US 12,213,921 B2
Inflatable mattress with longitudinally oriented stringers
David T. Davis, Bethlehem, PA (US)
Assigned to D.T. Davis Enterprises, Ltd., Allentown, PA (US)
Filed by D.T. Davis Enterprises, Ltd., Allentown, PA (US)
Filed on Nov. 22, 2023, as Appl. No. 18/517,618.
Application 18/517,618 is a continuation of application No. 17/685,911, filed on Mar. 3, 2022, granted, now 11,826,285.
Application 17/685,911 is a continuation of application No. 16/756,197, granted, now 11,266,551, issued on Mar. 8, 2022, previously published as PCT/US2018/056446, filed on Oct. 18, 2018.
Claims priority of provisional application 62/663,618, filed on Apr. 27, 2018.
Claims priority of provisional application 62/574,870, filed on Oct. 20, 2017.
Prior Publication US 2024/0082077 A1, Mar. 14, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. A61G 1/013 (2006.01); A47C 27/08 (2006.01); A61G 1/048 (2006.01); A61G 7/10 (2006.01)
CPC A61G 1/013 (2013.01) [A47C 27/081 (2013.01); A47C 27/087 (2013.01); A61G 1/048 (2013.01); A61G 7/1028 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A transfer mattress, comprising:
a top panel having a perimeter including a proximal edge and a distal edge, wherein a central longitudinal axis extends from the proximal edge to the distal edge;
a bottom panel having a plurality of perforations and a perimeter including a proximal edge and a distal edge, the perimeter of the bottom panel coupled to the perimeter of the top panel to define a mattress body;
an outer stringer having a superior edge coupled to the top panel and an inferior edge coupled to the bottom panel such that a portion of the outer stringer extending between the top panel and the bottom panel is at an angle other than 90 degrees with respect to the top panel and the bottom panel when the mattress body is inflated; and
an inner stringer positioned between the central longitudinal axis and the outer stringer and having a superior edge coupled to the top panel and an inferior edge coupled to the bottom panel such that a portion of the inner stringer extending between the top panel and the bottom panel is at an angle other than 90 degrees with respect to the top panel and the bottom panel when the mattress body is inflated.