Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 8067706 | Timer for operating electric appliances at Saturday and Holyday according to Jewish religious law A control device (timer) enabling activation of electric appliances for a required time period at Saturday and Holyday within the frame of Jewish religious law is disclosed. The timer comprises a first timing device, activating the appliance from time to time for a ... | 11/29/2011 |
| 5113124 | Programmable appliance controller A programmer for an appliance having a line power switch and a plurality of program switches sequentially actuated by a cyclic cam mechanism. The program switches are latched to the actuated condition and uplatched independently of the cyclic mechanism by... | 05/12/1992 |
| 4814556 | Camstack and switch assembly and timer utilizing same The hub of a camstack is in the shape of a cone. There are ribs carried on the cone surface with the ribs having cam surfaces that are substantially parallel to the cone surface. The camstack is particularly adaptable for actuating a plurality of individu... | 03/21/1989 |
| 4743820 | Electronic appliance control An electric appliance control system is disclosed in which a logic controlled, solid-state, electronic system is used in conjunction with a mechanical switching device in the form of a cam disc operating a plurality of cam-operated switches. The control s... | 05/10/1988 |
| 4604504 | Timer blade arrangement There are three spring blades held in working relationship to a camstack which provide the making of two different and distinct circuits simultaneously by substantially simultaneously closing electrical contacts carried by the blade. Of the three blades a... | 08/05/1986 |
| 4587389 | Snap action timer switch assembly A switch assembly to provide snap action switching on a cam rise in a program timer includes a follower assembly on the free end of a first blade to engage the program member to reference the first blade relative to the program member. A cam follower for ... | 05/06/1986 |
| 4521722 | Appliance controller A microcomputer-based electronic controller for a dishwasher utilizes a motor driven timing cam for selectively energizing the electromechanical components of the dishwater. An internal diagnostic routine in the microcomputer insures that the timing cam i... | 06/04/1985 |
| 4468600 | Appliance controller A microcomputer-based electronic controller for a dishwasher utilizes a motor driven timing cam for selectively energizing the electromechanical components of the dishwasher. An internal diagnostic routine in the microcomputer insures that the timing cam ... | 08/28/1984 |
| 4415785 | Timer switch A timer switch comprises a cam member of a generally disc shape having a cam surface at its periphery. The cam surface is stepped to provide a depressed portion and a shoulder portion adjacent thereto. The cam surface has a notch formed in the shoulder po... | 11/15/1983 |
| 4381432 | Electromechanical timer with improved short interval accuracy An improved electromechanical timer for accurately controlling relatively short time intervals, such as fill time intervals for washing appliances. A cam-actuated switch includes a first cam-following member rigidly supported from a first contact arm and ... | 04/26/1983 |
| 4307303 | Cyclic electric time switch means Cyclic electric time switch means has a housing with an electrical clock therein and trip contact means comprising a toothed gear wheel coupled to a drive gear of the clock and mounting gear wheel. The disc mounts an electrical switch having contact termi... | 12/22/1981 |
| 4079636 | Cam setting means for a cam assembly A washer is adjustably connected to a driving member of a cam assembly and is coupled to a cam means of the cam assembly.... | 03/21/1978 |
