Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 5820499 | Magazine ball dispenser A tubular table tennis ball storage and discharge magazine formed with a lateral discharge opening and positioned gravitationally to feed the balls to the opening, the magazine having elastic retainers at the opening to hold the advance ball poised for se... | 10/13/1998 |
| 5411269 | Electronic fluid sensing actuating target apparatus Water-gun Target Game and Apparatus in which a direct-current electrical water-presence detector, supported by or worn on an outer garment, is the bull's-eye. A hit by the water jet initiates action by a direct electrical effect, such as a resistance chan... | 05/02/1995 |
| 4944649 | Mechanism for coupling subordinate machine to tractor This is a swing-tower arrangement for coupling a back-hoe assembly to a tractor or the like. It features a rocker swingable in elevation on the swing tower. An actuator on the swing tower controls the position of the rocker, improving transport and contro... | 07/31/1990 |
| 4913376 | VTLH autogyro This invention relates to autogyros and to counter-rotating rotor helicopters. It further relates to compound autogyros and/or helicopters that employ a lifting surface or wing in forward flight. More specifically this invention provides an autogyro with ... | 04/03/1990 |
| 4442781 | Deposit box A deposit box for an automatic teller machine equipped with a deposit receiving chamber and an auxiliary or escrow chamber, both of which are provided with access doors communicating with the exterior of the box. Both doors are opened and closed automatic... | 04/17/1984 |
| 4160355 | Forage harvester and row crop attachment therefor A forage harvester and fixed-construction row crop attachment therefor are disclosed. The attachment has three plant-receiving passages consisting of a central passage and a pair of side passages on opposite sides of the central passage. Each passage has ... | 07/10/1979 |
| 4158842 | Radar type fuzes 1. In a target-approaching doppler radar of the type including means for generating radio frequency signals and supplying local oscillations, means for generating random noise bursts, modulator means, means for mixing said local oscillations with echo sig... | 06/19/1979 |
| 4075822 | Crop conditioner roll structure A novel combination of a resilient upper roller having circumferentially spaced rib formations and a rigid lower roller having complementary rib formations. The formations are spiral or herringbone-like and register rib-to-rib while the conditioner provid... | 02/28/1978 |
| 4040358 | Hydraulic delayed arming fuze The invention is a missile fuze. A slider carries a detonator so that it is normally out of alignment with the firing train. The slider is locked in position by cylinders. The cylinders contain pistons which respond to centrifugal force to move radially o... | 08/09/1977 |
| 4022545 | Rooted aerodynamic blade and elastic roll pin damper construction Herein disclosed is the combination of an aerodynamic blade having a root formed with outwardly curved shoulders and a transverse curved indentation, a rotor disc formed with a blade root receiving slot having curved complementary retaining surfaces in co... | 05/10/1977 |
| 4018043 | Gas turbine engines with toroidal combustors A gas turbine engine is described in which a compressor, combustor and turbine are arranged in series flow relationship. Pressurized air enters the combustion chamber with approximately the same swirl as imparted to it by the compressor rotor, through an ... | 04/19/1977 |
| 3953987 | Aircraft engine flexible fluid damped coupling The flexible mechanical coupling herein shown comprises a drive member, flange and internally notched barrel in rigid relationship. The flange is a part of a helically formed coil-like torsion spring. An externally toothed sleeve is in concentric relation... | 05/04/1976 |
| 3949199 | Pulse width decoder Herein disclosed is a pulse width decoder comprising an oscillator activated to generate clock pulses of relatively short duration as long as an input signal pulse is applied, a shift register adapted to channelize a multiplicity of pulse widths, means in... | 04/06/1976 |
