US3580194A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leaf burner attachment for lawn mowers
Assignee: Individual
•
Filing: 1969-11-13
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Granted: 1971-05-25
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Expires: 1989-11-13
Abstract
Abstract A leaf burner attachment for lawn mowers includes a cylindrical combustion chamber with a centrally disposed vertically standing perforated vent stack which extends from a bottom portion of the cylindrical combustion chamber and through a top portion thereof, leaves and air are introduced at one side of the cylindrical combustion chamber near the bottom thereof through an opening which communicates with a duct positioned on a tangent with respect to the wall of the cylindrical combustion chamber so that air and leaves introduced into the cylindrical combustion chamber will spin centrifugally therein and around the centrally disposed perforated vent stack.
Inventors
- 👤 Harold Withers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:42
CPC Classifications
A; A01; A01D; A01D43/00; A01D43/003; F; F23; F23G; F23G7/00; F23G7/10
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
137 words
A leaf burner attachment for rotary lawn mowers and the like and consisting of a cylindrical combustion chamber having a closed bottom and a top portion having a vent stack communicating with a central opening therein, a perforated cylindrical member positioned in said cylindrical combustion chamber centrally thereof and communicating at its upper end with said vent stack, means for introducing leaves and trash into the combustion chamber and consisting of an opening in the side thereof, a duct communicating with said opening and arranged on a tangent with respect to said cylindrical combustion chamber, said duct forming a means of communication with said rotary lawnmower so that leaves and air picked up and moved by the rotary lawnmower will enter the combustion chamber therethrough and spin centrifugally around the perforated cylindrical member in the center thereof.
Claim 2
Dependent Claim
137 words
A leaf burner attachment for rotary lawn mowers and the like and consisting of a cylindrical combustion chamber having a closed bottom and a top portion having a vent stack communicating with a central opening therein, a perforated cylindrical member positioned in said cylindrical combustion chamber centrally thereof and communicating at its upper end with said vent stack, means for introducing leaves and trash into the combustion chamber and consisting of an opening in the side thereof, a duct communicating with said opening and arranged on a tangent with respect to said cylindrical combustion chamber, said duct forming a means of communication with said rotary lawnmower so that leaves and air picked up and moved by the rotary lawnmower will enter the combustion chamber therethrough and spin centrifugally around the perforated cylindrical member in the center thereof.
Claim 3
Dependent Claim
23 words
The leaf burner set forth in claim 1 and wherein said leaf burner is partially carried on said lawnmower and a ground-engaging wheel.
Claim 4
Dependent Claim
26 words
The leaf burner set forth in claim 1 and wherein said vent stack extends from said central opening in said top portion to one side thereof.
Claim 5
Dependent Claim
27 words
The leaf burner set forth in claim 1 and wherein said top portion has a second opening therein and a lid for normally closing said second opening.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |