Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 4609111 | Rotatable stand The present invention provides a rotatable stand usable for displaying objects such as motor vehicles. The rotatable stand has a central rotatable member rotatable on a base and the rotatable member supports extensible limbs on which objects for display c... | 09/02/1986 |
| 4549777 | Library shelf support system A guide channel member for a shelving system permits a shelf with an electrical safety device mounted thereon to be vertically repositioned while minimizing potential damage to the wire leads and maintaining a neat appearance. The invention is particularl... | 10/29/1985 |
| 4533055 | Storage rack for drilling tubulars A rack for supporting drilling tubulars such as drill pipe, collars and the like includes a base and a rail. The rail is coupled to the base by means of two columns, each of which is provided with threads such that the tilt angle of the rail with respect ... | 08/06/1985 |
| 4354603 | Rigid magnetic disc stacker A stacking device is provided for rigid discs which have an interior aperture. An elongate registry member has cross sectional dimensions slightly less than the interior dimensions of the aperture in the discs. The registry member has a hollow interior an... | 10/19/1982 |
| 4216619 | Horticulture device for rotating plants due to transpiration and evaporation of moisture A horticulture device is provided for rotating a plant as moisture transpires from the plant and evaporates from the container holding the plant. The device includes a spring which is linearly distorted due to gravity as the plant is watered and which is ... | 08/12/1980 |
| 4175354 | Plant growing device A plant growing device includes a two sectional base having an upper and a lower portion, wherein a mechanism is provided for the controlled rotation of the upper portion relative to the stationary lower portion, and a flower pot containing a plant is pos... | 11/27/1979 |
| 4168006 | Foldable supporter of clothes-drying bars A foldable supporter of clothes-drying bars provided with an arrangement whereby the supporter can be withdrawn into its folded state to under the shelter of roof in response to the reception of rain drops on the rain-drop receiver, thereby avoiding the t... | 09/18/1979 |
| 4117630 | Revolving planter A revolving hanger for a planter in which a motor is employed to revolve the hanger support. This motor is preferably a weight operated motor with suspended weights which are located in the area normally occupied by the cords supporting the planter so tha... | 10/03/1978 |
| 4026067 | Plant turntable A plant turntable having a power supply for the rotation of a potted plant and the like. The turntable includes an imperforate disc supported by a ring-mounted ball bearing assembly for the support of the potted plant which is driven by the shaft of a gea... | 05/31/1977 |
| 4005843 | Hanging display rotator A rotator for a hanging display such as a mobile, hanging plant or the like having a self-contained power supply. The apparatus comprises a cylinder for containing flashlight batteries adjacent one another and for containing motor means to drive a geared ... | 02/01/1977 |
| 3991884 | Article biasing display rod A display arrangement for articles suspended from hanging devices includes a rod-like horizontal support having a plurality of longitudinally spaced, slot-like channels formed on both the upper and lower surfaces of an elongated rigid rod or pole. The slo... | 11/16/1976 |
