Patent US3890772A successfully refreshed from Google Patents.
US3890772A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-propelled lawn mower
Assignee: Individual
•
Filing: 1974-02-01
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Granted: 1975-06-24
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Expires: 1994-02-01
Abstract
Abstract A self-propelled rotary lawn mower. The drive shaft of the engine is operably connected through a clutch mechanism to the cutting blade and to a belt drive connected the front wheels to drive the mower across the terrain. By disengaging the clutch through manual action of a cable, the driving connection to both the blade and the wheels is stopped, so that the blade will not rotate when the mower is stationary. The housing of the mower includes inner and outer housing sections with the space between the housing sections defining a chamber. The exhaust gases from the engine are directed into the chamber and are discharged from the chamber adjacent the grass discharge outlet in the housing. Directing the exhaust gases through the internal housing chamber substantiallly decreases the noise level of the mower. The four wheels of the mower are adapted to be raised and lowered in unison by single lever control to thereby vary the height of the blade above the ground. A handle assembly is utilized which is adapted to fold for storage so that the entire handle is located within the perimeter of the housing to facilitate handling and shipment of the mower.
Inventors
- 👤 Lester H Seifert
- 👤 Raymond P Powers
- 👤 William M Schmidt
- 👤 Stanley E Thorwaldsen
- 👤 Frederick Smith
- 👤 David C Mcelroy
- 👤 Roy P Dunton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:37
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D2101/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
197 words
A grass catching attachment for connection to a rotary lawn mower, said lawn mower including a housing having a discharge outlet, power means mounted on the housing, and rotary cutting means disposed within the housing and operably connected to said power means, said mower also including handle means attached to the housing, said attachment comprising chute means removably connected with the hoUsing and having one end communicating with said discharge outlet, the opposite end of said chute means defining an outlet opening, means connected to said opposite end of the chute means and defining a second opening located adjacent said outlet opening, an impervious throw-away bag having a neck bordering an open end thereof, means for removably securing the neck of the bag around said outlet opening and around said second opening, whereby grass clippings being discharged from the housing pass through the chute means and through said outlet opening into the bag and air is discharged from the bag through said second opening to the exterior, flexible protective support means carried by the mower for supporting the throw-away bag, and connecting means for removably attaching a portion of said protective support means to said chute means.
Claim 2
Dependent Claim
197 words
A grass catching attachment for connection to a rotary lawn mower, said lawn mower including a housing having a discharge outlet, power means mounted on the housing, and rotary cutting means disposed within the housing and operably connected to said power means, said mower also including handle means attached to the housing, said attachment comprising chute means removably connected with the hoUsing and having one end communicating with said discharge outlet, the opposite end of said chute means defining an outlet opening, means connected to said opposite end of the chute means and defining a second opening located adjacent said outlet opening, an impervious throw-away bag having a neck bordering an open end thereof, means for removably securing the neck of the bag around said outlet opening and around said second opening, whereby grass clippings being discharged from the housing pass through the chute means and through said outlet opening into the bag and air is discharged from the bag through said second opening to the exterior, flexible protective support means carried by the mower for supporting the throw-away bag, and connecting means for removably attaching a portion of said protective support means to said chute means.
Claim 3
Dependent Claim
54 words
The structure of claim 1, in which said protective support means constitutes a sling having a closed bottom portion and an open upper portion, one end of said sling being removably attached to said chute means adjacent said outlet opening and the opposite end of said sling being removably connected to said handle means.
Claim 4
Dependent Claim
60 words
The attachment of claim 1, wherein said protective support means comprises an outer closed bag disposed around said throw-away bag, the outer bag including an opening in the upper surface thereof, and a releasable closure for closing said opening in the outer bag to permit removal and installation of the throw-away bag when the closure is in the released position.
Claim 5
Dependent Claim
21 words
The attachment of claim 1, and including means slidably attaching said first named end of said chute means to said housing.
Claim 6
Dependent Claim
40 words
The attachment of claim 1, wherein said means defining a second opening comprises a frame attached to said chute means, said frame defining a second opening located above and to the side of the outlet opening in the chute means.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |