Patent US3864373A successfully refreshed from Google Patents.
US5265341A
Expired / Lapsed
US
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Battery powered line trimmer arm rest
Assignee: MTD Southwest Inc
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Filing: 1993-01-29
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Granted: 1993-11-30
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Expires: 2013-01-29
Abstract
Abstract A battery powered line trimmer having a forward and rearward handle attached thereto, and further having an arm cradle atop the battery casing allowing the operator to rest his forearm upon it during operation. The arm cradle allowing the operator to maintain control of and maneuver the line trimmer by using the rear handle and arm cradle should the need arise for him to release his grip of the forward handle while cutting vegetation. The line trimmer further has a relatively high ratio of mass movement of inertia about a vertical axis extending through the center of gravity to mass of the line trimmer.
Inventors
- 👤 Naoki Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:28
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/835; A01D34/90; A01D34/902
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
199 words
A battery powered line trimmer for cutting vegetation, the trimmer comprising: an elongated shaft which when the trimmer is in an operative position has a lower forward end, a raised rearward end, and an inclined central region therebetween; an electric motor cutting head assembly having a rotating cutting line, the electric motor cutting head assembly mounted to the forward end of the elongated shaft; a battery casing mounted on and generally aligned with the rearward end of the elongated shaft; a front handle cooperating with the elongated shaft central region having a front grip for one hand of an operator, located rearward of the cutting head, forward of the battery casing, and spaced above the elongated shaft; a rear handle cooperating with the elongated shaft having a rear grip for the other hand of the operator, the rear handle located adjacent to and forward of the battery casing; and an arm cradle formed in the uppermost side of the battery casing providing a generally concave cylindrical recess so as to allow the operator's forearm, associated with the hand gripping the rear handle, to rest on the arm cradle during one-handed usage to minimize the stress on the operator's wrist.
Claim 2
Dependent Claim
199 words
A battery powered line trimmer for cutting vegetation, the trimmer comprising: an elongated shaft which when the trimmer is in an operative position has a lower forward end, a raised rearward end, and an inclined central region therebetween; an electric motor cutting head assembly having a rotating cutting line, the electric motor cutting head assembly mounted to the forward end of the elongated shaft; a battery casing mounted on and generally aligned with the rearward end of the elongated shaft; a front handle cooperating with the elongated shaft central region having a front grip for one hand of an operator, located rearward of the cutting head, forward of the battery casing, and spaced above the elongated shaft; a rear handle cooperating with the elongated shaft having a rear grip for the other hand of the operator, the rear handle located adjacent to and forward of the battery casing; and an arm cradle formed in the uppermost side of the battery casing providing a generally concave cylindrical recess so as to allow the operator's forearm, associated with the hand gripping the rear handle, to rest on the arm cradle during one-handed usage to minimize the stress on the operator's wrist.
Claim 3
Dependent Claim
35 words
The battery powered line trimmer of claim 1 wherein the arm cradle has means for removably attaching the arm cradle to the uppermost side of the battery casing to allow access into the battery casing.
Claim 4
Dependent Claim
226 words
A battery powered line trimmer for cutting vegetation, the trimmer comprising: an elongated shaft which when the trimmer is in an operative position has a lower forward end, a raised rearward end and an inclined central region therebetween; an electric motor cutting head assembly having a rotating cutting line, the electric motor cutting head assembly mounted to the forward end of the elongated shaft; a battery casing mounted on and generally aligned with the rearward end of the elongated shaft; a front handle cooperative with the elongated shaft central region having a front grip for one hand of an operator, located rearward of the cutting head, forward of the battery casing and spaced above the elongated shaft; a rear handle cooperative with the elongated shaft having a rear grip for the other hand of the operator, the rear handle located adjacent to and forward of the battery casing; and an arm cradle formed in the uppermost side of the battery casing providing a generally concave cylindrical recess so as to allow the operator's forearm, associated with the hand griping the rear handle, to rest on the arm cradle during one handed usage to minimize the stress on the operator's wrist, the arm cradle having means for removably attaching the arm cradle to the uppermost side of the battery casing to allow access into the battery casing.
Claim 5
Dependent Claim
226 words
A battery powered line trimmer for cutting vegetation, the trimmer comprising: an elongated shaft which when the trimmer is in an operative position has a lower forward end, a raised rearward end and an inclined central region therebetween; an electric motor cutting head assembly having a rotating cutting line, the electric motor cutting head assembly mounted to the forward end of the elongated shaft; a battery casing mounted on and generally aligned with the rearward end of the elongated shaft; a front handle cooperative with the elongated shaft central region having a front grip for one hand of an operator, located rearward of the cutting head, forward of the battery casing and spaced above the elongated shaft; a rear handle cooperative with the elongated shaft having a rear grip for the other hand of the operator, the rear handle located adjacent to and forward of the battery casing; and an arm cradle formed in the uppermost side of the battery casing providing a generally concave cylindrical recess so as to allow the operator's forearm, associated with the hand griping the rear handle, to rest on the arm cradle during one handed usage to minimize the stress on the operator's wrist, the arm cradle having means for removably attaching the arm cradle to the uppermost side of the battery casing to allow access into the battery casing.
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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) | 1996-11-29 | 1997-05-31 | 1997-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-11-29 | 2001-05-31 | 2001-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-11-29 | 2005-05-31 | 2005-11-30 | $7700.00 | Window Closed / Lapsed |