Patent US3706189A successfully refreshed from Google Patents.
US3706189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety mower and leaf harvester-mulcher
Assignee: Individual
•
Filing: 1972-02-04
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Granted: 1972-12-19
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Expires: 1992-02-04
Abstract
Abstract A combined rotary mower and leaf harvester and mulcher having a special 180* baffle fixed circumferentially around the blade axis to direct airflow for mulching and a deflector plate for upward discharge through a gooseneck chute which exhausts downwardly into a deck-mounted porous collector; co-acting safety features include an unbroken 360* guard skirt in the plane of the blade and a lower plate concealing the tips of the blade except at flange-protected lateral slots which allow full-width cut; height control is adjustable and the front can be raised independently of the rear for leaf cutting by the height control mechanism; a safety adapter for non-collecting mowing is also provided.
Inventors
- 👤 Harry T Rutherford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:45
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/001; A01D34/005; A01D43/00; A01D43/08; A01D51/00; A01D2101/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
In a combination lawnmower and leaf harvester-mulcher having a blade-housing comprising a deck and a skirt depending from the deck, a blade adapted to rotate within the housing about a vertical axis, a motor adapted to rotate the blade, wheels supporting the housing, and a handle attached to the housing, the improvement comprising: the skirt being continuous around the blade, the deck having an upward facing exhaust aperture at a peripheral portion thereof, an upward deflector plate fixed at an angle above the blade at the exhaust aperture, an exhaust chute fixed above the exhaust aperture, and folding handle structure including a laterally sliding attachment to the deck, means for pivoting the handle forward outboard of the motor, and means for preventing the handle from sliding laterally.
Claim 2
Dependent Claim
127 words
In a combination lawnmower and leaf harvester-mulcher having a blade-housing comprising a deck and a skirt depending from the deck, a blade adapted to rotate within the housing about a vertical axis, a motor adapted to rotate the blade, wheels supporting the housing, and a handle attached to the housing, the improvement comprising: the skirt being continuous around the blade, the deck having an upward facing exhaust aperture at a peripheral portion thereof, an upward deflector plate fixed at an angle above the blade at the exhaust aperture, an exhaust chute fixed above the exhaust aperture, and folding handle structure including a laterally sliding attachment to the deck, means for pivoting the handle forward outboard of the motor, and means for preventing the handle from sliding laterally.
Claim 3
Dependent Claim
36 words
A device as recited in claim 1, wherein the laterally sliding attachment and the means for pivoting the handle forward comprise a tubular end of the handle engaging a laterally extended way fixed to the housing.
Claim 4
Dependent Claim
34 words
A device as recited in claim 2, wherein the means for preventing the handle from sliding laterally comprises a fork fixed to the housing and extending upward to engage the shank of the handle.
Claim 5
Dependent Claim
14 words
A device as recited in claim 3, wherein the handle has telescoping shank portions.
Claim 6
Dependent Claim
131 words
In a combination lawnmower and leaf harvester-mulcher having a blade-housing comprising a deck and a skirt depending from the deck, a blade adapted to rotate within the housing about a vertical axis, a motor adapted to rotate the blade, wheels supporting the housing, and a handle attached to the housing, the improvement comprising: the skirt being continuous around the blade, the deck having an upward facing exhaust aperture at a peripheral portion thereof, an upward deflector plate fixed at an angle above the blade at the exhaust aperture, an exhaust chute fixed above the exhaust aperture, and the wheel support of the housing having means for adjusting the height of the housing including means for tilting the forward end of the housing upward for leaf harvesting, weed cutting and the like.
Claim 7
Dependent Claim
131 words
In a combination lawnmower and leaf harvester-mulcher having a blade-housing comprising a deck and a skirt depending from the deck, a blade adapted to rotate within the housing about a vertical axis, a motor adapted to rotate the blade, wheels supporting the housing, and a handle attached to the housing, the improvement comprising: the skirt being continuous around the blade, the deck having an upward facing exhaust aperture at a peripheral portion thereof, an upward deflector plate fixed at an angle above the blade at the exhaust aperture, an exhaust chute fixed above the exhaust aperture, and the wheel support of the housing having means for adjusting the height of the housing including means for tilting the forward end of the housing upward for leaf harvesting, weed cutting and the like.
Claim 8
Dependent Claim
83 words
A device as recited in claim 5, wherein housing height adjustment means and the housing tilt means comprises a front axle, a rear axle, link attachment of the wheels to the axles, a tie bar connecting a front wheel link with a rear wheel link, handle and adjustable stop means for simultaneously setting the angular positions of the links with respect to the axles and an alternate-position connections for varying the effective length of the tie bar connection and thereby tilting The housing.
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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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |