Celebrity Inventors
Glam girl Heddy Lamar may have used her good looks to good effect on the silver screen, but she put her smarts to better use as an inventor. During World War II, she co-patented a frequency-switching system for torpedo guidance that was considered years ahead of its time.
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| Number | Title | Issue Date |
| 7331701 | Gearbox for concrete mixer A drive for a mixing drum has a compensating device (25) for the purpose of compensating the motions between a drum (1) and a bearing bracket (4), which consists of a first component (20), an elastic element (17), and a second comp... | 02/19/2008 |
| 7188991 | Auxiliary control station for a rear dispensing concrete mixing vehicle An auxiliary control station for a rear dispensing concrete truck that controls the truck's steering, braking, and throttle. A seat with controls accessible from the seat may be positioned outside of the cab, such as to allow control of the truck from a position wit... | 03/13/2007 |
| 7070319 | Sample rotator with fixed sampling point A device for holding and rotating cylindrical sample containers for use in analytical instrumentation. The device maintains the surface of material in the container at a constant location during rotation by using a series of fixed contact points. The drive wheel is ... | 07/04/2006 |
| 7048429 | Concrete mixer In order to make good-quality concrete, a concrete mixer for mixing materials of concrete by rotation is provided so as to enhance fluidity of a mixture. A mounting frame 7 supporting a drum 2 of a concrete mixer 1 fixes a vibration device 25... | 05/23/2006 |
| 6938716 | Concrete mixing truck anti-rollover system An anti-rollover system is used with a concrete mixing truck with a mixing drum, in particular during turning maneuvers, for preventing rollovers by the truck. The anti-rollover system is comprised of one or more sensors on the truck which generate an input signal r... | 09/06/2005 |
| 6928891 | Material sample preparation apparatus and method An automated apparatus for preparing material samples includes a rotatable drum support assembly, a drum rotatably contacting the drum support assembly, a fan, and a powered drive mechanism. The drum includes a hollow main section and first and second hollow end sec... | 08/16/2005 |
| 6923566 | Portable drum jumper The current invention is to an arrangement for a portable emergency drum jumper that can be mounted to the mixer fender or mixer fender of a truck to provide emergency power to rotate the drum. The pump has been substantially reduced in size by rotating the drum at ... | 08/02/2005 |
| 6286987 | System and method for controlling the speed of an engine providing power to a concrete mixing drum A system for controlling the speed of an engine in a vocational application is implemented within a mobile cement mixer. The system permits operation of the engine at a high rpm PTO speed to drive the mixing drum at a recommended speed for optimal full mi... | 09/11/2001 |
| 5752768 | System for control of the condition of mixed concrete A mobile cement mixer is provided with a programmed controller that automatically causes the mixing of concrete to follow a predefined mixing regime that is interruptable by an operator but will resume the mixing regime at the appropriate stage.... | 05/19/1998 |
| 5556197 | Asphalt plant for both continuous and batch operation A combination continuous/batch asphalt plant includes mechanisms and controls which permit it to be hot-stopped when operating in the continuous mode.... | 09/17/1996 |
| 5490928 | Tandem waterwheel trommel A tandem waterwheel type trommel apparatus having a laterally-disposed drain-off drum and a laterally-disposed classifying drum combined through a short pipe to form a main body, which is rotatably disposed on a base and is connected to a drive unit. A fr... | 02/13/1996 |
| 5348387 | Auxiliary bearing and drive mechanism for a concrete mixer A drive and bearing arrangement for a rotatable member such as a concrete mixing drum has a first drive mechanism for providing a rotational drive force to the drum, a primary bearing coupled to the primary drive mechanism and the drum for supporting an e... | 09/20/1994 |
| 5243244 | Mixer motor with splashproof housing In the case of a mixer for constructional materials or the like, comprising a driven drum which is rotatably mounted on a yoke pivoting on a frame and is able to be driven by means of a frame-mounted drive device including an air-cooled electric motor whi... | 09/07/1993 |
| 5137366 | Mixer vehicle A small mixer vehicle structured as a trailer has clutching mechanics for frictionally revolving a rotatable drum during towing and for both manual and powered auxiliary drum turning when the trailer is parked. For manual drum turning, an attachable crank... | 08/11/1992 |
