US 12,030,066 B2
Paint discharging nozzle
Satoshi Kudoh, Miyagi (JP); Shohei Ozawa, Miyagi (JP); Keiko Maruyama, Miyagi (JP); and Shusei Murai, Tokyo (JP)
Assigned to RICOH COMPANY, LTD., Tokyo (JP)
Filed by Satoshi Kudoh, Miyagi (JP); Shohei Ozawa, Miyagi (JP); Keiko Maruyama, Miyagi (JP); and Shusei Murai, Tokyo (JP)
Filed on Oct. 12, 2021, as Appl. No. 17/498,848.
Claims priority of application No. 2020-173141 (JP), filed on Oct. 14, 2020.
Prior Publication US 2022/0111406 A1, Apr. 14, 2022
Int. Cl. B05B 1/30 (2006.01); F16C 17/04 (2006.01)
CPC B05B 1/3046 (2013.01) [F16C 17/04 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A paint discharging nozzle designed for discharging paint supplied at a predetermined pressure, the paint discharging nozzle comprising:
a housing having a nozzle hole through which paint is discharged;
a paint chamber to supply paint to the nozzle hole;
a needle valve retractably or advancingly fitted into the housing to close or open the nozzle hole;
a driver disposed in the housing to cause the needle valve to perform a retracting or advancing operation with respect to the nozzle hole; and
a bearing disposed to surround the needle valve within the housing to be in sliding contact with a peripheral surface of the needle valve as the retracting or advancing operation of the needle valve is performed, wherein
the bearing includes a linear guide disposed rotatably around the needle valve with a plurality of rotators in an axial direction and in a circumferential direction of the needle valve therebetween,
the bearing is movable at a distance equal to or longer than a circumferential length of one of the plurality of rotators in the axial direction of the needle valve, and
the plurality of rotators are wholly disposed between the linear guide and the peripheral surface of the needle valve.