Patent US3570235A successfully refreshed from Google Patents.
Patent US3849862A successfully refreshed from Google Patents.
US3849862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of assembling multiple gear differential
Assignee: DK-GLEASON Inc 2 JETVIEW DRIVE TOWN CHILI NY A NY CORP
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Filing: 1973-08-06
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Granted: 1974-11-26
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Expires: 1993-08-06
Abstract
Abstract This invention relates to a differential gear mechanism utilizing two substantially identical gear sets in a housing or cage adapted to be driven by a drive shaft. Each set has a central worm or traction gear, sometimes called a side gear, adapted to be keyed in one instance to one of the stub shafts leading to a rear wheel of an automotive vehicle. Each of these side gears is in mesh with a plurality of transfer gear complexes, each having located centrally thereof a worm wheel in mesh with the side gear and having a reversible balancing gear at each end of the worm wheel rigidly connected with the associated worm wheel and coaxial therewith. The method of assembling the mechanism includes placing a reference index point near the periphery of the worm gear, placing said transfer gear complexes in said case in positions corresponding to those arrived at by rotating said worm gear, and positioning each transfer gear complex with a selected reference point of the complex in the same relation to the reference index point as it passes, the reference point having the same relative position in each transfer gear complex.
Inventors
- 👤 R Benjamin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:25
CPC Classifications
F; F16; F16H; F16H48/00; F16H48/20; F16H48/28; F16H48/29; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49462; Y10T29/49464; Y10T29/49467; Y10T29/49469; Y10T29/49764; Y10T29/49778; Y10T29/4978; Y10T29/49826; Y10T29/4984
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
174 words
The method of assembling in a case, a differential gear mechanism comprising a central worm traction gear surrounded by a plurality of identical unitary transfer gear complexes each having a reversible balancing gear at each end and a worm wheel intermediate said balancing gears, said balancing gears and worm wheel being coaxial, each transfer gear complex being assembled in said case by means of a shaft for rotation with its axis parallel to a tangent to said worm gear and with its worm wheel meshing with said worm gear; said method including placing a reference index point near the periphery of said worm gear, and placing said transfer gear complexes in said case in positions corresponding to those arrived at by rotating said worm gear, and positioning each transfer gear complex with a selected reference point of the complex in the same relation to said reference index point as it passes, said reference point having the same relative position in each transfer gear complex, whereby eccentric oscillation of said worm gear is substantially eliminated.
Claim 2
Independent Claim
174 words
The method of assembling in a case, a differential gear mechanism comprising a central worm traction gear surrounded by a plurality of identical unitary transfer gear complexes each having a reversible balancing gear at each end and a worm wheel intermediate said balancing gears, said balancing gears and worm wheel being coaxial, each transfer gear complex being assembled in said case by means of a shaft for rotation with its axis parallel to a tangent to said worm gear and with its worm wheel meshing with said worm gear; said method including placing a reference index point near the periphery of said worm gear, and placing said transfer gear complexes in said case in positions corresponding to those arrived at by rotating said worm gear, and positioning each transfer gear complex with a selected reference point of the complex in the same relation to said reference index point as it passes, said reference point having the same relative position in each transfer gear complex, whereby eccentric oscillation of said worm gear is substantially eliminated.
Claim 3
Dependent Claim
90 words
The method of assembling a differential gear mechanism as defined in claim 1, wherein said reference point of each complex is at one end thereof and having a fixed circumferential relation with a driving key position determining the circumferential position of the helical threads of the worm wheel of the complex, and each transfer gear complex is fixed in said case when said reference index point of the associated worm traction gear substantially coincides with the mid-point of the worm wheel of the complex and said reference point is upward.
Claim 4
Dependent Claim
221 words
The method of assembling a differential gear mechanism as defined in claim 1, including the steps of (1) placing a first of said transfer gear complexes with its axis generally parallel to a tangent to said worm traction gear and in a predetermined position relative to said index point and with said worm wheel meshing with said worm traction gear and with said indicator in a predetermined radial position, (2) positioning said shaft to mount said first complex in said position in said case, (3) turning said worm traction gear and said complex already in mesh therewith until said reference index point reaches the next position to space another of said transfer gear complexes so that said plurality of complexes will be evenly spaced about the periphery of said worm traction gear, (4) repeat steps (1) and (2) with respect to said other complex, (5) continuing the repetition of steps (3), (1) and (2) until all of said complexes are assembled in said case, and assembling two of said differential mechanisms in a case with the worm traction gears thereof adjacent and coaxial and with said balancing gears of said two mechanisms in mesh and with the transfer gear complexes of one mechanism in order of assembly respectively opposite the complexes of the other mechanism in the same order of assembly.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |