US 11,938,906 B2
Cleaning apparatus having a piston
Dirk Ringler, Friedewald-Motzfeld (DE); Stefan Schäckel, Bad Hersfeld (DE); Reiner Krauße, Herleshausen-Willershausen (DE); and Ilja Prygunkov, Mainz (DE)
Assigned to Continental Automotive GmbH, Hannover (DE)
Appl. No. 17/298,466
Filed by Continental Automotive GmbH, Hannover (DE)
PCT Filed Nov. 29, 2019, PCT No. PCT/EP2019/083158
§ 371(c)(1), (2) Date May 28, 2021,
PCT Pub. No. WO2020/109593, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 10 2018 220 582.5 (DE), filed on Nov. 29, 2018.
Prior Publication US 2022/0024420 A1, Jan. 27, 2022
Int. Cl. B60S 1/52 (2006.01); B05B 9/047 (2006.01); B08B 3/02 (2006.01)
CPC B60S 1/52 (2013.01) [B05B 9/047 (2013.01); B08B 3/02 (2013.01); B08B 2203/027 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A cleaning apparatus for a motor vehicle comprising:
a housing,
a reciprocating piston movable in a pressure-controlled manner in the housing and movable from a retracted initial position into a deployed cleaning position along an actuation axis, the reciprocating piston having an inner channel for transporting a cleaning fluid through the reciprocating piston to a spray nozzle, and
at least one guide configured to prevent rotation of the reciprocating piston about the actuation axis during an entire stroke of the reciprocating piston, the at least one guide arranged at least regionally in the inner channel.