| 5082553 | Concrete aggregate collecting apparatus An aggregate collecting apparatus. A meter which measures the gross weight of the rotary drum is linked to the speed change gear for the rotary drum in such a manner as to be operationally connectable therewith so that the speed of rotation of the drum ca... | 01/21/1992 |
| 5039226 | Portable concrete mixer A trailer for transporting and mixing concrete or similar products, comprising a wheeled frame and a mixing drum mounted to the wheeled frame for rotation in a first direction for mixing concrete and in a second direction for discharging concrete from the... | 08/13/1991 |
| 4585356 | Concrete mixer truck The invention relates to a concrete mixer truck having a mixer drum adapted to be rotated by the traction motor of the vehicle through an auxiliary transmission of the traction motor transmission. It is an object of the invention to ensure that the power ... | 04/29/1986 |
| 4491415 | Rotary drum mixing device A light weight, inexpensive rotary drum mixing device is provided in which an essentially pear shaped drum, open at the small end and having an axially elongated socket at the large end, is rotatably supported on a unitary base having a transversely exten... | 01/01/1985 |
| 4487543 | Garbage truck with revolving receptacle A control system is provided for a garbage truck with a revolving receptacle having an adjusting pump which is remotely controlled by a control card having special control characteristics for the hydraulic system.... | 12/11/1984 |
| 4461577 | Variable height concrete truck The present invention comprises a compact variable height, concrete truck having a concrete mixing barrel which may be positioned in a raised position for maximum load transportation and concrete mixing and pouring, and which may be positioned in a lowere... | 07/24/1984 |
| 4435082 | Rotary drum mixing device A light weight, inexpensive rotary drum mixing device is provided in which an essentially pear shaped drum, open at the small end and having an axially elongated socket protruding from the large end, is rotatably supported on a unitary base having a trans... | 03/06/1984 |
| 4387995 | Portable concrete mixing and transport apparatus A portable concrete mixing and transport device comprises a trailer having wheels and a drum supported above the wheels, said drum being movable into and out of engagement with the wheels. Concrete mix carried in the drum is agitated by pulling the traile... | 06/14/1983 |
| 4320586 | Rotary drum A rotary drum comprising a bearing ring loosely arranged on the drum shell and spacer plates arranged between the ring and the shell, a pair of elements for axially holding a spacer plate in position being provided at one end of each spacer plate, one ret... | 03/23/1982 |
| 4294548 | Drive arrangement for concrete mixers A concrete mixer drive for a hand wheeled barrow type of mixer, the drive comprising an electric motor mounted on the main supporting bearing of the mixer bowl, and a multiple reduction belt drive from the motor to a pinion driving the main bowl.... | 10/13/1981 |
| 4265031 | Rotary drum mounted by means of running rings A rotary drum for the heat treatment of bulk goods, with the drum being mounted by means of thrust rings. Wedges are arranged on the outer periphery of the shell of the rotary drum, the wedges being disposed opposite to one another at a spacing correspond... | 05/05/1981 |
| 4223997 | Portable cement mixer A mixer particularly designed for light, domestic use is provided. The mixer includes a base frame, a mixing drum, and a handle, all of which are readily assembled and disassembled for easy transportation, even in an automobile. The drum is supported on t... | 09/23/1980 |
| 4148589 | Cement mixer having a guard for gears A gear guard is provided and specifically a guard for a pinion gear which meshes with a larger gear. The guard is specifically designed for use with a cement mixer and includes a U-shaped portion extending around part of the pinion gear and an elongate po... | 04/10/1979 |
| 4135171 | Cement mixer with switch harness A switch harness is provided for a cement mixer. The cement mixer has a motor housing which encloses an electric motor and the drive components for the mixer drum. A switch harness is located in the housing and includes an on-off motor switch which is acc... | 01/16/1979 |
| 4124304 | Direct drum drive for concrete mixer trucks A device for driving and supporting the drum of a concrete mixer truck comprises a casing fixedly mounted on the truck chassis by stud bolts, and a driving shaft connected in driving relationship with the drum by a universal coupling consisting of a drivi... | 11/07/1978 |
| 4114193 | Device for the control of concrete manufacture in truck concrete mixers A system and method to control concrete production employs a loading station and a mixing truck having a rotatable mixing drum for travelling between the loading station and a job site. A control system is provided to insure that properly proportional ing... | 09/12/1978 |
