Patent US4503958A successfully refreshed from Google Patents.
US4503958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control lever assembly for lawn mowers
Assignee: Starting Industrial Co Ltd
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Filing: 1982-09-27
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Granted: 1985-03-12
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Expires: 2002-09-27
Abstract
Abstract A control lever assembly for a lawn mower has a main lever and an auxiliary lever pivotably mounted on lawn mower handle. The main lever is operatively connected through spring biased wire to tend to open a clutch and apply a brake for a rotary cutter of the lawn mower. The auxiliary lever when manually held against the mower handle pushes a resilient arm on the main lever out of engagement with a first stop on the body, thereby automatically causing the main lever to connect the clutch and disengage the brake. A spring biased second movable stop on the auxiliary lever is received in a recess in the main lever to detent the main lever in the locked position for operation of the mower. When the auxiliary lever is released manually by the operator, the second movable stop carried thereby is retracted out of the recess on the main lever to automatically return the wire to disconnect the clutch and engage the brake.
Inventors
- 👤 Tadashi Nishio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:31
CPC Classifications
A; A01; A01D; A01D34/00; A01D34/01; A01D34/412; A01D34/63; A01D34/67; A01D34/68; A01D34/6806; A01D2034/6843; A01D2101/00; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20012; Y10T74/20018; Y10T74/2014; Y10T74/20576; Y10T74/20636; Y10T74/20648
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
271 words
A control lever assembly for use on a lawn mower having a handle, a rotary cutter and a brake for the rotary cutter biased into engaged position and releasable by a wire cable extending therefrom when moved to overcome the brake bias, comprising: a mechanism adapted to be mounted on the handle and having a base member defining a first stop member; a main lever pivotably mounted on said base and having a displaceable arm engageable with said first stop to prevent pivotable movement of said main lever; said main lever defining a first detent member engageable with a second stop; a cable assembly including said wire cable having one end retained in said main lever biased by said brake to urge the main lever in the direction of said first stop and connected to disengage the brake by rotation of said main lever in a direction opposite the bias; an auxiliary lever pivotably mounted on said base and having a projection engageable upon angular movement with said displaceable arm to displace the latter clear of engagement with said first stop for allowing said main lever to turn in response to means biased; said auxiliary lever having a second detent member engageable with said first detent member when said main body is pivotably moved beyond said first stop; and means biasing said auxiliary lever to retract said second detent member out of said recess upon manual release of said auxiliary lever after the brake has been disengaged by rotation of the main lever, whereby said main lever is automatically pivoted to engage the brake when said auxiliary lever is released manually.
Claim 2
Dependent Claim
271 words
A control lever assembly for use on a lawn mower having a handle, a rotary cutter and a brake for the rotary cutter biased into engaged position and releasable by a wire cable extending therefrom when moved to overcome the brake bias, comprising: a mechanism adapted to be mounted on the handle and having a base member defining a first stop member; a main lever pivotably mounted on said base and having a displaceable arm engageable with said first stop to prevent pivotable movement of said main lever; said main lever defining a first detent member engageable with a second stop; a cable assembly including said wire cable having one end retained in said main lever biased by said brake to urge the main lever in the direction of said first stop and connected to disengage the brake by rotation of said main lever in a direction opposite the bias; an auxiliary lever pivotably mounted on said base and having a projection engageable upon angular movement with said displaceable arm to displace the latter clear of engagement with said first stop for allowing said main lever to turn in response to means biased; said auxiliary lever having a second detent member engageable with said first detent member when said main body is pivotably moved beyond said first stop; and means biasing said auxiliary lever to retract said second detent member out of said recess upon manual release of said auxiliary lever after the brake has been disengaged by rotation of the main lever, whereby said main lever is automatically pivoted to engage the brake when said auxiliary lever is released manually.
Claim 3
Dependent Claim
44 words
A control lever assembly according to claim 1, wherein said main lever has a substantially circular proximal end portion disposed on said body having thereon an arcuate resilient arm extending along an outer periphery of said proximal end portion to comprise said displaceable arm.
Claim 4
Dependent Claim
35 words
A control lever assembly according to claim 1, wherein said auxiliary lever has a proximal end portion including said projection, said second detent member comprising a slidably mounted member biased to extend from said projection.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |