US3897678A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self actuating mechanism for braking a driven member upon discontinuation of drive thereto
Assignee: International Motors LLC
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Filing: 1972-10-10
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Granted: 1975-08-05
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Expires: 1992-10-10
Abstract
Abstract A mechanism adaptable for connection between a drive and rotatable shaft to provide a driving connection therebetween when mechanical power flows from the drive to the shaft, the mechanism being operable to produce a self-actuating braking force on the shaft when the power flow is interrupted thereby preventing extended free-wheeling of the shaft.
Inventors
- 👤 James W Zurek
- 👤 David A Fulghum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 10:31
CPC Classifications
F; F16; F16D; F16D59/00; F16D67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
In a rotary mower belt driven from a source of power, a housing for said mower, a spindle rotatably mounted in said housing, a cutting blade attached to the lower end of said spindle for rotation therewith, a sheave mounted on the upper end of said spindle for driving said spindle, said sheave being drivenly connected to said source of power, said sheave having a screw connection to said spindle, a stationary member carried by said housing adjacent to said sheave, said sheave having a lower surface frictionally engaging said stationary member as a result of said source of power being interrupted from said sheave and said sheave being screwed down into braking relation with said staTionary member as a result of the inertia of rotation of said blade.
Claim 2
Dependent Claim
129 words
In a rotary mower belt driven from a source of power, a housing for said mower, a spindle rotatably mounted in said housing, a cutting blade attached to the lower end of said spindle for rotation therewith, a sheave mounted on the upper end of said spindle for driving said spindle, said sheave being drivenly connected to said source of power, said sheave having a screw connection to said spindle, a stationary member carried by said housing adjacent to said sheave, said sheave having a lower surface frictionally engaging said stationary member as a result of said source of power being interrupted from said sheave and said sheave being screwed down into braking relation with said staTionary member as a result of the inertia of rotation of said blade.
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) | 1978-08-04 | 1979-02-03 | 1979-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-04 | 1983-02-03 | 1983-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-04 | 1987-02-03 | 1987-08-05 | $7700.00 | Window Closed / Lapsed |