Black Decker Inc.

Alcan International Limited

David S Strong

Richard Peter Rosa

Weston J Van Wambeke

Ted Andrew Kimball

Marta J Acu&ntilde;a

Sean David Wilkinson

Brian S Burnett

Gabriel E Concari

Colin M Dyke

Murray D Hunter

Philip T Cassidy

Michael Georges Sirois

Roderick D Muir

Lawrie Cunningham

Bruce W Brooks

John A Dawson

David A Carrier

Samuel G Woods

Ronald A Jackson

Carl W Gifford

Daryll Scott Evans

Phillip T Cassidy

Stephen B Hunter

A vegetation trimmer having a head, a handle and an intermediate portion interconnecting the head to the handle. The intermediate portion is configured to include a first portion, a second portion and a third portion that are each arranged about a respective axis. The first portion is coupled to the primary handle at a first end and to the second portion at a second end. The second portion is coupled to the third portion at an end of the second portion opposite its connection to the first portion and an opposite end of the third portion is coupled to the head. The axis of the second portion is skewed to the axes of the first and third portions.

Ergonomic handle for vegetation trimmer

Vegetation trimmer guard

Vegetation trimmer with housing

Vegetation trimmer

Vegetation trimmer with curved neck

Mower

Mower shroud

A cordless electric mower having an energy management system that allows a user to operate the cutting blade motor of the mower at a wide range of user selected speeds. The mower is provided with a user adjustable throttle control which, when in the wide-open position allows the cutting blade motor to be rotated at a maximum, predetermined speed. When the throttle is set to some lesser speed, the system automatically implements a speed foldback routine whenever the mower encounters heavy loading which would result in an undesirably high current draw on the battery. When the speed foldback routine is implemented, the system limits the maximum amount of current that can be drawn by the motor until the excessive loading condition has been removed. Once the excessive loading condition has been removed, the speed foldback routine automatically increases the speed of the blade motor back up to almost the originally selected speed. This greatly improves the operating efficiency of the mower and thereby significantly extends the available operating time of the mower on a single charge. The state-of-charge of the battery is also monitored continuously during operation. An LED display provides the user with an indication of the approximate battery charge remaining.

Cordless electric lawn mower having energy management control system

A lawn mower having a deck height adjustment mechanism for simultaneously adjusting a height of a deck of a lawn mower at all four wheels of the lawn mower by the use of a single hand of the operator. The mechanism includes an index plate having a plurality of teeth thereon defining a plurality of deck height positions, and therefore a plurality of height positions of a cutting blade supported by the deck. The index plate is fixedly secured to an offset rear axle. An engaging plate having a pawl is coupled to an actuating member which is slidably, vertically moveable relative to the deck when the operator grips the actuating member and pulls upwardly away from the deck, while resting a palm of the same hand on a palm rest portion of the mechanism. A linkage member couples the index plate to a bracket of an offset front axle positioned at a front end of the deck. The operator adjusts the height of the deck relative to a ground surface by pulling upwardly with the fingers of one hand on the actuating member, while resting the palm of the same hand on the palm rest. This causes the engaging plate, and thus the pawl thereon, to be drawn out of engagement with the teeth of the index plate. The operator, while holding the actuating member engaged, may either pull upwardly with the same hand, thus raising the entire deck of the mower, or may urge the deck into a lower position. Movement of the index plate causes a simultaneous rotational movement of the offset front axle. Thus, all four corners of the deck are caused to be raised or lowered simultaneously as the operator either lifts or lowers the deck while engaging the actuation member.

Lawn mower having improved deck height adjustment mechanism

An improved handle-to-deck coupling arrangement for a lawn mower. The coupling arrangement is provided in part by a lawn mower handle having a pair of curved distal end portions. The distal ends portions fit within a pair of channels integrally formed in a deck of the lawn mower. The end-most portions of each distal portion of the handle fit within sockets formed in a lower-most portion of the deck. This coupling arrangement serves to spread out stresses experienced by the deck over a larger area of the deck when pushing or lifting forces are exerted on the handle member by an operator. In a preferred embodiment, an anchor-type fastening assembly is included. The anchor-type fastening assembly is associated with at least one of the sockets and provides a plurality of arm portions which fit within an interior area of the end-most portion of the handle member once the end-most portion is inserted in the socket. The arm portions may then be expanded radially outwardly into contact with an inner surface wall of the end-most portion of the handle member by advancing a threaded fastener into the area defined by the socket. When completely advanced, the threaded fastener urges the arm portions radially outwardly, thus locking the end-most portion in the socket.

Lawn mower having improved handle-to-deck coupling arrangement

A metal/air battery is described having gas bubbled through the electrolyte. It includes: (a) a tank defining a reservoir for liquid electrolyte; (b) one or more metal-air cells disposed for immersion in electrolyte, each cell including at least one air cathode having a first surface disposed for contact with electrolyte and a second surface exposed to air and a metal anode disposed for immersion in electrolyte in facing spaced relation to the first cathode surface to constitute therewith an anode-cathode pair electrically coupled by electrolyte, (c) a bubbler tube extending horizontally in the electrolyte reservoir beneath each cell and serving to inject gas bubbles into electrolyte between the anode and cathode of each cell, and (d) means for providing a pulsating flow of gas to the bubbler tube(s).

Metal/air battery with pulsed gas bubbling

Growing community of inventors

Battersea, Canada

David S Strong