公开(公告)号：WO2023049001A1

公开(公告)日：2023-03-30

申请号：PCT/US2022/043405

申请日：2022-09-14

Applicant: CATERPILLAR INC.

Inventor： KANNIAPPAN, Gopalakrishnan ,  RAMKUMAR, Chandana

IPC: H02K13/00 ,  H01R39/08

Abstract: An alternator (100) includes a housing (102) and a rotary shaft (118). The alternator (100) includes one or more brushes (136) supported by the housing (102). The alternator (100) includes a slip ring assembly (138, 638) coupled to the rotary shaft (118) for rotating with the rotary shaft (118). The slip ring assembly (138, 638) includes one or more slip rings (140, 640). The one or more slip rings (140, 640) include a body portion (142, 642) defining an outer surface (144, 644). The one or more slip rings (140, 640) also include an oxide layer (150, 650) disposed on the outer surface (144, 644) of the body portion (142, 642). The oxide layer (150, 650) is non-uniform. The oxide layer (150, 650) is formed on account of a thermal oxidation process of the one or more slip rings (140, 640) during an operation of the alternator (100). Further, the thermal oxidation process for formation of the oxide layer (150, 650) initiates when an operating temperature of one or more components of the alternator (100) lies within a predetermined temperature threshold range (R1, R2).

公开(公告)号：WO2022271447A1

公开(公告)日：2022-12-29

申请号：PCT/US2022/032623

申请日：2022-06-08

Applicant: CATERPILLAR INC.

Inventor： KANNIAPPAN, Gopalakrishnan ,  WORTH, David ,  FAYVILLE, Nicholas, John ,  LARIMORE, Derek, D.

IPC: E02F3/40 ,  E02F9/28 ,  E02F9/2883

Abstract: A fatigue life optimized modular bucket assembly (1) for a work machine (3) and a method of manufacturing thereof are disclosed. The bucket assembly (1) includes a bucket core (100) having a pair of side sections (110), a continuous wrapper (120), a supporting element (130), and a receptacle (199); and an extension module (200) having a pair of side bars (210), a guard module (220), an edge module (230), and, optionally, a set of extension plates (240, 250, 260). The method includes prebuilding the bucket core (1310), receiving an order (1320), manufacturing the extension module (1330), and assembling the bucket core and the extension module (1340). Advantageously, the bucket assembly (1) may include both universal and customizable components without exhibiting a reduction to fatigue life commonly associated with weld seams.