Patent US4458472A successfully refreshed from Google Patents.
Patent US4932192A successfully refreshed from Google Patents.
US4932192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Operation device of walker operated mower
Assignee: Iseki & Co Ltd
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Filing: 1989-06-19
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Granted: 1990-06-12
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Expires: 2009-06-19
Abstract
Abstract An operation device of a walker operated mower is disclosed. When a mowing lever is set to the "connection" side to start a mowing member and a little bit later, when a running operation lever is set to the "connection" side substantially simultaneously while keeping the lever position, a support member which is integral with the running operation lever pushes the back of an engagement member and a rocking tip of the engagement member strikes a projection provided to the mowing operation lever and prevents the return of the mowing operation lever while keeping contact with the projection. Accordingly, even if the mowing operation member is kept in the "connection" position, the moving operation lever retain the "connection" state. Therefore, the running operation lever can be kept in the "connection" position by one of the hands and the other portions can be operated freely by the other hand.
Inventors
- 👤 Takeshi Ishimaru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:12
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/67; A01D34/68; A01D34/6806; A01D34/82; A01D34/824; B; B62; B62D; B62D51/00; B62D51/001; G; G05; G05G; G05G5/00; G05G5/005; A01D2034/6843; A01D2101/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
266 words
An operation device of a walker operated mower comprising: a handle grip (29), support frames (2, 2) disposed on opposite sides of said handle grip (29), a running operation lever (4) having opposed shaft ends (5, 5) rotatably mounted between said support frames (2, 2), whereby said running operation lever is rotatably mounted between an operative and inoperative position, a mowing operation lever (7) rotatably journeled on said shaft end (5, 5) for independent rotation relative to said running operation lever (4) between an operative and inoperative position, means for interlocking said running operation lever (4) and said mowing operation lever in the operative position thereof, said interlocking means including a projection (8) extending lateral of said mower operation lever (7) at one end thereof, and a resilient engagement member (10) such as a leaf spring connected to said support frame (2) adjacent said projection (8), a support member (11) connected to said running operation lever (4) for camming said engagement member (10) toward and away from said projection (8) as said running operation lever (4) is rotated between operative and inoperative position, whereby in the operative position of said running operational lever (4) and said mower operational lever (7), said support member (11) cams said engagement member (10) toward said projection (8) to anchor said projection and maintain said mowing operation lever (7) in the operative position thereof; and in the inoperative position of said running operation lever (4), said support member (11) disengages from said projection (8) to free the rotation of said mowing operation lever (7) relative to said running operation lever (4).
Claim 2
Dependent Claim
266 words
An operation device of a walker operated mower comprising: a handle grip (29), support frames (2, 2) disposed on opposite sides of said handle grip (29), a running operation lever (4) having opposed shaft ends (5, 5) rotatably mounted between said support frames (2, 2), whereby said running operation lever is rotatably mounted between an operative and inoperative position, a mowing operation lever (7) rotatably journeled on said shaft end (5, 5) for independent rotation relative to said running operation lever (4) between an operative and inoperative position, means for interlocking said running operation lever (4) and said mowing operation lever in the operative position thereof, said interlocking means including a projection (8) extending lateral of said mower operation lever (7) at one end thereof, and a resilient engagement member (10) such as a leaf spring connected to said support frame (2) adjacent said projection (8), a support member (11) connected to said running operation lever (4) for camming said engagement member (10) toward and away from said projection (8) as said running operation lever (4) is rotated between operative and inoperative position, whereby in the operative position of said running operational lever (4) and said mower operational lever (7), said support member (11) cams said engagement member (10) toward said projection (8) to anchor said projection and maintain said mowing operation lever (7) in the operative position thereof; and in the inoperative position of said running operation lever (4), said support member (11) disengages from said projection (8) to free the rotation of said mowing operation lever (7) relative to said running operation lever (4).
Claim 3
Dependent Claim
149 words
An operational device for a power walker operated mower including a cover mounted on wheels, a rotary cutting blade, and a power means including independently actuated clutch means for independently engaging said cutting blade and said wheels in driving relationship to said power means, the improvement of a handle means having a handle grip, support frames disposed at opposite sides of said handle grip, a running operation lever having opposed shaft ends rotatably mounted between said support frames between an operative driving and inoperative non-driving position, a mowing operation lever rotatably mounted on said shaft ends for rotation relative to said running operation lever between an operative mowing and inoperative non-mowing position, and anchoring means for interlocking said running operation lever and said mowing operation lever in their respective operative driving and mowing position whereby said lever can be maintained in the respective operative positions thereof by one hand.
Claim 4
Dependent Claim
149 words
An operational device for a power walker operated mower including a cover mounted on wheels, a rotary cutting blade, and a power means including independently actuated clutch means for independently engaging said cutting blade and said wheels in driving relationship to said power means, the improvement of a handle means having a handle grip, support frames disposed at opposite sides of said handle grip, a running operation lever having opposed shaft ends rotatably mounted between said support frames between an operative driving and inoperative non-driving position, a mowing operation lever rotatably mounted on said shaft ends for rotation relative to said running operation lever between an operative mowing and inoperative non-mowing position, and anchoring means for interlocking said running operation lever and said mowing operation lever in their respective operative driving and mowing position whereby said lever can be maintained in the respective operative positions thereof by one hand.
Claim 5
Dependent Claim
64 words
An operation device as defined in claim 2, wherein said anchoring means comprises a resilient engaging member connected to said support frame, projecting means on said mowing operation lever to be engaged by said engaging member, and means on said running operation lever for biasing said engaging member toward said projecting means as said running operation lever is rotated in the operative position thereof.
Claim 6
Dependent Claim
33 words
An operation device as defined in claim 3, wherein said resilient engaging member includes opposed bent surfaces, said bent surfaces having an inclined notch at the upper portion of the respective bent surfaces.
Claim 7
Dependent Claim
24 words
An operation device as defined in claim 4, wherein said bent surfaces includes an inclined notch at the lower portion of said bent surfaces.
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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) | 1993-06-11 | 1993-12-11 | 1994-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-11 | 1997-12-11 | 1998-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-11 | 2001-12-11 | 2002-06-12 | $7700.00 | Window Closed / Lapsed |