Lid construction for breathing apparatus
First Claim
Patent Images
1. A breathing assistance apparatus comprising:
- a lid and a main body, the lid and the main body selectively enclosing a cavity configured to hold a body of liquid; and
at least one hinge assembly connecting the lid to a rear portion of the main body, the at least one hinge assembly comprising;
at least one post mounted to the lid;
at least one support mounted to the main body, wherein the at least one support comprises a recess comprising a mouth that opens in a rearward direction, the recess configured to receive at least a portion of the at least one post;
a clip extending along at least an axial length of the at least one post, the clip being positioned on an opposite side of the at least one post from the at least one support such that the at least one post is captured between the clip and the at least one support;
a cam structure having a sloping surface such that the cam structure tapers toward a tip and a thickness of the cam structure decreases from a base of the cam structure toward the tip; and
a guide structure having an opposing surface configured to engage the sloping surface of the cam structure such that the sloping surface and the opposing surface resist movement of the lid relative to the main body in a lid detachment direction when the lid is in an at least partially closed position,the at least one hinge assembly adapted to provide restraint against air pressure within the apparatus in use,wherein, when the lid is in an open position, the lid can be separated from the main body with application of a sufficient force without breakage of either the at least one support or the at least one post.
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Accused Products
Abstract
A breathing assistance apparatus has a lid and latch assembly configured for one-handed operation. The apparatus also includes a hinge assembly that separates when over-rotated but that reengages upon closing of the lid onto the main body of the apparatus.
30 Citations
19 Claims
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1. A breathing assistance apparatus comprising:
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a lid and a main body, the lid and the main body selectively enclosing a cavity configured to hold a body of liquid; and at least one hinge assembly connecting the lid to a rear portion of the main body, the at least one hinge assembly comprising; at least one post mounted to the lid; at least one support mounted to the main body, wherein the at least one support comprises a recess comprising a mouth that opens in a rearward direction, the recess configured to receive at least a portion of the at least one post; a clip extending along at least an axial length of the at least one post, the clip being positioned on an opposite side of the at least one post from the at least one support such that the at least one post is captured between the clip and the at least one support; a cam structure having a sloping surface such that the cam structure tapers toward a tip and a thickness of the cam structure decreases from a base of the cam structure toward the tip; and a guide structure having an opposing surface configured to engage the sloping surface of the cam structure such that the sloping surface and the opposing surface resist movement of the lid relative to the main body in a lid detachment direction when the lid is in an at least partially closed position, the at least one hinge assembly adapted to provide restraint against air pressure within the apparatus in use, wherein, when the lid is in an open position, the lid can be separated from the main body with application of a sufficient force without breakage of either the at least one support or the at least one post. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A breathing assistance apparatus comprising:
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a lid and a main body, the lid and the main body selectively enclosing a cavity; and at least one hinge assembly connecting the lid to a rear portion of the main body, the at least one hinge assembly comprising at least one post mounted to the lid and at least one support mounted to the main body, wherein the at least one support comprises a recess configured to receive at least a portion of the at least one post, the at least one hinge assembly comprising a clip extending along at least an axial length of the at least one post, the clip being positioned on an opposite side of the at least one post from the at least one support such that the at least one post is captured between the clip and the at least one support, wherein the main body comprises a cam structure having a sloping surface such that the cam structure tapers toward a tip and the lid comprises a guide structure having a recess configured to receive the cam structure and an opposing surface configured to engage the sloping surface such that the sloping surface of the cam structure and the opposing surface of the guide structure engage each other and resist detachment of the lid from the main body when the lid is in an at least partially closed position, and wherein when the lid is in an open position, the guide structure is sufficiently spaced from the cam structure such that the lid can be separated from the main body in a rearward direction with application of a sufficient force without breakage of either the at least one support or the at least one post and without removal of the at least one post from the lid. - View Dependent Claims (16, 17, 18, 19)
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Specification