Patent US4171147A successfully refreshed from Google Patents.
US4171147A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flywheel for a construction machine
Assignee: CMI Terex Corp
•
Filing: 1978-06-12
•
Granted: 1979-10-16
•
Expires: 1998-06-12
Abstract
Abstract A construction machine is provided with a flywheel having a torque limiter which permits the flywheel to slip when a rotationally driven cutting tool of the machine is halted. The torque limiter is spring loaded to eliminate the need for adjustment which might otherwise be occasioned by wear.
Inventors
- 👤 George W. Swisher, Jr.
- 👤 Donald W. Smith
- 👤 John F. Phillips
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:14
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/76; E02F3/78; E02F3/783; B; B28; B28D; B28D1/00; B28D1/18; E02F9/00; E02F9/20; E21; E21C; E21C35/00; E21C35/04; E21C35/043; F; F16; F16D; F16D7/00; F16D7/02; F16D7/024; F16D7/025; F16F; F16F15/00; F16F15/10; F16F15/12; F16F15/129; F16F15/30; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2121; Y10T74/2128
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
219 words
In a construction machine having a rotationally driven cutting tool, a drive train coupled to the cutting tool for rotating the cutting tool, and a flywheel coupled to the cutting tool for rotation about a flywheel axis upon rotation of the cutting tool, wherein the drive train is characterized as including a hydraulic motor, having an output shaft, and a gear reduction box, having an input shaft and wherein the cutting tool is connected to the gear reduction box for rotation in response to a rotation of the input shaft of the gear reduction box, the improvement wherein the flywheel comprises: a hub coupled to the cutting tool; an inertia wheel mounted on the hub for relative rotation of the inertia wheel about the hub; and torque limiting means for clamping the inertia wheel to the hub when a torque exerted between the inertia wheel and the hub is less than a preselected value and for permitting the inertia wheel to slip on the hub when a torque exerted between the inertia wheel and the hub attains the preselected value; and wherein the output shaft of the motor is connected to the input shaft of the gear reduction box via the hub of the flywheel, whereby the flywheel is coupled to the cutting tool via the gear reduction box.
Claim 2
Dependent Claim
219 words
In a construction machine having a rotationally driven cutting tool, a drive train coupled to the cutting tool for rotating the cutting tool, and a flywheel coupled to the cutting tool for rotation about a flywheel axis upon rotation of the cutting tool, wherein the drive train is characterized as including a hydraulic motor, having an output shaft, and a gear reduction box, having an input shaft and wherein the cutting tool is connected to the gear reduction box for rotation in response to a rotation of the input shaft of the gear reduction box, the improvement wherein the flywheel comprises: a hub coupled to the cutting tool; an inertia wheel mounted on the hub for relative rotation of the inertia wheel about the hub; and torque limiting means for clamping the inertia wheel to the hub when a torque exerted between the inertia wheel and the hub is less than a preselected value and for permitting the inertia wheel to slip on the hub when a torque exerted between the inertia wheel and the hub attains the preselected value; and wherein the output shaft of the motor is connected to the input shaft of the gear reduction box via the hub of the flywheel, whereby the flywheel is coupled to the cutting tool via the gear reduction box.
Claim 3
Dependent Claim
265 words
In a construction machine having a rotationally driven cutting tool, a drive train coupled to the cutting tool for rotating the cutting tool, and a flywheel coupled to the cutting tool for rotation about a flywheel axis upon rotation of the cutting tool, wherein the drive train is characterized as comprising a hydraulic motor and means for coupling the hydraulic motor to the cutting tool, the improvement wherein the flywheel comprises: a hub coupled to the cutting tool; an inertia wheel mounted on the hub for relative rotation of the inertia wheel about the hub; and torque limiting means for clamping the inertia wheel to the hub when a torque exerted between the inertia wheel and the hub is less than a preselected value and for permitting the inertia wheel to slip on the hub when a torque exerted between the inertia wheel and the hub attains the preselected value; wherein the machine further comprises means, independent of the means for coupling the hydraulic motor to the cutting tool, for coupling the flywheel to the cutting tool; and wherein the means for coupling the flywheel to the cutting tool comprises: a flywheel gear box having an output shaft, the flywheel gear box connected to the flywheel for rotation of the flywheel in response to a rotation of the output shaft of the flywheel gear box; a flywheel sprocket mounted on the output shaft of the flywheel gear box; a cutting tool sprocket mounted on the cutting tool for rotation with the cutting tool; and a chain connecting the flywheel sprocket to the cutting tool sprocket.
Claim 4
Dependent Claim
265 words
In a construction machine having a rotationally driven cutting tool, a drive train coupled to the cutting tool for rotating the cutting tool, and a flywheel coupled to the cutting tool for rotation about a flywheel axis upon rotation of the cutting tool, wherein the drive train is characterized as comprising a hydraulic motor and means for coupling the hydraulic motor to the cutting tool, the improvement wherein the flywheel comprises: a hub coupled to the cutting tool; an inertia wheel mounted on the hub for relative rotation of the inertia wheel about the hub; and torque limiting means for clamping the inertia wheel to the hub when a torque exerted between the inertia wheel and the hub is less than a preselected value and for permitting the inertia wheel to slip on the hub when a torque exerted between the inertia wheel and the hub attains the preselected value; wherein the machine further comprises means, independent of the means for coupling the hydraulic motor to the cutting tool, for coupling the flywheel to the cutting tool; and wherein the means for coupling the flywheel to the cutting tool comprises: a flywheel gear box having an output shaft, the flywheel gear box connected to the flywheel for rotation of the flywheel in response to a rotation of the output shaft of the flywheel gear box; a flywheel sprocket mounted on the output shaft of the flywheel gear box; a cutting tool sprocket mounted on the cutting tool for rotation with the cutting tool; and a chain connecting the flywheel sprocket to the cutting tool sprocket.
References Cited (Backward Citations)
US1325057A
Cited
US894269A
Cited
US1896914A
Cited
US2062369A
Cited
US2019198A
Cited
US2153914A
Cited
US2817275A
Cited
US3007687A
Cited
US2984091A
Cited
US3207000A
Cited
US3479906A
Cited
US3606468A
Cited
US3895843A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-10-15 | 1983-04-16 | 1983-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-10-15 | 1987-04-16 | 1987-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-10-15 | 1991-04-16 | 1991-10-16 | $7700.00 | Window Closed / Lapsed |