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US 11,274,699 B2Granted
Double row needle track roller bearing with a thrust load carrying ball bearing
AssigneeRoller Bearing Company of America, Inc.
InventorCurtis M. Swartley
Life of this patent
Estimating the term…
Abstract
A bearing includes an outer ring with a first outer roller race, a second outer roller race, and a radially inward facing outer ball race. The bearing includes a first and second inner rings that axially abutting one another at an abutment interface. The first inner ring has a first inner roller race, the second inner ring has a second inner roller race that are disposed in an interior area coaxially with the outer ring. A plurality of first rollers rollingly engage the first outer roller race and the first inner roller race. A plurality of second rollers rollingly engage the second outer roller race and the second inner roller race. A plurality of balls rollingly engage the outer ball race and the inner ball race.
Claims20
A bearing comprising:
- a single piece outer ring comprising a radially inward facing first outer roller race, a radially inward facing second outer roller race and a radially inward facing outer ball race, the first outer roller race, the second outer roller race and the outer ball race defining an interior area of the outer ring;
- an inner ring assembly comprising a first inner ring and a second inner ring axially abutting one another at an abutment interface, the first inner ring having a radially outward facing first inner roller race, the second inner ring having a radially outward facing second inner roller race, the inner ring assembly being disposed in the interior area coaxially with the outer ring, and a radially outward facing inner ball race formed in at least one of the first inner ring and the second inner ring;
- a plurality of first rollers each having a first roller diameter, each of the plurality of first rollers rollingly engaging the first outer roller race and the first inner roller race;
- a plurality of second rollers each having a second roller diameter, each of the plurality of second rollers rollingly engaging the second outer roller race and the second inner roller race;
- and
- a plurality of balls each having a ball diameter and a center point, each of the plurality of balls rollingly engaging the outer ball race and the inner ball race,
- wherein each of the center points is aligned with the first inner roller race and the second inner roller race.
4 more elements
An actuation system for deploying and retracting a lift assisting device of a wing of an aircraft, the actuation system comprising:
- a track pivotally coupled to the lift assisting device, the track having a first outer surface and a second outer surface opposite the first outer surface;
- a plurality of bearings each comprising:
- a single piece outer ring comprising a radially inward facing first outer roller race, a radially inward facing second outer roller race and a radially inward facing outer ball race, the first outer roller race, the second outer roller race and the outer ball race defining an interior area of the outer ring;
- an inner ring assembly comprising a first inner ring and a second inner ring axially abutting one another at an abutment interface, the first inner ring having a radially outward facing first inner roller race, the second inner ring having a radially outward facing second inner roller race, the inner ring assembly being disposed in the interior area coaxially with the outer ring, and a radially outward facing inner ball race formed in at least one of the first inner ring and the second inner ring;
- a plurality of first rollers each having a first roller diameter, each of the plurality of first rollers rollingly engaging the first outer roller race and the first inner roller race;
- a plurality of second rollers each having a second roller diameter, each of the plurality of second rollers rollingly engaging the second outer roller race and the second inner roller race;
- and
- a plurality of balls each having a ball diameter and a center point, each of the plurality of balls rollingly engaging the outer ball race and the inner ball race,
- wherein each of the center points is aligned with the first inner roller race and the second inner roller race, and
- wherein the outer ring has an outside surface that rollingly contacts one of the first outer surface and the second outer surface of the track to guide the track along an arcuate path.
7 more elements
A bearing comprising:
- a single piece outer ring comprising a radially inward facing first outer roller race having a first inside diameter, a radially inward facing second outer roller race having a second inside diameter and a radially inward facing outer ball race having a maximum inside diameter, the first outer roller race, the second outer roller race and the outer ball race defining an interior area of the outer ring;
- an inner ring assembly comprising a first inner ring and a second inner ring axially abutting one another at an abutment interface, the first inner ring having a radially outward facing first inner roller race, the second inner ring having a radially outward facing second inner roller race, the inner ring assembly having a longitudinal axis and being disposed in the interior area coaxially with the outer ring, and a radially outward facing inner ball race formed in at least one of the first inner ring and the second inner ring;
- a plurality of first rollers each having a first roller diameter, each of the plurality of first rollers rollingly engaging the first outer roller race and the first inner roller race;
- a plurality of second rollers each having a second roller diameter, each of the plurality of second rollers rollingly engaging the second outer roller race and the second inner roller race;
- and
- a plurality of balls each having a ball diameter and a center point, each of the plurality of balls rollingly engaging the outer ball race and the inner ball race,
- wherein the maximum inside diameter of the outer ball race is less than the first inside diameter and less than the second inside diameter.
4 more elements
An actuation system for deploying and retracting a lift assisting device of a wing of an aircraft, the actuation system comprising:
- a track pivotally coupled to the lift assisting device, the track having a first outer surface and a second outer surface opposite the first outer surface;
- a plurality of bearings each comprising:
- a single piece outer ring comprising a radially inward facing first outer roller race having a first inside diameter, a radially inward facing second outer roller race having a second inside diameter and a radially inward facing outer ball race having a maximum inside diameter, the first outer roller race, the second outer roller race and the outer ball race defining an interior area of the outer ring;
- an inner ring assembly comprising a first inner ring and a second inner ring axially abutting one another at an abutment interface, the first inner ring having a radially outward facing first inner roller race, the second inner ring having a radially outward facing second inner roller race, the inner ring assembly having a longitudinal axis and being disposed in the interior area coaxially with the outer ring, and a radially outward facing inner ball race formed in at least one of the first inner ring and the second inner ring;
- a plurality of first rollers each having a first roller diameter, each of the plurality of first rollers rollingly engaging the first outer roller race and the first inner roller race;
- a plurality of second rollers each having a second roller diameter, each of the plurality of second rollers rollingly engaging the second outer roller race and the second inner roller race;
- and
- a plurality of balls each having a ball diameter and a center point, each of the plurality of balls rollingly engaging the outer ball race and the inner ball race,
- wherein the maximum inside diameter of the outer ball race is less that the first inside diameter and less than the second inside diameter, and
- wherein the outer ring has an outside surface that rollingly contacts one of the first outer surface and the second outer surface of the track to guide the track along an arcuate path.
7 more elements
Dependencies are inferred from the claim text.