Patent ID: 8887343
Filing Date: 2014-11-18
Classification: B08B,F16H,Y10T

Abstract:
1. A system for axially propelling a hose, comprising: a system housing; a tractor element disposed in the system housing and including: a second protrusion roller rotatably fastened to the tractor housing circumferentially adjacent the first protrusion roller at a non-perpendicular angle with respect to a first direction along the axial through bore and at a different angle than the fastened angle of the first protrusion roller with respect to the first direction along the axial through bore and extending through the tractor housing into the through-bore, wherein adjacent first and second protrusion rollers extend through a common opening in the tractor housing, and wherein: the hose assembly can be disposed in the through-bore so that the second protrusion roller contacts a second flank portion of the coil different from the first flank portion of the coil; as the tractor housing is rotated by the actuator in a second rotational direction, opposite the first rotational direction: an actuator within the system housing mounted adjacent the tractor housing for rotating the tractor housing with respect to the system housing, wherein: