US4987729A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solar powered mower
Assignee: NBD Bank
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Filing: 1990-04-10
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Granted: 1991-01-29
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Expires: 2010-04-10
Abstract
Abstract A powered mower has a cordless electric power source defined by a rechargeable battery and a solar panel. The rechargeable battery is connected to a direct current motor for driving the mower blade and drive system for the powered mower. The solar panel supplies the rechargeable battery with additional voltage and current to assist the battery in maintaining its functional operating level.
Inventors
- 👤 Anthony R. Paytas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:50
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/76; A01D34/78; A01D69/00; A01D69/02; F; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; Y; Y10; Y10S; Y10S136/00; Y10S136/291
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
189 words
A mower for cutting grass including a protective housing for enclosing the plane of rotation of a rotary blade arranged to cut grass blades located below the protective housing and the blade being rotated by a motor on the top of the protective housing and a drive system for connecting the motor in driving relationship with the blade characterized by: said motor comprising an electric drive motor; means defining a cordless power supply for said electric drive motor located on the upper surface of said protective housing; said cordless power supply including a primary source of electrical power for driving said motor and a second source of electrical power for charging the primary source of electrical power as power is supplied from said primary source of electrical power to said electric drive motor for operating said rotary blade; said secondary source of power including a pair of solar panels joined at the ends thereof at a ridge line located above said electric drive motor; each of said solar panels being inclined downward from said apex to capture sun rays from a plurality of directions during operation of the mower.
Claim 2
Dependent Claim
189 words
A mower for cutting grass including a protective housing for enclosing the plane of rotation of a rotary blade arranged to cut grass blades located below the protective housing and the blade being rotated by a motor on the top of the protective housing and a drive system for connecting the motor in driving relationship with the blade characterized by: said motor comprising an electric drive motor; means defining a cordless power supply for said electric drive motor located on the upper surface of said protective housing; said cordless power supply including a primary source of electrical power for driving said motor and a second source of electrical power for charging the primary source of electrical power as power is supplied from said primary source of electrical power to said electric drive motor for operating said rotary blade; said secondary source of power including a pair of solar panels joined at the ends thereof at a ridge line located above said electric drive motor; each of said solar panels being inclined downward from said apex to capture sun rays from a plurality of directions during operation of the mower.
Claim 3
Dependent Claim
19 words
The mower assembly of claim 1, further characterized by said primary source of electrical power comprising rechargeable battery means.
Claim 4
Dependent Claim
177 words
A mower for cutting grass including a protective housing for enclosing the plane of rotation of a rotary blade arranged to cut grass blades located below the protective housing and the blade being rotated by a motor on the top of the protective housing and a drive system for connecting the motor in driving relationship with the blade characterized by: said motor comprising an electric drive motor; means defining a cordless power supply for said electric drive motor located on the upper surface of said protective housing; said cordless power supply including a primary source of electrical power for driving said motor and a secondary source of electrical power for charging the primary source of electrical power as power is supplied from said primary source of electrical power to said electric drive motor for operating said rotary blade; said secondary source of power including a conically configured solar panel having an apex located above said electric drive motor and including a maximum diameter substantially equal to the diameter of the mower blade shielded by the protective housing.
Claim 5
Dependent Claim
177 words
A mower for cutting grass including a protective housing for enclosing the plane of rotation of a rotary blade arranged to cut grass blades located below the protective housing and the blade being rotated by a motor on the top of the protective housing and a drive system for connecting the motor in driving relationship with the blade characterized by: said motor comprising an electric drive motor; means defining a cordless power supply for said electric drive motor located on the upper surface of said protective housing; said cordless power supply including a primary source of electrical power for driving said motor and a secondary source of electrical power for charging the primary source of electrical power as power is supplied from said primary source of electrical power to said electric drive motor for operating said rotary blade; said secondary source of power including a conically configured solar panel having an apex located above said electric drive motor and including a maximum diameter substantially equal to the diameter of the mower blade shielded by the protective housing.
Claim 6
Dependent Claim
19 words
The mower assembly of claim 3, further characterized by said primary source of electrical power comprising rechargeable battery 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) | 1994-01-28 | 1994-07-30 | 1995-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-01-28 | 1998-07-30 | 1999-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-01-28 | 2002-07-30 | 2003-01-29 | $7700.00 | Window Closed / Lapsed |