[특허]Motorboat propeller guard for improved performance

[미국특허] Motorboat propeller guard for improved performance 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B63H-005/16
출원번호	US-0838161 (1986-03-10)
발명자 / 주소	Eller Dennis E. (814 N. Wooster Algona IA 50511)
인용정보	피인용 횟수 : 35 인용 특허 : 2

초록 ▼

A propeller guard includes a rigid U-shaped sleeve which has a pair of legs extending on either side of the lower housing in the motor. The cavitation plates on the lower housing are received within a U-shaped channel formed in the sleeve for mounting the guard upon the motor. A cylindrical shield having an open inlet end and an open outlet end is secured to the sleeve and encircles the propeller to protect the propeller from contact with foreign objects. A frame member extends downwardly from the forward edge of the sleeve to the lower portion of the inlet end of the shield and engages the leading edge of the lower housing to provide structural support for the guard. A plurality of horizontally disposed ribs extend from the frame member to the shield to further protect the propeller from contact with foreign objects. A gridwork is pivotally mounted over the open outlet end of the shield to further protect the propeller from contact with foreign objects. The shield is positioned such that the longitudinal axis thereof is co-extensive with the axis of rotation of the propeller. The inlet end of the shield is coplanar with the forward end of the propeller and the inlet end of the shield extends rearwardly beyond the rearward end of the propeller.

대표청구항 ▼

In combination with a motorboat including a motor, a propeller operatively connected to said motor, a lower housing with opposite leading and trailing edges and terminating in a vertically disposed skeg, said propeller being mounted on said lower housing adjacent said trailing edge and above said skeg, and a pair of horizontally disposed cavitation plates having forward and rearward ends extending laterally from said lower housing and above said propeller, a propeller guard comprising: a rigid U-shaped sleeve having a forward end and opposite rearwardly extending legs and an elongated U-shaped channel formed therin, said channel having a closed forward end and open rearward ends which extend at least to the rearward ends of said cavitation plates, said open rear ends of said channels having an effective width therebetween substantially equal to the maximum combined width of said pair of cavitation plates whereby said sleeve is adapted to slide rearwardly into position with said legs extending on each side of said lower housing and with said cavitation plates received within said channel until said forward end of said sleeve engages said leading edge of said lower housing to thereby prevent rearward movement of said guard; means for closing said open rearward ends of said channel and thereby prevent forward movement of said sleeve; and a propeller shield having open inlet and outlet ends, being attached to said sleeve for encircling said propeller and thereby protecting said propeller from contact with foreign objects, a frame member extending downwardly from the forward end of said sleeve and engaging said leading edge of said lower housing substantially along the length thereof, and a plurality of longitudinally disposed ribs extending between said frame member and said shield to further protect said propeller from contact with foreign objects.

이 특허에 인용된 특허 (2) 인용/피인용 타임라인 분석

Springer Manfred H. (6935-14th Ave. Edmonton ; Alberta CAX T6K 3V4), Boat propeller guard.
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Kappas ; Chris S., Outboard motor and weed guard therefor.
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이 특허를 인용한 특허 (35) 인용/피인용 타임라인 분석

Corn, James F., Assembly and method to attach a device such as a hydrofoil to an antiventilation plate.
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Crepeau, Felix H., Boat propeller shield system.
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Corn, James F., Boating accessory.
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Corn, James F., Boating accessory.
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Hilleman, Terry B., Bow mounted system and method for jet-propelling a submarine or torpedo through water.
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Terry B. Hilleman, Bow mounted system and method for jet-propelling a submarine or torpedo through water.
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McIntosh Paul C., Defecting propeller guard.
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Sancoff, Gregory E., Fleet protection attack craft.
상세보기
Sancoff, Gregory E.; DiCarlo, Joseph A., Fleet protection attack craft.
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Sancoff, Gregory E., Fleet protection attack craft and underwater vehicles.
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Sancoff, Gregory E., Fleet protection attack craft and underwater vehicles.
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Kearns Alvin L. (Box 369 ; R.D. #1 Sutersville PA 10583), Flow control and protector device for an outboard motor.
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Taylor ; Jr. Guy, High performance boat prop guard.
상세보기
Sancoff, Gregory E.; Curcio, Joseph; Norman, David, High speed surface craft and submersible craft.
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Sancoff, Gregory E.; Curcio, Joseph; Norman, David, High speed surface craft and submersible craft.
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Sancoff, Gregory E., High speed surface craft and submersible vehicle.
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Sancoff, Gregory E., High speed surface craft and submersible vehicle.
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Sancoff, Gregory E., High speed surface craft and submersible vehicle.
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Embry Sol E. ; Embry Nellie, Lockable propeller guard apparatus.
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Lammli, Ernest, Lower unit guard for an outboard motor.
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Karls Michael A. (Hilbert WI), Marine drive weed deflector.
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Gruenwald, David, Marine vessel propulsion drive module.
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Hilleman, Terry B., Method and apparatus for propelling a surface ship through water.
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Lehmann, Dirk; Mewis, Friedrich, Pre-nozzle for a drive system of a watercraft to improve the energy efficiency.
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Feranda ; Sr. Louis (4251 W. Oquendo Las Vegas NV 89118), Propeller guard.
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Quiggins James H., Propeller guard.
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Newman Neil A. (Omro WI), Propeller protector.
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Snyder Richard H. (Oshkosh WI), Propeller shroud with load bearing structure.
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Kliewe, G?nter, Protective cage for an outboard motor and holding device thereof.
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Purnell John G. ; Becnel Alan J., Protective shrouding with debris diverting inflow vanes for pump-jet propulsion unit.
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Rollins,Houston, Safety propeller.
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Norman,George I.; Peterson,Thomas W., System and apparatus for improving safety and thrust from a hydro-drive device.
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William C. Schultz ; Gregory C. Morrell, Thrust enhancing propeller guard assembly.
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Hollenbach, Daniel F., Turbine apparatus with airfoil-shaped enclosure.
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Gruenwald, David, Vessel propulsion.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Motorboat propeller guard for improved performance 원문보기