Caterpillar Inc.

Arun Lal Gain

Thierry Andre Marchione

Tad W Miller

Rong Qu

Mark D Veliz

Yihong Yang

Walter Sherman Isenberg

Austin Joseph Schmidt

Nathan John Parsons

Marchione Thierry Andre

Stan Eads

Rui Yuan

A poppet valve has an elongated stem that is configured to extend along a longitudinal axis. The poppet valve further includes a valve body that is disposed laterally with respect to the longitudinal axis and located in a spaced apart relation with an end of the elongated stem. The valve body has a pair of opposing faces disposed co-axial with the longitudinal axis of the elongated stem. The poppet valve also includes at least two arcuately shaped appendages depending downwardly from the end of the elongated stem and extending away from the longitudinal axis of the elongated stem. An end of each appendage is disposed in abutment with an annular region defined on one of the opposing faces of the valve body, a perimeter of the annular region being larger than a perimeter of the elongated stem measured about the longitudinal axis.

Poppet valve for an internal combustion engine

A method for evaluating part for additive manufacturing is provided. The method includes receiving data related to a set of printability factors associated with the part. The set of printability factors comprise at least: an availability of a three dimensional printer, a build density, a fraction of part to be printed, a print accuracy, a part complexity, and a number of parts needed. The method includes evaluating a printability index associated with the part based on at least three printability factors from the set of printability factors. Further, the method includes displaying the printability index associated with the part for the evaluation of the part for additive manufacturing.

System and method for evaluating additive manufacturing index

A node for interconnecting frame members of a frame, the node including a single piece node body. A plurality of cup-shaped node connectors are disposed on the node body. Each of the plurality of node connectors include a closed end attached to the node body and an open end opposite the closed end and extending away from the node body. A sidewall extends between and connects the closed end to the open end. A tenon is formed on the open end. The tenon is shaped and sized to fit within a frame member. A transition is formed between the sidewall and the tenon defining a peripheral, radially outwardly facing groove in cooperation with the frame member, the groove shaped and sized to receive a weld.

Nodes for frame structures

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Champaign, IL, United States of America

Arun Lal Gain