Black Decker Inc.

Gregory E Moores

John E Dibbern, Jr

Robert E Kubicko

Paul D Johnson

Louis C Martone

Scott D Price

Frank J O'Hara

William H Younger

Joseph J Kopp, Jr

A biscuit jointer cutter for making segment shaped cuts by plunge cutting has a shoe assembly reciprocally movable relative to a housing containing a motor. The shoe assembly houses a cutter blade rotatably driven by the motor, and has a front opening through which the blade is movable in a forward direction for cutting and retractable in a rearward direction after cutting. A fence assembly is mounted on the shoe assembly above the front opening. The fence assembly is adjustably movable upwardly and downwardly relative to the front opening by means of a rack and pinion mechanism, and also has a fence adjustably pivotable through 90 degrees. A depth of cut adjustment mechanism is operatively connected between the shoe assembly and the housing, and includes a movable rod cooperative with a stop. The stop is a turret selectively rotatable about an axis eccentric of the rod and having recesses of different axial length. A single spring surrounds the rod and functions to both bias the blade to retract and to yieldably latch the turret stop in selected positions. The shoe assembly has a pivotally attached shoe to expose a blade chamber and the blade.

Power biscuit jointer cutter

A coffee brewing unit is disclosed which enables a brew cycle to be initiated automatically upon insertion of a coffee receiving vessel into its coffee receiving position, but which prevents a brew cycle from proceeding if a number of required operating conditions are not implemented. If all operating conditions again become implemented after a brew cycle, once underway, is interrupted, the brew cycle continues on to completion. Visual signals indicate that a brew cycle is in progress and also when sufficient mineral deposits are present that cleaning of the unit is recommended. An insulated carafe is used as the vessel to receive brewed coffee thereby eliminating the need for a warmer plate. The unit may be mounted under a cabinet to thereby maximize usable countertop space and a coffee basket for the unit utilizes a dispensing valve which is opened by the carafe when inserted into position but which closes when the carafe is withdrawn. A thermostat which is used in association with the water generator for the unit has a manual reset switch which is actuated by a self contained water reservoir when moved into its operating position.

Carafe-operated coffee brewing system

A coffee brewing machine utilizes an insulated carafe to receive the brewed coffee and automatically turns itself off a short time after completion of a brew cycle. The machine also turns off automatically a specified time after a brew cycle is initiated when calcification is so extreme that flow of water through the unit is totally prevented. Additionally, as a safety feature, the system also turns off automatically in the case of a 'dry run', that is, a short specified time after accidental energization when no water is in the reservoir. A lamp is lighted when a brew cycle is in progress but is extinguished at other times.

Auto-off coffee brewing system

For a coffee brewing machine, an indicating system which operates to notify the user when it is time to clean the water supply conduit of accumulated mineral deposits. When a self contained removable reservoir is inserted into its operative position connecting to the water supply conduit, it closes the contacts of a temperature sensitive switch. During normal operation, the switch opens when water is depleted from the reservoir and the brewing cycle is completed. However, if the switch opens while water remains in the supply conduit upstream of the heater mechanism, this is a sure indication that there is a substantial accumulation of mineral deposits in the supply conduit. Thus, a sensing mechanism is employed to detect the presence of water in the supply conduit after the temperature sensitive switch opens, and a lamp is energized to indicate the condition. In one embodiment, the sensing operation is performed by an electromechanical device, and in another embodiment by logic circuitry.

Calcification indicator

A peeler attachment for an electric appliance includes a frame having a central slot therein and a blade disposed centrally of the slot. The blade includes first and second cutting edges at opposed sides thereof. The cutting edges are spaced from the central slot to form first and second entry channels into the slot. The blade includes first and second surfaces facing the slot shaped to provide continuously increasing exit channels whereby any tendency for peelings to become wedged in the exit channels is avoided. A shank for locking the peeler attachment into the electric appliance is preferably unitary with the blade. First and second locking notches in the shank permit installation of the peeler attachment in first and second rotational positions angularly separated by 180 degrees, whereby both right-handed and left-handed user are accommodated.

