US3753338A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powered grass raking device
Assignee: Individual
•
Filing: 1969-12-18
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Granted: 1973-08-21
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Expires: 1989-12-18
Abstract
Abstract An attachment for use with a household-type rotary power lawn mower having a vertical spindle. A bar is horizontally mounted on the spindle. One or two coil spring tines are mounted on the bar at each end. The tooth of each tine extends downwardly so that its tip is at ground surface. The high speed rotation of the tines over the ground along with the movement of the machine along the ground results in the tines scrubbing dead grass out of a lawn without otherwise seriously damaging the live grass.
Inventors
- 👤 J Sherratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:18
CPC Classifications
A; A01; A01D; A01D42/00; A01D42/02; A01D2101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
A raking attachment for use with a household-type, rotary power lawn mower having a rotatable vertical spindle which comprises: a horizontal support member adapted to be mounted on the spindle of the mower for rotation thereby; up tO two resilient raking teeth mounted in balanced arrangement on each end of the support member, each said raking tooth including a coil member and an integral, downwardly depending substantially straight tooth member; and wherein the support member is provided with at least two slots having shoulders with a slot being located adjacent each end of the support in symmetrical relation with said coil members being horizontally disposed in said slots such that the shoulders of the slots prevent axial elongation of the coil members.
Claim 2
Dependent Claim
122 words
A raking attachment for use with a household-type, rotary power lawn mower having a rotatable vertical spindle which comprises: a horizontal support member adapted to be mounted on the spindle of the mower for rotation thereby; up tO two resilient raking teeth mounted in balanced arrangement on each end of the support member, each said raking tooth including a coil member and an integral, downwardly depending substantially straight tooth member; and wherein the support member is provided with at least two slots having shoulders with a slot being located adjacent each end of the support in symmetrical relation with said coil members being horizontally disposed in said slots such that the shoulders of the slots prevent axial elongation of the coil members.
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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |