US 12,434,846 B2
Bartack stitched pneumatic deicer boots
Anvith BG Gopinath Gowda, Karnataka (IN); Shyam Kumar Dattatri, Karnataka (IN); and Rhushikesh Patil, Bangalore (IN)
Assigned to GOODRICH CORPORATION, Charlotte, NC (US)
Filed by Goodrich Corporation, Charlotte, NC (US)
Filed on May 25, 2023, as Appl. No. 18/323,630.
Claims priority of application No. 202311015570 (IN), filed on Mar. 9, 2023.
Prior Publication US 2024/0300653 A1, Sep. 12, 2024
Int. Cl. B64D 15/16 (2006.01); B64F 5/10 (2017.01)
CPC B64D 15/166 (2013.01) [B64F 5/10 (2017.01)] 16 Claims
OG exemplary drawing
 
1. A pneumatic deicer boot assembly comprising:
fabric layers consisting of:
a stretchable layer formed of a stretchable fabric; and
a non-stretchable layer formed of a non-stretchable fabric,
wherein the stretchable layer and the non-stretchable layer are stitched together by stitches consisting of bartack stitches,
wherein:
each one of the bartack stitches is defined by a zig-zag stitch A and a straight stitch line B within the zig-zig stitch; and
wherein the bartack stitches are stitched in a pattern consisting of a parallel line pattern, such that the bartack stitches define airflow spacings between adjacent ones of the bartack stitches;
wherein:
the stretchable layer is configured to expand from a deflated position to an inflated position via introduction of air to the airflow spacings to create expanded air tubes, wherein the expanded air tubes, end to end, have a same cross-sectional shape as each other and extend parallel with each other,
each one of the expanded air tubes is positioned between adjacent ones of the bartack stitches and between the stretchable layer and the non-stretchable layer.