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US 2016/0228667 A1Published application
Overmolded swivel with angular interlock
AssigneeKoninklijke Philips N.V.
InventorRICHARD THOMAS HAIBACH
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AssigneeKoninklijke Philips N.V.
InventorRICHARD THOMAS HAIBACH
Estimating the term…
An angular interlock for a swivel feature formed using injection molding techniques is described herein. In one exemplary embodiment, the swivel feature is used for a conduit for delivering breathing therapy to a patient, and includes an outer swivel component and an inner swivel component formed using a two-shot molding technique. The outer swivel component is formed first out of a material, such as polycarbonate, having a low shrink rate, whereas the inner swivel component is formed of a material, such as polypropylene, having a high shrink rate. The material for the inner swivel component is injected into the formed outer swivel component and allowed to cool, creating a clearance. The outer swivel component includes an angular interlock protrusion that allows the inner swivel component to be formed without creating an interface about the angular interlock protrusion, which typically occurs with standard rectangular interlocks.
A swivel feature for a conduit between a pressure generating device delivering breathing therapy to a patient and a patient interface device donned by the patient, the swivel feature comprising:
The swivel feature of claim 6, wherein the material having the first shrink rate is a first plastic, wherein the material having the second shrink rate is a second plastic, wherein the first plastic has a melt temperature that is greater than the second plastic, and wherein the second plastic has a shrink rate that is greater than 0.010 inches per inch.
A method for making a swivel feature for a breathing gas delivery system, the method comprising:
Dependencies are inferred from the claim text.