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3747415 |
METHOD AND APPARATUS FOR MEASURING ABSOLUTE DENSITIES
Disclosed herein is a method and an apparatus for measuring the absolute densities of fluids. The apparatus includes a sample cup and a sealing cap with a valve therein through which the cup can be...
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3736793 |
CARTRIDGE FLASH HOLE INSPECTION APPARATUS
An apparatus for inspecting the number and capacity of vent or flash holes in a cartridge case having an optical tester to count the vent holes and pass a case upon detection of a minimum number of...
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3720870 |
APPARATUS FOR DETERMINING THE PERMEABILITY OF A NON-MAGNETIC MEDIUM
A plurality of non-ferromagnetic bodies having a poor conductivity and different magnetic permeabilities are positioned in a gap formed in a magnetic circuit biased by a DC magnetic flux. The...
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3720095 |
METHOD OF TESTING CIGARETTE PAPER
In a cigarette making system the porosity of the paper web forming the wrapper of the cigarettes is tested, for example by means of a pneumatic test device, and a signal thus obtained is fed to a...
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3718434 |
APPARATUS AND METHOD FOR DETECTING GASEOUS CONTAMINANTS
Method of detecting gaseous contaminants by monitoring the rate of diffusion of a given gas through a selectively permeable metallic surface which is reversibly poisoned by the contaminants....
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3712114 |
DUST BAG QUALITY TESTING SYSTEM
This invention is concerned with the testing, while in use, of the plurality of filtering elements in an air filtration system. The system involves an air inlet chamber separated from an air outlet...
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3709028 |
CIGARETTE INSPECTION SYSTEMS
A cigarette testing system includes a wrapper tester for detecting leaks in the wrappers of the cigarettes, means operated by the wrapper tester for ejecting faulty cigarettes, and means for...
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3707870 |
APPARATUS FOR AUTOMATIC AND CONTINUOUS PLOTTING OF ABSORPTION-DESORPTION ISOTHERMS EMPLOYED FOR DETERMINING THE MICROSTRUCTURE OF POROUS BODIES
The apparatus essentially comprises a variable-volume enclosure, a pressure transducer in communication with said enclosure, a vacuum line, at least one pipe for the admission of adsorbable gases...
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3696666 |
DUST LEAK DETECTOR FOR AIR CLEANER SYSTEMS
Apparatus and method is disclosed for continuously sampling, at a point downstream of the air cleaner, the normally clean air entering an engine to produce a signal indicating the cleanliness of...
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3693406 |
METHOD FOR INSPECTING FILTERS
Method and apparatus are described for washing hollow cylindrical engine air cleaners or filter elements on inside and outside surfaces. After the washing operation and before drying the filters...
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3690149 |
ELECTROPNEUMATIC CIGARETTE INSPECTION
Cigarettes that are to be tested for defects are fed in succession, side by side, and equally interspaced, on a transfer means driven continuously and transversely to the cigarettes to temporarily...
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3683673 |
NON-DESTRUCTIVE TEST APPARATUS AND METHOD FOR GREASE PACKED BEARINGS
A nondestructive test apparatus and method for checking grease packed bearings in which the inner and outer races to be tested are sealed and then low pressure aeriform fluid is directed to the...
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3683674 |
MEASUREMENT OF PORE SIZE AND POROSITY
The force required to drive a liquid out of a capillary is dependent upon the diameter of the capillary as well as the surface tension of the liquid and its contact angle with the material of the...
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3680360 |
TOBACCO LEAF SCANNING DEVICE
A wrapper, prior to being cut to a cigar wrapper shape having a defined configuration, is arbitrarily divided into a plurality of sections, each substantially pneumatically isolated from each...
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3668928 |
NON-DESTRUCTIVE HARDNESS, TESTING OF ARTICLES SUCH AS CIGARETTES
A cigarette is tested for hardness by inserting it into a rubber sleeve which is surrounded by rings. Air is passed through the annuli formed between the cigarette and the rings. The pressure drop...
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3643493 |
MEASURING SPECIFIC SURFACE OF POWDERS
Method and apparatus for measuring the specific surface of pulverized materials successively feeding a predetermined weight of pulverized material to a transparent container. The material is then...
