Ring gear/pinion gear design
AssigneeEaton Corporation
InventorsCraig B. Anderson, George W. Vollmer
Life of this patent
Estimating the term…
Abstract
A design for a series of ring gear and pinion gear right angle gear-sets (100) utilizing a single common ring gear (114) and a plurality of pinion gears (112A-D), each having different numbers of teeth, is provided.
Claims12
A series of substantially right angle ring gear/pinion gear gear-sets of one of substantially spiral bevel type and substantially hypoid type gearing for heavy-duty drive axles comprising a common ring gear having X number of teeth and a given pitch diameter and a first, second and third pinion gear having A, B, and C, respectively, number of teeth each interchangeably engagable with said ring gear to define X/A, X/B and X/C ratio, respectively, gear-sets, the gear tooth geometry of each of said pinion gears selected to provide substantially equal drive pressure angles for each of said gear-sets and substantially equal coast pressure angles for each of said gear sets wherein:
- A, B, C and X are positive integers;
- A<B<C<X;
- said pinion gear having B number of teeth and said ring gear are of substantially conventional design for an X/B ring gear/B tooth pinion gear gear-set;
- and
- said A number of teeth pinion gear has a greater root angle and a greater face angle than a conventionally designed A number of teeth pinion gear designed for an X/A ring gear/A tooth pinion gear gear-set, said C number of tooth pinion gear has a smaller root angle and a smaller face angle than a conventionally designed C number of tooth pinion gear designed for an X/C ring gear/C tooth pinion gear gear-set.
A series of substantially right angle ring gear/pinion gear gear-sets of one of substantially spiral bevel type and substantially hypoid type gearing for heavy-duty drive axles comprising a common ring gear having X number of teeth and a given pitch diameter and a first, second and third pinion gear having A, B, and C, respectively, number of teeth each interchangeably engagable with said ring gear to define X/A, X/B and X/C ratio, respectively, gear-sets, the gear tooth geometry of each of said pinion gears selected to provide substantially equal drive pressure angles for each of said gear-sets and substantially equal coast pressure angles for each of said gear sets wherein:
- A, B, C and X are positive integers;
- A<B<C<X;
- said pinion gear having A number of teeth and said ring gear are of substantially conventional design for an X/A ring gear/A tooth pinion gear gear-set;
- and
- said B number of teeth pinion gear has a smaller root angle and a smaller face angle than a conventionally designed B number of teeth pinion gear designed for an X/B ring gear/B tooth pinion gear gear-set, said C number of tooth pinion gear has a smaller root angle and a smaller face angle than a conventionally designed C number of tooth pinion gear designed for an X/C ring gear/C tooth pinion gear gear-set.
Dependencies are inferred from the claim text.