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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 |
| 7345253 | Key structures Key structures are provided. A key structure includes a key cover, a substrate, a slider movable with respect to the substrate, a first rod, a second rod and a resilient member. The first rod pivotally connects the key cover and a first guiding portion of the substr... | 03/18/2008 |
| 7312414 | Key switch device A key switch device capable of preventing a key top from displacing in the horizontal direction when the key top is being depressed, and of minimizing wear and damage to the components thereof. A displacement restricting part, contacting each of a pair of link membe... | 12/25/2007 |
| 7091952 | Liquid proof switch array Switch arrays such as keyboards are described. The switch arrays may include an array of dome spring elements. Each dome spring element may define a chamber, and a plurality of channels may interconnect the chambers of the dome spring elements such that each chamber... | 08/15/2006 |
| 7075520 | Key press disambiguation using a keypad of multidirectional keys Multidirectional keys of a reduced keypad are used to disambiguate between multiple symbols associated with a single key. For example, pressing a key identifies a collection of two or more symbols associated with the key and subsequently rocking the key selects one ... | 07/11/2006 |
| 6880995 | Elastic-cup support for computer keyboard An elastic-cup support for keyboard is in the form of a flat locating sheet located on a membrane-type switch circuit board of the keyboard, and provided at positions corresponding to membrane-type switches on the circuit board with receiving holes for separately re... | 04/19/2005 |
| 6672782 | Keyboard structure A keyboard structure, comprising: a substrate, a scissors mechanism, and a key lid. The scissors mechanism and the substrate are connected together. The scissors mechanism has a rotational configuration formed by cross-connecting a first rod and a second ... | 01/06/2004 |
| 6672781 | Reduced noise key unit A key unit of a keyboard apparatus having at least one bumper extending from the key unit for cushioning the impact of the key unit against the enclosure of the keyboard apparatus when the key unit assumes a depressed position and/or when the key unit res... | 01/06/2004 |
| 6623195 | Collapsible keyboard A collapsible keyboard comprises at least one keyboard module, and each keyboard module has a plurality of keyswitches arranged in array pattern. At least one membrane circuit is provided to connect the plurality of keyswitches. When the keyboard is in an... | 09/23/2003 |
| 6575648 | Index bar device including keystroke function An index bar device including keystroke-function constitutes a base, a track frame mounted on the base having a track space formed therein, an index bar sliding means having a slide block held and reciprocally movable in the track space and an index bar h... | 06/10/2003 |
| 6270268 | Keyboard apparatus A key base side pivot point on one side of a pantograph is supported on a key base and a key top height adjusting mechanism that has a holder that supports the other key base side pivot point and a reciprocating link that links swingably to this holder is... | 08/07/2001 |
| 6257782 | Key switch with sliding mechanism and keyboard A key switch comprising a base, a key top arranged above the base, a pair of link members interlocked to each other and operatively engaged with the base and the key top to support the key top above the base and direct the key top in a vertical direction,... | 07/10/2001 |
| 6139207 | Keyboard apparatus A key base side pivot point on one side of a pantograph is supported on a key base and a key top height adjusting mechanism that has a holder that supports the other key base side pivot point and a reciprocating link that links swingably to this holder is... | 10/31/2000 |
| 6019530 | Keyboards with retractable keys The invention is directed to a keyboard where the keys are raised up from a retracted position upon the initialization of usage of the keyboard. An embedded airbag mechanism is self-inflatable to raise keys to the normal operating heights. The keys will b... | 02/01/2000 |
| 4468145 | Keyboard space bar stabilizer A keyboard has a space bar centrally mounted on a plunger and supported at its ends by a torsion rod. The torsion rod has crank arms at its ends which are connected to the space bar and serve to distribute the actuating force on the space bar so that the ... | 08/28/1984 |
| 4412754 | Space bar for low profile keyboards A space bar construction is provided for low profile keyboards which will accommodate, with the same construction, from a 1 to 3 space bar up to a 1 to 9 space bar. The arrangement provides a leveling system for the space bar to maintain exactly equal the... | 11/01/1983 |
| 4407596 | Case shift and lock input mechanism including a shift control switch A case shift and lock input mechanism comprising a pair of independently depressable shift keylevers and a depressable shift lock keylever are assembled in a keyboard for actuating a single shift control switch used to condition a printer for printing upp... | 10/04/1983 |
| 4384796 | Keyboard space bar stabilizer A keyboard has a space bar centrally mounted on a plunger and supported at its ends by a torsion rod. The torsion rod has crank arms at its ends which are connected to the space bar and serve to distribute the actuating force on the space bar so that the ... | 05/24/1983 |
| 4188137 | Low silhouette keyboard A low silhouette keyboard having a plurality of keylevers arranged in rows and in parallel relationship to one another are suspended, guided and biased to restore by opposing flexible support members. The keylevers are "T" shaped which includes a cross ar... | 02/12/1980 |
| 4096935 | Input device An input device is provided with simplified operation for correcting errors. One key is adapted to perform a plurality of key functions, for instance, one function feeds a recording medium backwardly, another prints an error mark. Such key is provided wit... | 06/27/1978 |
| 3982081 | Keyboard assembly with overlapped flexible printed circuit cable switch This invention relates to a keyboard switch assembly having a minimal number of components. A flexible printed circuit cable is configured in such a manner so that the flexible printed circuit cable contains complementary overlapping contact points interc... | 09/21/1976 |
| 3962556 | Keyboard with versatile switch support structures A keyboard has contact pairs on a substrate and has a support with openings therein secured over and spaced from the substrate with the support openings aligned with respective contact pairs on the substrate. Switch mechanisms disposed in the support open... | 06/08/1976 |
