Castellation assembly, lash capsule, and rocker arm

US11905859B2 · kind B2 · utility

Assignee

• Eaton Intelligent Power Limited · IE

Inventors

• Andrei Dan Radulescu · Marshall, US
• Ramy Rezkalla · Kalamazoo, US
• Daniel A. Nelson · Charlottesville, US
• James R. Sheren · Grand Ledge, US
• Michele Angelo Cecchi · Torino, IT
• Marco Ravoni · Chieti, IT
• Maria Letizia Ciardullo · Cosenza, IT

Key dates

• Filing date: Feb 19, 2021
• Grant date: Feb 20, 2024
• Expiry date: Feb 19, 2041

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F01L2305/00
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A castellation assembly comprises a lost motion spring assembly, an upper castellation piece, and a lower castellation piece. A spring hat comprises a crown, a pin hole through the crown, and a brim. A lost motion spring is seated against the spring hat. Upper castellation piece comprises a tubular body, an upper inner rim adjoining the brim, and upper castellation teeth. Lower castellation piece comprises a spring post extending up from a castellation body, the spring post passing through the lost motion spring, and through the pin hole. Lower castellation teeth extend from the castellation body. The lost motion spring is biased against the castellation body to lift the upper inner rim by the brim. A lash screw can house the spring post so that the spring post terminates inside the lash screw. A rocker arm is an example of a castellation assembly installation.