Peeler attachment for electric knife

A contact includes an arcuately-shaped member having opposite end portions which are joined by an intermediate U-shaped portion. The end portions are slotted to form bifurcations which include contact-engaging surfaces. A contact element includes elongated first and second portions which are joined by an intermediate portion. A lanced-out tab is formed in, and forms an acute angle with, the first portion with the tab opening toward the intermediate portion.

Electrical contacts for a switch

An electric knife having a housing, a motor fixed in the housing having a drive shaft disposed for rotation about a drive axis, a spur gear fixed to the end of the drive shaft, a flange fixed to the motor including an integrally formed, axially-projecting output shaft coaxial to an output axis and parallel to the drive axis, an output gear in meshing engagement with and driven by the spur gear disposed on the output shaft for rotation about the output axis, a tubular element coaxially engaging the output gear for rotation therewith about the output axis, the tubular element including a cylindrical cam in the outside surface thereof, and a pair of blade holders disposed in the housing in adjacent, opposed relation for independent, linear reciprocation parallel to and on opposite sides of the output axis. Each blade holder has a first end for releasably engaging a blade and a second end including a cam follower engaging the cam, the cam followers engaging the cam at positions 180 degrees apart such that rotation of the output gear generates independent, opposite linear reciprocation of the blade holders.

Electric knife drive mechanism

An electric mixer for selectively rotating a pair of cooperating beaters, the mixer comprising a housing defining a cavity having an axis extending between first and second ends thereof, a motor disposed in the cavity generally coaxial with the cavity axis, the motor including an axial drive shaft and a drive gear fixed to the second end of the drive shaft, a gear case fixed to the second end of the motor, the gear case including a pair of integral, depending tubular shafts having rotation axes substantially parallel to each other and to the cavity axis, each tubular shaft having a bore open at the first and second ends thereof. The mixer further includes a drum coaxially disposed on each tubular shaft for rotation about the respective rotation axis, each drum including a driven gear integrally formed at the first end thereof and structure at the second end thereof for releasably engaging the shaft of one beater, the driven gears being in meshing engagement, and a reduction gear rotatably supported by the gear case, the reduction gear being driven by the drive gear and driving only one driven gear. The mixer further includes an ejector slidably disposed for axial movement in the cavity, the ejector having a first end projecting through an opening in the housing for manual actuation and a second end including a pair of depending rods, one rod being disposed in the bore of each tubular shaft through the open first end thereof for engaging the first end of the shaft of one beater.

Electric mixer with beater eject mechanism

Two pairs of contact strips are mounted on the respective bridge members of an integral web portion of the molded field case of a power tool or other motor-driven device. The forward ends of the contact strips are cantilever mounted and automatically engage the respective terminals on the field, as the field is inserted into the field case and is secured therein. An annular wire harness is mounted on the rear bearing boss of the field case. Spaced contacts are carried by the wire harness and engage the respective ends of the first pair of contact strips. The respective ends of the second pair of contact strips are connected to terminals on the ends of the brush shunts. In a reversing embodiment, a third pair of contact strips is mounted on the bridge, and a rotatable reversing subassembly is mounted on the rear bearing boss in lieu of the wire harness.

Methods of assembling components of an electric motor

Reversing switch

Two pairs of contact strips are mounted on the respective bridge members of an integral web portion of the molded field case of a power tool or other motor-driven device. The forward ends of the contact strips are cantilever-mounted and automatically engage the respective terminals on the field, as the field is inserted into the field case and is secured in it. An annular wire harness is mounted on the rear bearing boss of the field case. Spaced contacts are carried by the wire harness and engage the respective ends of the first pair of contact strips. The respective ends of the second pair of contact strips are connected to terminals on the ends of the brush shunts. In a reversing embodiment, a third pair of contact strips is mounted on the bridge, and a rotatable reversing subassembly is mounted on the rear bearing boss in lieu of the wire harness.

Electrical connection system for motors

A switch has a body mounted directly on the rear bearing boss of the integral web portion of a molded plastic field case for a power tool or other motor-driven device. The switch has a pair of spaced contacts engaging the respective rearward end portions of a complementary pair of contact elements carried by the web portion of the field case. The respective forward end portions of the contact elements are connected to respective terminals on the field.

Growing community of inventors

Reisterstown, MD, United States of America

Gregory E Moores