WORKING TOOL ATTACHMENT DEVICE Russian patent published in 1997 - IPC

FIELD: mechanical engineering. SUBSTANCE: working tool attachment device has body, guiding cylinder positioned within body and provided with through recesses where locking rollers with cylindrical portions are inserted. Two bores and two slots are diametrically positioned in inner surface of spring-biased sleeves for interacting with locking rollers and annular bore is made in outer surface of spring-biased sleeve, with inner diameter of annular bore being less than diametrical distance between two bores. Annular flexible member is mounted in annular bore of sleeve and has diameter corresponding to inner diameter of annular bore and height at least equal to length of cylindrical portion of locking roller and height of annular bore. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 3 dwg