US3729912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Snap on shroud mounting
Assignee: Black and Decker Corp
•
Filing: 1970-09-14
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Granted: 1973-05-01
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Expires: 1990-09-14
Abstract
Abstract A lawnmower including a frame supported for movement over the ground by ground engaging wheels. A rotatable reel is mounted on the frame and cooperates with a bed knife. The reel is driven by a D.C. motor powered by a storage battery, both of which are disposed on the frame and covered by a shroud attached to the frame. The shroud serves to protect the motor and battery and is readily detachable from the frame for servicing of the motor and/or battery.
Inventors
- 👤 E Weber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:14
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/42; A01D34/62; A01D34/56; A01D34/58
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
97 words
An electric lawnmower construction comprising a frame supported for movement over the ground by wheels, cutting blade means rotatably supported upon said frame and having an output shaft operatively interconnected with said blade means, a storage battery supported atop said frame and interconnected with said motor, a shroud enveloping said battery, cooperable detent means on said frame and said shroud and forming the sole means holding said shroud on said frame, said detent means being releasable by manually grasping and pulling said shroud away from said frame, said shroud being wholly detachable and removable from said frame.
Claim 2
Dependent Claim
97 words
An electric lawnmower construction comprising a frame supported for movement over the ground by wheels, cutting blade means rotatably supported upon said frame and having an output shaft operatively interconnected with said blade means, a storage battery supported atop said frame and interconnected with said motor, a shroud enveloping said battery, cooperable detent means on said frame and said shroud and forming the sole means holding said shroud on said frame, said detent means being releasable by manually grasping and pulling said shroud away from said frame, said shroud being wholly detachable and removable from said frame.
Claim 3
Dependent Claim
49 words
A construction as defined in claim 1 wherein said detent means includes means adjacent the forward and rearward end of said shroud in the direction of mower travel, said detent means being flexible in the direction of mower travel, for releasing upon collision of said shroud with an obstacle.
Claim 4
Dependent Claim
28 words
A construction as defined in claim 1 wherein said detent means is constructed to guide its components into cooperative engagement when said shroud is pushed toward said frame.
Claim 5
Dependent Claim
127 words
In a lawnmower of the type including a frame supported for movement over the ground, cutting means rotatably supported upon said frame, a D. C. motor supported upon said frame and adapted to drive said cutting means, a storage battery supported atop said frame and electrically connected to said motor; the improvement which comprises a shroud encasing said battery and extending forwardly of said frame, means connecting said shroud to said frame, said connecting means being flexible and allowing said shroud to move longitudinally relative to said frame in the direction of travel of said mower when said shroud encounters an obstacle, said connecting means constituting the sole connecting means for said shroud to said frame and releasing when said shroud moves significantly relative to said frame.
Claim 6
Dependent Claim
127 words
In a lawnmower of the type including a frame supported for movement over the ground, cutting means rotatably supported upon said frame, a D. C. motor supported upon said frame and adapted to drive said cutting means, a storage battery supported atop said frame and electrically connected to said motor; the improvement which comprises a shroud encasing said battery and extending forwardly of said frame, means connecting said shroud to said frame, said connecting means being flexible and allowing said shroud to move longitudinally relative to said frame in the direction of travel of said mower when said shroud encounters an obstacle, said connecting means constituting the sole connecting means for said shroud to said frame and releasing when said shroud moves significantly relative to said frame.
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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) | 1976-04-30 | 1976-10-30 | 1977-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-30 | 1980-10-30 | 1981-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-30 | 1984-10-30 | 1985-05-01 | $7700.00 | Window Closed / Lapsed |