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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 6286643 | Parking brake mechanism in drum brake A parking brake mechanism in the duo-servo type drum brake includes a link type shoe drive mechanism for expanding a pair of brake shoes and an operating force generator for inputting a shoe operating force into an input lever of the shoe drive mechanism ... | 09/11/2001 |
| 6059077 | Drum brake Within a wheel cylinder, a drive piston and a control piston, the base ends of which receives a hydraulic pressure from a master cylinder, are oppositely disposed while being axially aligned with each other. A primary shoe is pressed by the drive piston, ... | 05/09/2000 |
| 5099967 | Drum brake assembly A drum brake assembly has brake shoes 2 and 3 within a rotatable drum 1. The shoes 2 and 3 are displaceable to effect braking by an hydraulic ram 7 and free ends 9 of the shoes react against an abutment 10. This reaction is effected through a layer of vis... | 03/31/1992 |
| 4768631 | Low sensitivity drum brake A drum brake comprises two brake shoes (4,5) which are operable hydraulically and/or mechanically. A first brake shoe (4) is supported trailingly in forward travelling direction and leadingly in backward travelling direction. In the forward travelling dir... | 09/06/1988 |
| 4603763 | Drum brake with negative feedback for brake shoe friction compensation This invention relates to a drum brake with two internal expanding brake shoes pivoted at substantially diametrically opposite axes. It incorporates the negative feedback of the brake shoe sliding friction forces to oppose the applied hydraulic brake actu... | 08/05/1986 |
| 4577733 | Drum brake or clutch A drum brake or clutch has a fixing member, a drum adapted to be rotatable relative to the fixing member, a pair of arcuate shoes disposed within the drum such as to come in and out of contact with the drum, an actuating device attached to the fixing memb... | 03/25/1986 |
| 4401197 | Drum brake An improved drum brake is of the type which includes a pair of actuators with a pair of arcuate brake shoes extending therebetween. Each brake shoe is capable of limited movement along a path between the actuation end of one of the actuators and the ancho... | 08/30/1983 |
| 4369863 | Internal shoe drum brakes for vehicles An internal shoe-drum brake is disclosed in which a pair of arcuate shoes can be applied to a rotatable drum by an hydraulic actuation system for normal service braking when the brake acts as a brake of the "two-leading" shoe type and a mechanical actuati... | 01/25/1983 |
| 4231452 | Spring applied, electric released drum brake A spring-applied, electrically released drum brake which is self-energizing in one direction, and partially deenergizing in the other direction. Regardless of braking direction, the brake shoes are applied with substantially zero force, with the braking f... | 11/04/1980 |
| 3951061 | Label printing apparatus A strip of label material is fed from a supply roll to a preprint unit which incorporates a set of strip feed rolls driven by an electric motor-reducer drive unit. The drive unit is adapted to be stopped by a rotary solenoid actuated brake controlled by a... | 04/20/1976 |
