Hamilton Sundstrand Corporation

Colt's Manufacturing Company, Inc.

Colt's Manufacturing IP Holding Company LLC

Eric J Talasco

Paul A Carvalho

Robert H Perkinson

Kevin R Langevin

David R Danielson

Kevin Richard Langevin

A modular rail system for an upper receiver of a firearm is provided, the modular rail system having: a bottom portion configured to be removably secured to the upper receiver, wherein the bottom portion has an integrally formed bottom rail and a forward portion located forward of a top rail of the upper receiver; an upper rail extension configured to be removably secured to the forward portion of the bottom portion; and a release mechanism for releasably securing the upper portion to the forward portion of the bottom portion.

Modular upper receiver and firearm with modular upper receiver

A method of controlling a Counter-Rotating Open-Rotor (CROR) includes measuring a speed of a first rotor and deriving a speed of a second rotor and controlling a pitch of the first rotor and the second rotor.

Counter-rotating open-rotor (CROR)

A trigger mechanism for a firearm, the trigger mechanism having: a trigger for actuating a hammer of the trigger mechanism, wherein actuation of the trigger causes the hammer to advance to a firing position; and a release configured for movement between a first position and a second position, the release must be first actuated from the first position to the second position and thereafter from the second position to the first position in order to allow for the hammer to advance to the firing position.

Firearm trigger mechanism, firearm and method of controlling a rate of the firearm

A propeller blade mounted with a preload adjacent a propeller blade root retention which increases the moment capacity of the retention for a given pitch diameter, yet permits pitching of the propeller blade about a blade axis in response to a propeller pitch change actuation system. The propeller blade retention assembly includes a tapered roller bearing set having a multiple of tapered roller bearing cartridge assemblies. Each tapered roller bearing cartridge assembly includes a retention cartridge and at least one tapered roller bearing element to facilitate installation and retention during assembly.

Propeller blade retention system with tapered roller bearing cartridge assemblies

The expense of a bearing employed at the interface of a yoke ( ) and a propeller blade pin ( ) in a variable pitch propeller assembly is reduced in a bearing construction ( ) wherein a bearing race ( ) includes a crowned surface ( ) adapted to engage a slot ( ) in the yoke ( ) and having a profile (P ) wherein the diameter at one side ( ) of the race ( ) is less than the diameter at the opposite side ( ) of the race ( ).

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Windsor Locks, CT, United States of America

Eric J Talasco