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An armor with rollers is provided that enables a user to move in all positions by rolling on a hard and smooth surface while constantly varying his bearing points on the ground.
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| Number | Title | Issue Date |
| 4446726 | Apparatus and method for measuring the filterability of a fluid at low temperatures An apparatus and a method of measuring the filterability of a fluid which includes a cold box having a temperature regulating mechanism connected thereto. Enclosed in the cold box is a filter holder connected between first and second cylinders. The filter... | 05/08/1984 |
| 4443754 | Method for determining minimum lubricating oil-film thickness under operating engine conditions using electrical capacitance This invention relates to a method for determining the minimum oil-film thickness of a lubricating oil composition under engine operating conditions using selected electrical capacitance means wherein a potential relating to the capacitance is developed a... | 04/17/1984 |
| 4369655 | Method of determining the concentration of solid lubricants in drilling fluids A method of determining the concentration of spherical solids used as lubricants in drilling fluids in which the solid lubricant together with other solids of a given particle size are separated from a predetermined volume of the drilling mud, are admixed... | 01/25/1983 |
| 4345202 | Method of detecting soot in engine oil using microwaves To measure the percentage of soot in a diesel engine crankcase oil without any significant influence by oil additives or contaminants which build up in the oil during usage. The relative permittivity of the oil is measured in the microwave region of 8-12 ... | 08/17/1982 |
| 4281536 | Apparatus for testing the contamination of industrial liquids The test apparatus detects pressure changes in a vessel containing a volume of a contaminated industrial liquid and a volume of gas. The apparatus includes a detector having a housing defining a chamber. A pressure transducer having a flexible, pressure-t... | 08/04/1981 |
| 4269604 | Method for the on-site determination of the presence of corrosive material in lubricating oil A method of on-site determination of the presence of corrosive material in lubricating oil, comprising the steps of placing oil in a solvent of selected composition, titrating the resultant sample-solvent mixture with titrants of predetermined concentrati... | 05/26/1981 |
| 4267722 | Adjustable lubrication quality indicator-protector for engines and other machines A device is disclosed for indicating the lubricating quality of a lubricating oil for a machine. The device comprises a frame and a rotatable shaft having a journal for rotation with the shaft. A housing having an internal cavity is mounted to receive the... | 05/19/1981 |
| 4169368 | Adjustable lubrication quality indicator-protector for engines and other machines A device is disclosed for indicating the lubricating quality of a lubricating oil for a machine. The device comprises a frame rotatably mounting a shaft. The rotatable shaft has a journal for rotation with the shaft. A housing having an internal cavity is... | 10/02/1979 |
| 4133200 | Apparatus for testing lubricants Apparatus suitable for the assessment of lubricants for the slides of machine tools, comprises a fixed slide carrier block, a moving slide block, and a drive block moving parallel to the slides at constant speed, under the action of a motor. The drive blo... | 01/09/1979 |
| 4113384 | Viscosity measuring system A method for measuring the viscosity of a lubricant fluid under very high pressures by placing a sample of lubricant containing one or more ruby crystals (~10μm diameter) in a diamond anvil cell illuminated with a point source of visible light radiation,... | 09/12/1978 |
| 4103533 | Impact grease tester Apparatus for testing grease characterized by a base carrying at least two anvils for receiving grease to be tested for impact resistance, two display means surrounding the anvils for displaying any grease splattered therefrom under impact, at least two h... | 08/01/1978 |
| 4082511 | Method for protecting an internal combustion engine by determining the change point of the lubrication oil A new and improved on-site method for protecting an internal combustion engine in the field for maximizing service time by determining the change point of the lubrication oil when the TBN declines to a predetermined level. The on-site method utilizes a ne... | 04/04/1978 |
| 4007629 | Method and apparatus for monitoring oil degradation A method and apparatus for monitoring the degradation of oil, particularly crankcase oil. A first sensor includes creep material positioned under constant stress in thermal contact with the oil to act as an analogue computer as it changes its length in re... | 02/15/1977 |
| 4000656 | Apparatus for designing and testing proper values of parameters relating to supporting hydrodynamically lubricated bearing journals Apparatus for designing and determining parameters for supporting hydrodynamically lubricated bearing journals, wherein a device for applying a load to a shaft is associated with a shaft mounted on bushings carried by ball joints, the shaft and bushings b... | 01/04/1977 |
| 3982422 | Means for measuring the wax content of waxy oil The 50% boiling point, the gravity and the viscosity of waxy oil are sensed by sensors which provide corresponding signals. A computing circuit connected to the sensors provides a signal corresponding to the wax content of the waxy oil in accordance with ... | 09/28/1976 |
| 3968677 | Continuous evaluation of thermal stability of quenching oils Testing apparatus and method for use in evaluating thermal stability of quenching oil wherein a relatively small quantity of the oil contacts a metallic heating element maintained at a temperature between about 1000°-1500°F. The contacting oil comes fro... | 07/13/1976 |
