US 12,252,099 B1
Variable airfoil profile hollow wiper arms
Travis H. Marshall, West Hartford, CT (US); Alexander N. Reid, St. Louis Park, MN (US); Greg A. Seidel, Lakeville, MN (US); Nitin Chandola, Fort Walton Beach, FL (US); Saugata Sarkar, Farmington, CT (US); and Ranadip Acharya, Glastonbury, CT (US)
Assigned to Rosemount Aerospace Inc., Burnsville, MN (US)
Filed by Rosemount Aerospace Inc., Burnsville, MN (US)
Filed on Apr. 21, 2023, as Appl. No. 18/137,617.
Int. Cl. B60S 1/34 (2006.01); B60S 1/04 (2006.01)
CPC B60S 1/3431 (2013.01) [B60S 1/3425 (2013.01); B60S 1/3427 (2013.01); B60S 1/3434 (2013.01); B60S 1/3436 (2013.01); B60S 1/3438 (2013.01); B60S 1/0408 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A wiper apparatus comprising:
a wiper axis interface configured for mounting a wiper assembly to a wiper drive; and
a lower wiper arm extending from the wiper axis interface to a wiper mount that is configured to connect the lower arm to an upper arm, wherein a first end of the lower wiper arm proximate the wiper axis interface has a first airfoil profile, wherein a second end of the lower wiper arm proximate the wiper mount has a second airfoil profile, and wherein an intermediate portion of the lower wiper arm extending between the first and second ends has a transitioning airfoil profile that transitions from the first airfoil profile to the second airfoil profile, wherein an outer wall of the lower wiper arm is defined about a hollow core of the lower wiper arm, wherein at the first end of the lower wiper arm, the outer wall has a first wall thickness, wherein at the second end of the lower wiper arm, the outer wall has a second wall thickness different from the first wall thickness, and wherein along the intermediate portion, the outer wall has a transitioning wall thickness that transitions from the first wall thickness to the second wall thickness, wherein the hollow core terminates at a first bore opening into a connector bore of the wiper axis interface, wherein the hollow core terminates at a second bore opening into a clevis of the wiper mount.