Class 416/165 - Reciprocated by coaxial screw

Subclass of Class 416 - Fluid reaction surfaces (i.e., impellers)
Definition: Apparatus wherein the sleeve, collar or rod is reciprocated
No. of patents: 27
Last issue date: 05/24/2005

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Number	Title	Issue Date
6896564	Motor for driving a propeller including a phase adjuster A motor for driving a propeller is disclosed which has a drive shaft (10) which is coupleable to a propeller shaft (20) by bevel gears (12 and 14) so as to rotate the shaft (20) to in turn rotate propeller blades P of an outboard m...	05/24/2005
6688926	Motor for driving a propeller including a phase adjuster for altering the pitch of the propeller blades A motor for driving a propeller is disclosed which has a drive shaft (10) which is coupleable to a propeller shaft (20) by bevel gears (12 and 14) so as to rotate the shaft (20) to in turn rotate propeller blades P of an outboard motor. The drive shaft (2...	02/10/2004
6364610	Manually adjustable variable-pitch boat propeller A variable-pitch boat propeller has a hub rotatable about a hub axis, a plurality of vanes rotatable on the hub and extending generally radially of the hub axis, and an adjustment element rotatable on the hub about the hub axis and connected to the vanes ...	04/02/2002
6071076	Actuation system for a gas turbine rotor blade An actuation system which includes apparatus for transferring control signals for varying the blade pitch from a non-rotating member to a rotating member of a gas turbine engine is described. In one embodiment, the engine includes a main disk containing a...	06/06/2000
6065933	Folding rotor blade/propeller drive and pitch control actuator A propulsion blade retraction and pitch control apparatus includes a hollow primary drive shaft, a pitch control gear assembly mounted, within a propeller hub, to the primary drive shaft, a radially spaced array of pitch control stub shafts mounted to, in...	05/23/2000
6042333	Adjustable pitch impeller An impeller has a plurality of rotating passageways which can be defined between adjacent blades, the blades having a curved root portion and able to pivot across a part spherical hub to maintain a fine line contact. The passageways have a convergence to ...	03/28/2000
5967753	Controllable-pitch propeller, especially for sport boats and other watercraft A controllable-pitch propeller for a sport-type watercraft has a push rod eccentrically connected to each blade displaceable in a bore of the propeller hub. The push rod is sealed with respect to the end of that bore by a multifold bellows whose radial fl...	10/19/1999
5931637	Propeller with variable rate of pitch change A propeller is controlled to change pitch at at least two different rates. In one embodiment, an electric motor is provided with a high or low voltage for driving a pitch change mechanism at a high or low change rate. Preferably the rate is selected autom...	08/03/1999
5779446	Air driven turbine including a blade pitch control system An air driven turbine having variable pitched blades is provided that includes a pitch change mechanism and associated control circuits for automatically adjusting the pitch of the blades during either rotating or non-rotating operational modes of the air...	07/14/1998
5462410	Damper and seal for propeller quill shaft Damping and sealing of the quill shaft (30) that transmits torque from one rotating component to another as for example in a pitch change actuator system for aeronautical propellers is provided by an O-ring (40) mounted in the space between the end of bal...	10/31/1995
5451141	Propeller pitch change machanism with inductive brake and motor Pitch change for a variable pitch propeller or fan of the type utilized in a gas turbine engine is effectuated by the unique application of a bidirectional electrical induction AC motor and an electrical DC induction brake operatively connected to the pit...	09/19/1995
5431539	Propeller pitch change mechanism The pitch change mechanism for a variable pitch propeller blade or Advanced Ducted Propulsor (ADP) interconnecting the pitch change actuator and the propeller blades of the type that includes a trunnion attached to the root of the propeller blade, the con...	07/11/1995
5391055	Propeller pitch change mechanism with impulse turbines The pitch of either a fan or propeller driven by a gas turbine engine is changed by utilizing a pair of impulse turbines interfacing between the stationary and rotating portion of the fan or propeller and utilizing a servo control responding to a desired ...	02/21/1995
