ROTARY HYDRAULIC DOOR CLOSERS

Brand Owner Address Description
ROTA-CLOSER HARROW PRODUCTS, INC. 2627 EAST BELTLINE, S.E. GRAND RAPIDS MI 49546 ROTARY HYDRAULIC DOOR CLOSERS;
 

Where the owner name is not linked, that owner no longer owns the brand

    
Technical Examples
  1. A hydraulic door opening mechanism for overhead bi-fold doors is herein disclosed. The door opening mechanism mounts a hydraulic pump, pressure reservoir, valve manifold, and a hydraulic motor or cylinder on a first door panel. The door opening mechanism is pre-assembled with the doorframe prior to mounting the door in the door opening.