.