US5863272A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Raise drill assembly with two-piece planetary third reduction hub and out put shaft
Assignee: Robbins TBM Inc
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Filing: 1997-03-04
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Granted: 1999-01-26
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Expires: 2017-03-04
Abstract
Abstract A two-piece planetary hub and output shaft for use in a planetary reduction gear drive assembly for a raise drill having a drive motor and a drive train path including first, second and third reduction gearing driving the planetary hub and output shaft. The hub and shaft are formed as two major pieces, an upper hub and a lower output shaft which are rigidly interconnected by three planet gear shafts each engaging a hole in said hub and a recess in said lower output shaft. Such interconnection is suitably by taper lock bushing assemblies locking the shafts to both said hub and said shaft. Transfer of torque occurs essentially through the planet shafts and the hub, and transfer of load occurs essentially through the output shaft.
Inventors
- 👤 Llewellan Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:34
CPC Classifications
F; F16; F16H; F16H1/00; F16H1/28; F16H1/46; F16H57/00; F16H57/08; F16H57/082
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
69 words
A two-piece planetary hub and output shaft combination for use in a planetary reduction gear drive assembly having a drive train path including first, second and third reduction gearing driving the planetary hub and output shaft, the planetary hub and output shaft being separately formed and rigidly interconnected by a plurality of planet gear shafts each engaging a hole in the hub and a recess in the output shaft.
Claim 2
Dependent Claim
69 words
A two-piece planetary hub and output shaft combination for use in a planetary reduction gear drive assembly having a drive train path including first, second and third reduction gearing driving the planetary hub and output shaft, the planetary hub and output shaft being separately formed and rigidly interconnected by a plurality of planet gear shafts each engaging a hole in the hub and a recess in the output shaft.
Claim 3
Dependent Claim
90 words
A two-piece planetary hub and output shaft combination for use in a planetary reduction gear drive assembly having a drive train path including first, second and third reduction gearing driving the planetary hub and output shaft, the planetary hub and output shaft being separately formed and rigidly interconnected by three planet gear shafts each engaging a hole in the planetary hub and a recess in the output shaft, such interconnection being by taper lock bushing assemblies locking the planet gear shafts to both the planetary hub and the output shaft.
Claim 4
Dependent Claim
90 words
A two-piece planetary hub and output shaft combination for use in a planetary reduction gear drive assembly having a drive train path including first, second and third reduction gearing driving the planetary hub and output shaft, the planetary hub and output shaft being separately formed and rigidly interconnected by three planet gear shafts each engaging a hole in the planetary hub and a recess in the output shaft, such interconnection being by taper lock bushing assemblies locking the planet gear shafts to both the planetary hub and the output shaft.
Claim 5
Dependent Claim
136 words
In a planetary reduction gear drive assembly having an input reduction stage, at least one intermediate reduction stage, and a final reduction stage, an improved final reduction stage comprising: a hub having an axis and a periphery, and defining an axially concentric cylindrical recess at one end and a plurality of peripherally located, axially aligned hole pairs for receiving a plurality of pinion gear shafts; and an output shaft having an axis and a concentric annular ring portion at one end sized to fit within the cylindrical recess of the hub, the ring portion defining a plurality of recesses corresponding in number and location to the plurality of hub hole pairs whereby the hub is rotationally engaged with the output shaft when the plurality of pinion gear shafts are located in the plurality of hole pairs.
Claim 6
Dependent Claim
136 words
In a planetary reduction gear drive assembly having an input reduction stage, at least one intermediate reduction stage, and a final reduction stage, an improved final reduction stage comprising: a hub having an axis and a periphery, and defining an axially concentric cylindrical recess at one end and a plurality of peripherally located, axially aligned hole pairs for receiving a plurality of pinion gear shafts; and an output shaft having an axis and a concentric annular ring portion at one end sized to fit within the cylindrical recess of the hub, the ring portion defining a plurality of recesses corresponding in number and location to the plurality of hub hole pairs whereby the hub is rotationally engaged with the output shaft when the plurality of pinion gear shafts are located in the plurality of hole pairs.
Claim 7
Dependent Claim
35 words
The final reduction stage of claim 3 further comprising at least one taper lock bushing assembly for each hole pair to removably lock the pinion gear shaft to both the hub and the output shaft.
Claim 8
Dependent Claim
16 words
The final reduction stage of claim 3 wherein three hole pairs are defined by the hub.
Claim 9
Dependent Claim
29 words
The final reduction stage of claim 5 further comprising three taper lock bushing assemblies to removably lock the pinion gear shaft to both the hub and the output shaft.
Claim 10
Dependent Claim
15 words
The final reduction stage of claim 6 wherein the output shaft is a hollow cylinder.
Claim 11
Dependent Claim
136 words
A planetary gear reduction assembly comprising: a ring gear having an axis; a hub having an axis, a periphery, and defining an axially concentric cylindrical recess at one end and a plurality of peripherally located, axially aligned hole pairs for receiving a plurality of pinion gear shafts, the hub being coaxially disposed in the ring gear; an output shaft having an axis and a concentric annular ring portion at one end sized to fit within the cylindrical recess of the hub, the ring portion defining a plurality of recesses corresponding in number and location to the plurality of hub hole pairs; and a plurality of pinion gears having pinion gear shafts whereby the hub is rotationally engaged with the output shaft when the plurality of pinion gear shafts are located in the plurality of hole pairs.
Claim 12
Dependent Claim
136 words
A planetary gear reduction assembly comprising: a ring gear having an axis; a hub having an axis, a periphery, and defining an axially concentric cylindrical recess at one end and a plurality of peripherally located, axially aligned hole pairs for receiving a plurality of pinion gear shafts, the hub being coaxially disposed in the ring gear; an output shaft having an axis and a concentric annular ring portion at one end sized to fit within the cylindrical recess of the hub, the ring portion defining a plurality of recesses corresponding in number and location to the plurality of hub hole pairs; and a plurality of pinion gears having pinion gear shafts whereby the hub is rotationally engaged with the output shaft when the plurality of pinion gear shafts are located in the plurality of hole pairs.
Claim 13
Dependent Claim
37 words
The planetary gear reduction assembly of claim 8 further comprising at least one taper lock bushing assembly for each pinion gear shaft to removably lock the pinion gear shaft to both the hub and the output shaft.
Claim 14
Dependent Claim
17 words
The planetary gear reduction assembly of claim 8 wherein three hole pairs are defined by the hub.
Claim 15
Dependent Claim
30 words
The planetary gear reduction assembly of claim 10 further comprising three taper lock bushing assemblies to removably lock the pinion gear shaft to both the hub and the output shaft.
Claim 16
Dependent Claim
16 words
The planetary gear reduction assembly of claim 11 wherein the output shaft is a hollow cylinder.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-01-25 | 2002-07-27 | 2003-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-01-25 | 2006-07-27 | 2007-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-01-25 | 2010-07-27 | 2011-01-26 | $7700.00 | Window Closed / Lapsed |