Tube fitting assembly method
AssigneeUniversal Enterprises, Inc.
InventorsRalph G. Ridenour, Dennis W. Kerr
Life of this patent
Estimating the term…
Abstract
A malleable tube is assembled to a rigid fitting by placing the end of the tube over one end of the fitting which has a barb with a locking face facing away from the end of the fitting and a sloping face facing the end of the fitting, the tube is gripped with jaws which have an inward nose projection of a small axial extent and this nose projection grips the tube at about the end of the fitting, force is applied between the fitting and the jaws to relatively move the fitting and tube longitudinally into the jaws until the nose projection has relatively moved past the barb on the fitting.
Claims20
A method of assembling a malleable tube to a rigid fitting, the fitting having an external surface with at least one barb thereon, said at least one barb having a locking face facing away from a forward end of the fitting and a sloping face facing the forward end of the fitting, and the fitting having an abutment facing the forward end of the fitting and located rearward of the barb, and said method comprising the steps of:
- placing the tube over the forward end of the fitting and the at least one barb and engaging the abutment;
- gripping the tube with jaws which have an inward nose projection of a small axial extent at about the forward end of the fitting;
- longitudinally moving the fitting and the tube relative to the jaws until the nose projection has relatively moved past the at least one barb;
- and
- guiding the tube with a rear portion of said jaws during the step of relative longitudinal movement.
A method of assembling a malleable tube to a rigid fitting, the fitting having an external surface at a forward end of the fitting, an abutment facing the forward end of the fitting and located rearward of the external surface, and a cylindrical surface at a forward side of said abutment and radially recessed from said external surface, said method comprising the steps of:
- placing the tube over the forward end of the fitting and the external surface and engaging the abutment;
- gripping the tube with jaws which have an inward nose projection of a small axial extent at about the forward end of the fitting;
- longitudinally moving the fitting and the tube relative to the jaws until the nose projection is adjacent the abutment;
- longitudinally compressing the tube ahead of the nose projection during the step of relative longitudinal movement to deform the tube radially inward against the fitting;
- and
- forming a seal between the tube and one of said abutment and said cylindrical surface.
Dependencies are inferred from the claim text.