5282719	Quad mode fan pitch actuation system for a gas turbine engine Blade pitch is changed by an actuator that is responsive to the relative rotation of two input members. Blade pitch is not changed when the members are rotated at the same speed. However, blade pitch is changed in one direction when a braking torque is ap...	02/01/1994
5199850	Pitch stop assembly for variable pitch propulsor A pitch change system (30) for varying the pitch of the blades (16) of a multi-bladed propulsor (10) comprises a pitch change actuation assembly (40) and a pitch change drive assembly (70) for selectively actuating the pitch change actuation assembly (70)...	04/06/1993
5141399	Pitch change control system A pitch change actuation system is disclosed for adjusting the pitch of a variable pitch propeller blade (20) rotatably mounted to a hub (10) of the propeller. The pitch change actuator comprises a blade actuation piston (30) operatively connected to the ...	08/25/1992
5042966	Pitch control system A pitch control system has a main electronic control, a mechanical back-up control and a switching system for transferring pitch control from the electronic to the mechanical control in the event of electronic control failure. The switching system utilize...	08/27/1991
5037271	Pitch control system A pitch control system has a main electronic control, a mechanical back-up control and a switching system for transferring pitch control from the electronic to the mechanical control in the event of electronic control failure. The switching system utilize...	08/06/1991
4753572	Propeller pitch change actuation system A mechanical pitch lock includes a pitch lock screw (60) that simultaneously rotates within an actuator (42) while the actuator moves to change the pitch of a propeller blade (16). While rotating simultaneously with the motion of the pitch actuator, the p...	06/28/1988
4750862	Modular propeller blade pitch actuation system A modular, easily replaceable, pitch actuation system is removably secured within the hub of an aircraft. The modular system houses a driving system which provides a rotational output to set the pitch of propeller blades mounted to the hub, and a pitch ch...	06/14/1988
4671737	Blade pitch changing mechanism Overspeed conditions in a ram air turbine are eliminated through a novel blade pitching mechanism. The mechanism includes a rotatable shaft with a hub mounted thereon for rotation therewith. The hub rotatably mounts at least one blade and a hollow blade p...	06/09/1987
4591313	Propeller pitch control system and apparatus A plurality of propeller blades are mounted to an axially elongated tubular propeller hub (H1). Each blade is rotatable in position about a radial axis. An electromechanical linear actuator (A1) is housed within the hub for rotating the blades to change t...	05/27/1986
4527072	Divisible cabin for a windmill A cabin for a windmill comprises inherently rigid, self-supporting, relatively disengageable parts. Cabin parts which occasionally have to be submitted for repair and/or maintenance work are removable from the windmill. During the repair and/or maintenanc...	07/02/1985
4523891	Propeller pitch change actuation system A propeller pitch change actuation system comprises an input actuator (230) driving a ball screw (200). Operation of the ball screw rotates a torque tube (140) about the longitudinal axis thereof to drive a screw 145 and control valve 120 which controls t...	06/18/1985
4490093	Windpower system A windpower system includes a support and a turbine having a shaft rotatively mounted to the support. The turbine has variable pitch blades whose pitch is controlled by the differential motion of a rotary control shaft coaxial with the turbine shaft and t...	12/25/1984
4066911	Wind-driven prime mover A sail-type wind-driven prime mover is provided in which the area of the sails facing into the wind is adjustable. The prime mover comprises a drive shaft from which depend radially extending front and rear masts which support flexible sails. The area of ...	01/03/1978
3994128	Dual output variable pitch turbofan actuation system An improved actuating mechanism is provided for a gas turbine engine incorporating fan blades of the variable pitch variety, the actuator adapted to rotate the individual fan blades within apertures in an associated fan disc. The actuator includes means s...	11/30/1976

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Class 416/165 - Reciprocated by coaxial screw