Patent US3892986A successfully refreshed from Google Patents.
US3892986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gearmotor with removable pinion
Assignee: Amtech Inc
•
Filing: 1973-09-20
•
Granted: 1975-07-01
•
Expires: 1993-09-20
Abstract
Abstract A gearmotor assembly wherein a pinion shaft has an interferencefit with the motor shaft and has an annular groove formed therein defining a shoulder for forcibly removing the pinion shaft from the motor shaft. The end of the motor shaft is received in an opening in the pinion shaft and has a reduced diameter pilot portion at the end thereof for providing and holding alignment of the motor and pinion shafts during assembly.
Inventors
- 👤 Howard G Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:01
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/10; H02K7/116; H02K7/1163
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
108 words
A gearmotor assembly including a motor having a stator assembly and a rotor assembly including a shaft having first and second portions; bearing means rotatably supporting said rotor assembly; power transmitting means including an input gear coaxially connected with said shaft; a gear box having output gear means; said input gear meshing with said output gear means; said power transmitting means being assembled with said shaft, and being provided with abutment means adapted for use when removing said power transmitting means from said shaft; said power transmitting means includes a pinion and pinion shaft, and the abutment means comprises a shoulder of greater diameter than said pinion shaft.
Claim 2
Dependent Claim
108 words
A gearmotor assembly including a motor having a stator assembly and a rotor assembly including a shaft having first and second portions; bearing means rotatably supporting said rotor assembly; power transmitting means including an input gear coaxially connected with said shaft; a gear box having output gear means; said input gear meshing with said output gear means; said power transmitting means being assembled with said shaft, and being provided with abutment means adapted for use when removing said power transmitting means from said shaft; said power transmitting means includes a pinion and pinion shaft, and the abutment means comprises a shoulder of greater diameter than said pinion shaft.
Claim 3
Dependent Claim
41 words
The assembly of claim 1 wherein said power transmitting means is assembled with an interference-fit with said shaft; said shaft having a reduced-diameter pilot portion at the end thereof for facilitating coaxial alignment of said shaft and said power transmitting means.
Claim 4
Dependent Claim
134 words
A gearmotor assembly including a motor having a stator assembly and a rotor assembly including a shaft having first and second portions; bearing means rotatably supporting said rotor assembly; power transmitting means including an input gear coaxially connected with said shaft; a gear box having output gear means; said input gear meshing with said output gear means; said power transmitting means being assembled with said shaft with an interference-fit; said shaft having a reduced-diameter pilot portion at an end thereof for facilitating coaxial alignment of said shaft and said power transmitting means; said power transmitting means includes a pinion, pinion shaft, and abutment means adapted for use in removing the power transmitting means from the shaft of the rotor assembly; said abutment means comprising a shoulder adjacent to a groove in said pinion shaft.
Claim 5
Dependent Claim
134 words
A gearmotor assembly including a motor having a stator assembly and a rotor assembly including a shaft having first and second portions; bearing means rotatably supporting said rotor assembly; power transmitting means including an input gear coaxially connected with said shaft; a gear box having output gear means; said input gear meshing with said output gear means; said power transmitting means being assembled with said shaft with an interference-fit; said shaft having a reduced-diameter pilot portion at an end thereof for facilitating coaxial alignment of said shaft and said power transmitting means; said power transmitting means includes a pinion, pinion shaft, and abutment means adapted for use in removing the power transmitting means from the shaft of the rotor assembly; said abutment means comprising a shoulder adjacent to a groove in said pinion shaft.
Claim 6
Dependent Claim
164 words
A gearmotor assembly including a motor having a stator assembly and a rotor assembly including a shaft having first and second portions; bearing means rotatably supporting said rotor assembly; power transmitting means including an input gear coaxially connected with said shaft; a gear box having output gear means; said input gear and output gear means being of the skew-axis type with said input gear meshing with said output gear means; said power transmitting means being assembled with said shaft with an interference-fit; said shaft having a reduced-diameter pilot portion at an end thereof for facilitating coaxial alignment of said shaft and said power transmitting means; said power transmitting means includes a pinion and pinion shaft, said pinion shaft including a bore defining surface interferingly fitted to the shaft of the rotor assembly, and said pinion shaft having a reduced diameter groove with an immediately adjacent increased diameter shoulder, the increased diameter shoulder adapted for use when removing said power transmitting means from said shaft.
Claim 7
Dependent Claim
164 words
A gearmotor assembly including a motor having a stator assembly and a rotor assembly including a shaft having first and second portions; bearing means rotatably supporting said rotor assembly; power transmitting means including an input gear coaxially connected with said shaft; a gear box having output gear means; said input gear and output gear means being of the skew-axis type with said input gear meshing with said output gear means; said power transmitting means being assembled with said shaft with an interference-fit; said shaft having a reduced-diameter pilot portion at an end thereof for facilitating coaxial alignment of said shaft and said power transmitting means; said power transmitting means includes a pinion and pinion shaft, said pinion shaft including a bore defining surface interferingly fitted to the shaft of the rotor assembly, and said pinion shaft having a reduced diameter groove with an immediately adjacent increased diameter shoulder, the increased diameter shoulder adapted for use when removing said power transmitting means from said shaft.
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) | 1978-06-30 | 1978-12-30 | 1979-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-30 | 1982-12-30 | 1983-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-30 | 1986-12-30 | 1987-07-01 | $7700.00 | Window Closed / Lapsed |