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3638478 |
STRUCTURE FOR SAND TESTING
Automatic structure is disclosed for sequentially testing moisture content and compactability, permeability, and deformation and strength of a sample of foundry sand. The moisture content and...
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3636751 |
RADIAL FLOW CELL
A radial flow cell and associated method for measuring the directional permeability of a porous rock sample. While the sample is constrained in the flow cell, fluid under pressure is forced...
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3604246 |
PERMEABILITY TESTING APPARATUS AND METHOD
Apparatus for measuring the permeability of films by monitoring flowing gas streams contacting surfaces of the film, including a gastight cell consisting of a pair of cuplike sections adapted to...
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3590634 |
INSTRUMENT FOR DETERMINING PERMEATION RATES THROUGH A MEMBRANE
An instrument for determining permeation rates through a membrane having a permeation cell with upstream and downstream compartments arranged to hold a membrane therebetween, a line for...
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3589173 |
SYSTEM AND METHOD FOR MEASURING FILM POROSITY
The porosity of a dry porous film of known weight and specific gravity is determined by spraying the film uniformly with a sorbable liquid which does not cause the dry film to swell. The total...
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3583218 |
VEHICLE AIR FILTER CONDITION INDICATOR
A vertically disposed transparent airflow chamber with its inlet end disposed lowermost and having a lightweight airflow restricting member loosely received therein. The airflow restricting member...
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3580051 |
METHOD FOR LEAK TESTING MASKS
A method for leak testing masks by hermetically sealing a flowmeter at the outh area of the mask undergoing test and monitoring leakage due to external pressure during mask wearer's breathing...
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3577767 |
FELT PERMEABILITY TESTING APPARATUS
Various permeability characteristics of a sample of felt or other permeable web materials are determined by testing apparatus comprising a pair of interchangeable platens between which the sample...
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3548633 |
METHOD OF EVALUATING MOISTURE BARRIER PROPERTIES OF ENCAPSULATING MATERIALS
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3548635 |
METHOD OF AND APPARATUS FOR TESTING DYNAMIC PERMEABILITY AND HYDRODYNAMIC SURFACE DRAINAGE OF MATERIALS
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3548634 |
PERMEABILITY CELL
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3546928 |
PENETRATION ANALYZER
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3525251 |
APPARATUS FOR MEASURING PORE DIMENSION AND DISTRIBUTION IN POROUS MATERIALS
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3524341 |
PORE DETERMINATION OF A POROUS MEMBER
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3505856 |
METHODS OF MEASURING THE PERMEABILITY OF PARTICULATE MATERIAL
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3505876 |
FILTER EVALUATION EQUIPMENT
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3504527 |
APPARATUS FOR MEASURING THE MOISTURE VAPOR PERMEABILITY OF A SAMPLE SHEET MATERIAL
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3501944 |
APPARATUS FOR MEASURING PORE SIZE AND PORE VOLUME
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3499315 |
CONTAMINATION DETERMINATION IN A FLUID SYSTEM
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3498110 |
METHOD AND APPARATUS FOR MEASURING THE GAS AND VAPOR PERMEABILITY OF FILMS
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3485357 |
CIGARETTE LOOSE END DETECTOR-REJECTOR MECHANISM
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3479884 |
METHOD AND APPARATUS FOR MEASURING SPECIFIC SURFACE AREA OF POWDERS
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3478601 |
FILTER TEST APPARATUS
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3466925 |
METHOD AND APPARATUS FOR MEASURING POROSITY
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3457791 |
SURFACE AREA MEASUREMENT OF STANDARD LENGTH SAMPLE OF FINELY DIVIDED SOLIDS
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3455146 |
METHOD AND APPARATUS FOR DETERMINING FILTRABILITY TIME
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3455147 |
METHOD AND MEANS FOR MEASURING THE FREE ENERGY OF SOLVENTS
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3439536 |
SENSING DEVICE
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3438245 |
DEVICE FOR MEASUREMENT OF PORE SIZE AND PORE VOLUME
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3435663 |
DYNAMIC FILTER PRESS
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3433056 |
PERMEABILITY CELL
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3431772 |
METHOD AND APPARATUS FOR DETERMINING THE PERMEABILITY OF A MATERIAL
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3420093 |
METHOD AND APPARATUS FOR TESTING CORE PERMEABILITY
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3420094 |
APPARATUS FOR MEASURING PERMEABILITY
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