Clutch locking plate with oil slinger
AssigneeHamilton Sundstrand Corporation
InventorsDean A. Norem, Jody A. Peterson
Life of this patent
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Abstract
A locking plate for use in an air turbine starter has a lock plate body including an oil slinger extending away from a base. The base is positioned on an outer peripheral surface of a clutch frame. The slinger extends away from the base for a distance, and a ratio of the distance to a thickness of the base is ten and thirty. A clutch and air turbine starter, and a method of assembly are also disclosed.
Claims20
A locking plate for use in an air turbine starter comprising:
- a lock plate body including an oil slinger extending away from a base, said base to be positioned on an outer peripheral surface of a clutch frame, and said slinger extending away from the base for a distance, and a ratio of said distance to a thickness of said base is between ten and thirty.
A clutch comprising:
- a clutch frame having an inner bore, and an outer peripheral surface, at least one bolt extending through a hole in said outer peripheral surface, and into said inner bore, said at least one bolt sandwiching a locking plate between a head of said bolt and said outer peripheral surface of said clutch frame, said bolt securing a spring within said inner bore, said locking plate including an oil slinger extending away from a base, said base being positioned on the outer peripheral surface, and said oil slinger extending radially away from a central axis of said clutch frame for a greater distance than the head of said bolt;
- and
- said clutch frame further mounting a pawl, said spring biasing said pawl in a rotational direction about a pivot pin.
An air turbine starter comprising:
- a turbine rotor for selectively being driven within a housing;
- a clutch frame having an inner bore, and an outer peripheral surface, at least one bolt extending through a hole in said outer peripheral surface, and into said inner bore, said at least one bolt sandwiching a locking plate between a head of said bolt and said outer peripheral surface of said clutch frame, said bolt securing a spring within said inner bore, said locking plate including an oil slinger extending away from a base, said base being positioned on the outer peripheral surface, and said oil slinger extending radially away from a central axis of said clutch frame for a greater distance than the head of said bolt;
- said turbine rotor driving a clutch plate through a planetary gear system, and said clutch frame driving an output shaft for being utilized as a starter input to start a prime mover;
- said clutch frame further mounting a pawl, said spring biasing said pawl in a rotational direction about a pivot pin;
- and
- said pawls selectively engaging teeth in said clutch plate, such that said pawls can be biased out of said teeth to allow relative rotation between said clutch plate and said clutch frame, and biased into said teeth to cause said clutch frame and said clutch plate to rotate together.
A method of installing a locking plate with an integral oil slinger on a clutch frame in an air turbine starter comprising the steps of:
- (a) providing a clutch frame having a plurality of holes for receiving a locking plate;
- (b) placing a locking plate on an outer periphery of the clutch frame, and placing a spring within an inner bore of the clutch frame, and moving a bolt through the locking plate and the hole to secure the spring in the inner bore, the spring being positioned to bias a pawl;
- and
- (c) mounting said clutch frame into an air turbine starter such that the oil slinger will extend into oil within a housing for the air turbine starter, with the oil slinger extending away from a central axis of the clutch frame for a relatively great distance.
Dependencies are inferred from the claim text.