[특허]Automatic pool cleaner gear change mechanism

[미국특허] Automatic pool cleaner gear change mechanism 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	E04H-004/16 E04H-004/00
출원번호	US-0482747 (2002-06-27)
등록번호	US-7464429 (2008-12-16)
우선권정보	ZA-2001/0046(2001-07-03); ZA-2002/1669(2002-02-28)
국제출원번호	PCT/ZA02/000106 (2002-06-27)
§371/§102 date	20040616 (20040616)
국제공개번호	WO03/004799 (2003-01-16)
발명자 / 주소	Stoltz,Herman
출원인 / 주소	Pentair Water Pool and Spa, Inc.
대리인 / 주소	Greenberg Traurig, LLP
인용정보	피인용 횟수 : 17 인용 특허 : 58

초록 ▼

A mechanism (106) for selecting one of a first gear (102) and a second gear (104) for driving an automatic swimming pool cleaner (10) includes a bi-stable oscillating gear change assembly (100). The assembly is moveable between a first position wherein the first gear is engaged and a second position wherein the second gear is engaged. A first magnet (142) is carried by the assembly. A second magnet (138, 140) is carried externally of the assembly on the cleaner body (18). A cam arrangement (152, 160) initiates movement of the assembly (100) from one of the first and second positions to enable mutually repelling forces between like poles of the first and second magnets (142, 138, 140) to cause the assembly to settle in another of the first position and the second positions, thereby to change between the first and second gears quickly and cleanly.

대표청구항 ▼

The invention claimed is: 1. In an automatic pool cleaner comprising a first gear and a second gear, a mechanism for changing between the first gear and the second gear, the mechanism comprising: an oscillatable gear carrying assembly moveable between a first position wherein the first gear is engaged and a second position wherein the second gear is engaged; a biasing mechanism for urging the assembly towards a first position when selected and to the second position when selected; and an actuating arrangement for selecting one of said positions by initiating movement of the assembly from another of said positions, to enable the biasing mechanism to urge the assembly towards the selected one of said positions; the first gear and the second gear being mounted on the assembly and when the first gear is engaged, the cleaner is driven to move in a first direction and when the second gear is engaged, the cleaner is driven in another direction; the biasing mechanism comprising a first magnet having a pole of a first kind and a pole of a second kind which is carried by the assembly and a second magnet having a pole of the first kind and a pole of the second kind mounted externally of the assembly, with the pole of the first kind of the first magnet facing towards the pole of the first kind of the second magnet, so that mutually repelling forces between said first poles urge the assembly towards the selected one of said positions. 2. A mechanism as claimed in claim 1 wherein the first gear and the second gear when engaged drive a driven gear connected to drive an axle of a wheeled undercarriage of the cleaner. 3. A mechanism as claimed in claim 2 wherein the first gear, the second gear and driven gear are bevel gears. 4. A mechanism as claimed in claim 1 wherein the oscillatable gear carrying assembly comprises a turbine driven shaft of the cleaner. 5. A mechanism as claimed in claim 4 wherein the shaft comprises a formation engaging a corresponding formation on the turbine for rotatably driving the shaft and wherein the shaft is free for axial movement relative to the turbine between a first position wherein the first gear is engaged and a second position wherein the second gear is engaged. 6. A mechanism as claimed in claim 5 wherein the assembly comprises a pivotable member pivoted to a body of the cleaner and for manipulating the shaft between the first position and the second position. 7. A mechanism as claimed in claim 6 wherein the pivotable member cooperates with a bush which is fast with the shaft. 8. A mechanism as claimed in claim 7 wherein the bush is mounted in a bearing for rotation with a first part of the bearing, and wherein a second part of the bearing is mounted on a bearing holder which is pivotably carried by the member. 9. A mechanism as claimed in claim 8 wherein the member is an elongate member and wherein the bearing holder is mounted for axial movement relative to the member. 10. A mechanism as claimed in claim 6 wherein the first magnet is carried in a foot part of the pivotable member, wherein the second magnet is mounted on the body of the cleaner and wherein a third magnet is mounted on the body spaced from the second magnet to define a passage way for the foot part of the pivotable member. 11. A mechanism as claimed in claim 6 wherein the actuating arrangement for initiating movement comprises a first cam cooperating with the pivotable member. 12. A mechanism as claimed in claim 11 wherein the first cam is a turbine driven cam comprising first and second lobes and wherein the arrangement further comprises a passive second cam comprising first and second lobes. 13. A mechanism as claimed in claim 12 wherein the first lobe of the first cam is arranged to engage the member to move the member from the second position and wherein the second lobe is arranged to cooperate with the first lobe of the second cam to cause the second lobe of the second cam to move the pivotable member from the first position. 14. A mechanism as claimed in claim 12 wherein the first cam is driven by a further turbine on the cleaner.

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[미국특허] Automatic pool cleaner gear change mechanism 원문보기

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[미국특허] Automatic pool cleaner gear change mechanism 원문보기

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