Patent US4882896A successfully refreshed from Google Patents.
US4882896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lawn mower
Assignee: Individual
•
Filing: 1988-04-11
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Granted: 1989-11-28
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Expires: 2008-04-11
Abstract
Abstract A lawn mower having a housing with a top, a bottom and a cutting chamber which is open to the bottom. A plurality of wheels are rotatably mounted to the housing and support the housing upon a ground surface while a push bar extends upwardly and outwardly from the housing to enable the housing to be maneuvered by a person utilizing the lawn mower. An electric motor has an output shaft and a long cutting element is secured to the output shaft. The electric motor is detachably secured to the housing so that, upon attachment, the cutting element is positioned within the cutting chamber of the lawn mower. An electric rechargeable battery is also attached to the motor.
Inventors
- 👤 Roy E. Wilcox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:44
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/76; A01D34/78; A01D69/00; A01D69/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A lawn mowing device comprising a housing having a top, a bottom, and a cutting chamber open to said bottom, a plurality of wheels rotatably mounted to said housing for supporting said housing on a ground surface, an electric motor having an output shaft, an electric battery mounted to said electric motor and means for electrically connecting said battery to said motor, a lawn cutting element secured to said output shaft, means for detachably securing said motor to said housing so that said cutting element is positioned in said cutting chamber and a battery charger mounted to said motor having means for electrically connecting said battery charger to household current, said battery charger being electrically connectable to household current when said motor is detached from said housing.
Claim 2
Dependent Claim
127 words
A lawn mowing device comprising a housing having a top, a bottom, and a cutting chamber open to said bottom, a plurality of wheels rotatably mounted to said housing for supporting said housing on a ground surface, an electric motor having an output shaft, an electric battery mounted to said electric motor and means for electrically connecting said battery to said motor, a lawn cutting element secured to said output shaft, means for detachably securing said motor to said housing so that said cutting element is positioned in said cutting chamber and a battery charger mounted to said motor having means for electrically connecting said battery charger to household current, said battery charger being electrically connectable to household current when said motor is detached from said housing.
Claim 3
Dependent Claim
14 words
The invention as defined in claim 1 wherein said cutting element comprises a strand.
Claim 4
Dependent Claim
23 words
The invention as defined in claim 2 and comprising a cutting blade secured to said housing for limiting the length of said strand.
Claim 5
Dependent Claim
18 words
The invention as defined in claim 1 wherein said cutting element comprises a blade made of flexible material.
Claim 6
Dependent Claim
130 words
A lawn mowing device comprising a housing having a top, a bottom, and a cutting chamber open to said bottom, a plurality of wheels rotatably mounted to said housing for supporting said housing on a ground surface, an electric motor having an output shaft, an electric battery and means for electrically connecting said battery to said motor, a lawn cutting element secured to said output shaft, means for detachably securing said motor to said housing so that said cutting element is positioned in said cutting chamber, a push bar mounted to said housing, a switch mounted to said push bar, and wherein said electrical connecting means having means for automatically electrically connecting said switch in series between said motor and said battery upon attachment of said motor to said housing.
Claim 7
Dependent Claim
130 words
A lawn mowing device comprising a housing having a top, a bottom, and a cutting chamber open to said bottom, a plurality of wheels rotatably mounted to said housing for supporting said housing on a ground surface, an electric motor having an output shaft, an electric battery and means for electrically connecting said battery to said motor, a lawn cutting element secured to said output shaft, means for detachably securing said motor to said housing so that said cutting element is positioned in said cutting chamber, a push bar mounted to said housing, a switch mounted to said push bar, and wherein said electrical connecting means having means for automatically electrically connecting said switch in series between said motor and said battery upon attachment of said motor to said housing.
Claim 8
Dependent Claim
32 words
The invention as defined in claim 5 wherein said automatic electrical connection means comprises a pair of terminal strips on said housing and a pair of cooperating terminal strips on said motor.
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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) | 1992-11-27 | 1993-05-29 | 1993-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-27 | 1997-05-29 | 1997-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-27 | 2001-05-29 | 2001-11-28 | $7700.00 | Window Closed / Lapsed |