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| Hydraulic servo for friction coupling element of automatic transmission |
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| Transmission assembly for tractors |
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| Multi-position ratchet mechanism |
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| Annular hole cutter |
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Trunnion reinforcing ring
| Details |
Inventors: Skelton, Jack E.; Barnholt, Mark C.; Ballinger, Patrick J.;
Assignee: Dana Corporation (Toledo, OH)
Primary Examiner: Luong; Vinh T.
Assistant Examiner:
Attorney, Agent or Firm: Oldham & Oldham Co., LPA
An apparatus comprising a support structure having at least one trunnion which is adapted to receive a generally cylindrical hollow tube. The trunnion includes an annular groove formed in an outer surface. The apparatus further comprises an annular reinforcing ring disposed in the annular groove. The support structure is preferably made of a non-ferrous metallic alloy and the reinforcing ring may be made of either a ferrous metal, such as iron or a steel alloy, or may be made of a composite material. The support structure may comprise an axle carrier or a disconnect housing of an axle drive assembly, or any other support structure having a trunnion which accepts a generally cylindrical hollow tube. The support structure may comprise a casting, and the reinforcing ring may comprise a prefabricated, one-piece construction which is cast in place in the trunnion groove of the support structure. Alternatively, the reinforcing ring may comprise a prefabricated one-piece construction which is pressed in place in the trunnion groove, or may comprise a two-piece construction with each piece disposed in the trunnion groove and fastened to one another. |
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DETAILED DESCRIPTION Referring now to the drawings, wherein like reference numerals have been used for similar elements throughout, FIG.
1 is a cross-sectional view illustrating an axle assembly 10 which incorporates a support structure such as axle carrier 12 according to the present invention.
Axle assembly 10 comprises a beam axle assembly, where the axle assembly 10 supports the suspension loads of the associated vehicle.
The axle assembly 10 may comprise a forward axle assembly, which is subjected to significant impact loads, but axle assembly 10 may also be advantageously utilized as a rear axle assembly.
Axle carrier 12 includes a shaft receiving portion 14, a central, differential-receiving portion 16 attached to shaft receiving portion 14, and a pair of generally cylindrical, hollow trunnions 18, 18' protruding from opposite sides of the differential-receiving portion 16.
Axle carrier 12 preferably comprises a one-piece construction and preferably is made of a cast aluminum alloy.
Alternatively, carrier 12 may be made of a cast magnesium alloy, or may be cast from other suitable lightweight alloys.
Additionally, carrier 12 may alternatively comprise a two-piece construction and may be manufactured by methods other than casting.
Axle carrier 12 may optionally include strengthening ribs 20 and 22.
Assembly 10 further includes a cover 21 which is fastened to carrier 12 with bolts 23 and includes a pair of generally cylindrical, hollow axle tubes 24,24' with each of the tubes 24,24' being respectively inserted into one of the trunnions 18,18'.
Axle carrier 12 combines with each of the axle tubes 24,24' to form a pair of carrier-type axle housings.
Assembly 10 includes a pinion shaft 26 carrying yoke 28 at a first end 30 of shaft 26.
Yoke 28 is secured to end 30 of shaft 26 via nut 32 and is effective for receiving torque from driving member (not shown) of the motor vehicle.
A pinion gear 34 is rigidly affixed to a second, opposite end 36 of shaft 26.
Pinion shaft 26 is rotatably supported within the shaft-receiving portion 14 of axle carrier 12 via bearing assemblies 38 and 40, respectively
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Metal Working 
