US 12,247,631 B2
Lubrication system
K. Marlin Gehman, Harleysville, PA (US)
Assigned to K.M. Gehman Incorporated, Souderton, PA (US)
Filed by K.M. Gehman Incorporated, Souderton, PA (US)
Filed on Mar. 1, 2024, as Appl. No. 18/593,560.
Application 18/593,560 is a continuation of application No. 18/180,461, filed on Mar. 8, 2023.
Application 18/180,461 is a continuation of application No. 17/653,292, filed on Mar. 3, 2022, granted, now 11,603,897, issued on Mar. 14, 2023.
Application 17/653,292 is a continuation of application No. 17/060,122, filed on Oct. 1, 2020, granted, now 11,293,511, issued on Apr. 5, 2022.
Claims priority of provisional application 62/910,906, filed on Oct. 4, 2019.
Prior Publication US 2024/0200629 A1, Jun. 20, 2024
Int. Cl. F16F 1/376 (2006.01); B60G 7/00 (2006.01); B60G 7/02 (2006.01); B60G 11/00 (2006.01); F16F 1/373 (2006.01)
CPC F16F 1/376 (2013.01) [B60G 7/001 (2013.01); B60G 7/02 (2013.01); B60G 11/003 (2013.01); F16F 1/3732 (2013.01); B60G 2200/14 (2013.01); B60G 2202/14 (2013.01); B60G 2204/143 (2013.01); B60G 2204/41 (2013.01); B60G 2204/422 (2013.01); B60G 2206/12 (2013.01); B60G 2206/16 (2013.01); B60G 2206/73 (2013.01); F16F 2224/025 (2013.01); F16F 2228/001 (2013.01); F16F 2230/04 (2013.01); F16F 2234/02 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A lubrication system comprising:
a coupling;
a bushing in the coupling;
a lubricant inlet to the coupling;
a flat surface against a front surface of the bushing; and
a path for lubricant to flow from the lubricant inlet to a groove on the front surface of the bushing and out between the flat surface and the front surface to lubricate an interface between the flat surface and the front surface, wherein the groove extends to an end adjacent to an outer rim of the bushing.