Integral inlet port assembly

1. A unitary inlet port assembly for use as a closable air inlet port for an inflatable heating blanket or garment, including:

a) a port panel associated with an outside layer of the inflatable heating blanket or garment, the port panel including a first side edge, an inside surface, and an annular rim defining an inlet opening through the port panel that is configured for receiving an air hose nozzle; and

b) a closure panel that is configured to pivot between an open position and a closed position relative to the port panel, and disposed within an interior portion of the inflatable heating blanket or garment, the closure panel including an outer-facing surface, and a side edge that forms a panel hinge with the first side edge of the port panel, and

c) a latch extending from and positioned on the outer-facing surface of the closure panel to register with the inlet opening of the port panel when the closure panel is pivoted to the closed position at which the outer-facing surface of the closure panel confronts and engages the inside surface of the port panel, and where the latch is configured to engage the annular rim of the port panel to hold the closure panel in the closed position.

2. The unitary inlet port assembly according to claim 1 , wherein the annular rim is circular to form a circular inlet opening.

3. The unitary inlet port assembly according to claim 2 , wherein the latch is attached hingedly to the outer-facing surface of the closure panel.

4. The unitary inlet port assembly according to claim 3 , wherein the latch comprises a circular or oval tab, including a neck portion that forms a hinge with the outer-facing surface of the closure panel, and two opposed lateral portions of the latch that extend laterally beyond the neck.

5. The unitary inlet port assembly according to claim 4 , wherein a periphery of the two opposed lateral portions of the latch span a distance that is the same distance or less than the diameter or maximum dimension of the inlet opening.

6. The unitary inlet port assembly according to claim 5 , wherein the hinge of the latch extends along a latch hinge line that is parallel with the panel hinge.

7. The unitary inlet port assembly according to claim 6 , wherein the latch hinge line, when the closure panel is folded into the closed position, defines a chord line of the inlet opening that is off-set from the lateral centerline of the inlet opening.

8. The unitary inlet port assembly according to claim 5 , wherein the hinge of the latch extends along a latch hinge line that is perpendicular to the panel hinge.

9. The unitary inlet port assembly according to claim 8 , wherein the latch hinge line, when the closure panel is folded into the closed position, defines a chord line of the inlet opening that is off-set from the longitudinal centerline of the inlet opening.

10. The unitary inlet port assembly according to claim 1 , wherein the latch comprises a circular or oval tab, including a neck portion that forms a hinge with the outer-facing surface of the closure panel, and two opposed lateral portions of the latch that extend laterally beyond the neck.

11. The unitary inlet port assembly according to claim 10 wherein a periphery of the two opposed lateral portions of the latch span a distance that is the same distance or less than the diameter or maximum dimension of the inlet opening.

12. The unitary inlet port assembly according to claim 10 , wherein the hinge of the latch extends along a latch hinge line that is parallel with the panel hinge.

13. The unitary inlet port assembly according to claim 12 , wherein the latch hinge line, when the closure panel is folded into the closed position, defines a chord line of the inlet opening that is off-set from the lateral centerline of the inlet opening.

14. The unitary inlet port assembly according to claim 10 , wherein the hinge of the latch extends along a latch hinge line that is perpendicular to the panel hinge.

15. The unitary inlet port assembly according to claim 14 , wherein the latch hinge line, when the closure panel is folded into the closed position, defines a chord line of the inlet opening that is off-set from the longitudinal centerline of the inlet opening.

16. The unitary inlet port assembly according to claim 1 , wherein unitary inlet port assembly is formed by folding a cardboard blank material.

17. The unitary inlet port assembly according to claim 1 , further including a temporary covering attached releasably over the port opening, the temporary covering comprising a tissue paper that prevents dust or other debris from entering into the port opening during storage.

18. The unitary inlet port assembly according to claim 1 , wherein the port panel is a panel portion of a tubular member that is disposed within a tubular section of the interior portion of the inflatable heating blanket or garment.

19. The unitary inlet port assembly according to claim 18 , wherein the tubular member further includes at least two additional panels, including a first panel that includes a side edge that forms a second panel hinge with said side edge of the port panel, a second panel that includes a side edge that forms a third panel hinge with an opposed side edge of the port panel.

20. The unitary inlet port assembly according to claim 19 , further including a third panel that includes a first side edge that forms a fourth panel hinge with an opposed side edge of the first panel, and a second side edge that forms a fifth panel hinge with an opposed side edge of the second panel, wherein the tubular member forms a rectangular cylinder.

21. The unitary inlet port assembly according to claim 19 , further including an adhesive sealing film that secures and seals the inlet port assembly to an outer air-impervious film material of the inflatable heating blanket or garment.