Patent ID: 9127791
Filing Date: 2015-09-08
Classification: D03D,F16L

Abstract:
1. An extendable hose having a first end and a second end and configured to extend along its longitudinal axis when an extending force exceeds a retracting force and to retract when the retracting force exceeds the extending force, the extendable hose comprising: a) a tube-shaped outer cover with an extended length and a retracted length, wherein the outer cover can extend along the longitudinal axis of the extendable hose to the extended length and retract along the longitudinal axis of the extendable hose to the retracted length; b) an inner elastic hose capable of stretching along the longitudinal axis of the extendable hose to at least two times its natural length and having a tendency to return to its natural length when stretched, wherein: c) an input connector attached to the first end of the extendable hose and designed to be removably attached to a source of pressurized fluid; d) an output connector attached to the second end of the extendable hose and designed to removably connect to a flow restricting device for generating the extending force by increasing a pressure differential between fluid within the inner elastic hose and an ambient environment at lower pressure than the fluid within the inner elastic hose; and e) a lubricant disposed for reducing chafing between the inner elastic hose and the tube-shaped outer cover; wherein the lubricant is a solid lubricant; and wherein the lubricant is paraffin wax.