[특허]Rotary mower having integrated deflector/mulching plug and improved blade

Rotary mower having integrated deflector/mulching plug and improved blade 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A01D-034/73 A01D-034/82
출원번호	US-0217137 (1994-03-23)
발명자 / 주소	Mosley Keith A. (Jackson TN) Elrod Kent H. (Humbolt TN)
출원인 / 주소	Murray, Inc. (Brentwood TN 02)
인용정보	피인용 횟수 : 26 인용 특허 : 0

초록 ▼

A rotary lawn mower specially adapted for selectively mulching and/or discharging grass clippings. The preferred embodiment comprises a lawn mower having a generally conventional cutting deck, with an integrated discharge chute/mulching plug hingedly secured to the deck adjacent the discharge opening. The integrated discharge chute/mulching plug is selectively movable between a plurality of positions, including a mulch position and a discharge position. In the mulch position, the inner wall of the plug member extends within the discharge chute to establish a generally continuous inner wall within the cutting chamber for improved mulching performance. The mower further includes an improved cutting blade, having a pair of raised rib sections intermediate the cutting edges and the central hub, the raised ribs being operative to create an additional upward air flow component to improve circulation during both mulching and discharging. Two embodiments of the integrated discharge chute/mulching plug are disclosed, having different locking mechanisms for securing the plug in its various positions.

대표청구항 ▼

A lawn mower adapted to mulch or discharge grass clippings having an engine mounted to the top surface of a cutting deck, with a drive shaft driven by the engine extending downwardly therefrom through a suitable opening in the cutting deck into the cutting chamber defined by said cutting deck, said cutting deck having a peripheral wall with a discharge chute formed therein and a discharge opening at the distal end of said chute, said lawn mower comprising: a plug member hingedly secured to said top surface of said cutting deck generally adjacent said discharge opening, said plug member being selectively moveable between a plurality of positions including a mulch position and a discharge position, said plug member comprising a central body having an outer face with upper, lower, front and rear edges and a laterally offset inner wall, with a pair of angularly oriented deflector plates extending longitudinally from said front and rear edges of said body, wherein said body of said plug member extends through said discharge opening into said chute and said face effectively blocks said discharge opening when said plug member is in said mulch position, thereby preventing the passage of grass clippings through said discharge opening, said inner wall being disposed within said chute inwardly from said discharge opening adjacent said cutting chamber and being operative to establish a temporary side portion of said cutting chamber, thereby restricting grass clippings from collecting inside said chute during normal mulching operation of said mower, and said inner wall extends laterally outwardly from said discharge opening when said plug is in said discharge position, said inner wall and said deflector plates cooperating to form an effective extension of said chute for directing grass clippings laterally outwardly from said cutting deck during normal discharging operation of said mower.

이 특허를 인용한 특허 (26)

Tutschka Alfred,DEX, Blade for a rotary mower and rotary mower.
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Elgin, Doug; Jerousek, Jeff, Blower attachment for a walk-behind lawn mower.
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Sawyer, Jr., Thomas Kidder, Collapsible grass ejection chute for a rotary lawnmower.
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Walker, Christopher T.; Vaughn, Christopher W.; Prinzo, Vincent Andrew, Combination grass discharge and mulch plug insert apparatus and method for a lawnmower.
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Bellis, Jr., William B., Discharge baffle for lawnmower.
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Seegert, Brian David, Discharge stopper units for mower decks.
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Hurst, John O.; Wadzinski, Chris A., Lawn mower having selectively usable side discharge chute.
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Hurst, John O.; Wadzinski, Chris A., Lawn mower having steeply inclined exit tunnel and battery access through rear face of mower cutting deck.
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Tamas, Dominic; Doyle, Patrick Anthony; Seidel, Daniel Paul, Lawn mower pivotable mulching flap.
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Darity, Hershel Lynn, Mower blade.
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Nicholson, Gary L.; Allen, Michael E., Mower cutting deck having operator controlled discharge opening using foot pedal control.
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Lopez, Ivan Jesus; Lara, Juan Luis; Ressler, Kyle T., Mower deck side discharge chute mounting.
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Shaver, Patrick; Tolson, Melissa; Ressler, Kyle T., Mower deck spindle cover.
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Dickey, Jesse E., Mower discharge door operating linkage mechanism.
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Richter, Harald; Richter, Lutz, Mower with mulching function.
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Troger, Hartmut; Tutschka, Alfred, Mowing and mulching system for lawnmowers.
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Ressler, Kyle T.; Woody, Derek M.; Tolson, Melissa, Mulch kit control lever.
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Seidel David,AUX ; Tamas Dominic,AUX, Mulching disc for a lawn mower.
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Kakuk, Jay J., Multi-bladed rotary cutting deck with mulching and discharge/collection modes.
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Procter, Allen; Procter, Susan, Quickly installable mulch-type accessory for a walk-behind or riding mower.
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Osborne, Christopher M., Variable mulching system for a lawnmower.
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Osborne, Christopher M., Variable mulching system for a lawnmower.
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Osborne, Christopher M., Variable mulching system for a lawnmower.
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Osborne,Christopher M.; Hartley,Dean E., Variable mulching system for a lawnmower.
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Osborne,Christopher M.; Hartley,Dean E., Variable mulching system for a lawnmower.
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Osborne,Christopher M.; Hartley,Dean E., Variable mulching system for a lawnmower.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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연합인증

Rotary mower having integrated deflector/mulching plug and improved blade 원문보기

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Rotary mower having integrated deflector/mulching plug and improved blade 원문보기

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이 특허를 인용한 특허 (26)

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