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| Number | Title | Issue Date |
| 4491014 | Bond testing apparatus An apparatus for measuring the strength of a bond between a lamina and its ubstrate, or the like is shown and described. Air, or some other fluid under pressure, causes a gasket to protrude from a piston to seal the atmosphere from a chamber within the pis... | 01/01/1985 |
| 4413510 | Coating adhesion testing A method of testing the adhesion between a coating and its substrate applies a force to a sample by means of a plunger and supporting ring apparatus. The force is increased laterally while the force and the resulting deflection are measured. When the slop... | 11/08/1983 |
| 4393700 | Process and test specimen for determining the adhesion to glass of interlayers for laminated glass by the tensile shear test Glass laminates used as safety glass consist of several sheets of glass united by adhesive interlayers. The bond strength of such interlayers may be determined in simple manner using a special test specimen by the tensile shear test. The test specimen is ... | 07/19/1983 |
| 4393699 | Pneumatic adhesion tester This tester comprises a fixture which is bonded to a coating or surface, a plate and a membrane which are sealed together along their peripheries. A hole extends through the membrane and at least into the plate for receiving the fixture so that its bond... | 07/19/1983 |
| 4382699 | Laboratory method for testing the effectiveness of release agents for preventing coal from freezing to the sides of coal cars A method of testing additives for the ability to prevent coal particles from freezing and adhering to the sides of coal cars and metal storage devices which comprises the steps of: (a) coating the treatment to be tested on the inside of a small interior d... | 05/10/1983 |
| 4346602 | Apparatus and method for measuring adhesive bond strength An improved apparatus is disclosed for measuring the adhesive bond strength etween two materials. A short, cylindrical specimen (28) having a test surface of one material is attached to a rigid base (12) on which a slide (16) is mounted on preloaded roller... | 08/31/1982 |
| 4297160 | Locking and sealing compositions and methods for their application Thread locking compositions and analogous sealant materials having limited cured strength, and a preferred method for their compounding and application, are disclosed. These are based primarily on alpha cyanoacrylates, i.e. acrylate esters in monomer or l... | 10/27/1981 |
| 4294111 | Portable fluid ink tack tester A manually portable fluid ink tack tester (10) for sampling and testing the tack of printing inks during press runs has two engaged, rotating rolls (25,26) mounted on parallel axes and in rolling contact on the tester frame (15). One (26) is extended outw... | 10/13/1981 |
| 4257265 | Self-stressed mode 1 fracture mechanics test piece Two radial cuts are made in a disc-shaped solid, the wedge (or sector) thereby produced is removed, and the exposed faces of the radial cuts are forced into contact with each other. By bonding (or welding) together the faces of the radial cuts, a self-str... | 03/24/1981 |
| 4253901 | Method of heat sealing employing a hot tack adhesive Normally solid heat-activatable thermoplastic adhesives having improved hot tack strength at heat-seal temperatures are composed essentially of copolymers of ethylene with acrylic acid or methacrylic acid having standard melt flow values from about 1 to a... | 03/03/1981 |
| 4232559 | Method and an apparatus for measuring the bonding power of an adhesive material A method for measuring the bonding power of an adhesive material, particuly a sheet material comprising fibres impregnated with a glue. After having applied against the material the face of a totally reflecting prism the index of refraction of which is l... | 11/11/1980 |
| 4228761 | Method for coating a polymeric article with a thermochromic paint An improved method for indicating the temperature to which a heat-deformable polymeric material coated with a thermochromic paint has been heated is disclosed. The improvement comprises the addition to the thermochromic paint of a non-thermochromic compou... | 10/21/1980 |
| 4194392 | Measuring adhesive force A process for measuring the adhesive power of pressure-sensitive adhesives, especially adhesive tapes or sheets; it is also related to a device for implementing this process. This process consists in causing a ball to fall freely onto the adhesive surface... | 03/25/1980 |
| 4188824 | Coating adherence prospensity testing of metal substrates A method for testing a treated metal substrate toward its propensity to receive and adherently retain a finish coat such as paint or the like; the test is made before the finish coat is applied by applying a strip of adhesive to a specimen treated substra... | 02/19/1980 |
| 4167110 | Devices and processes for determining properties of viscous fluids Testing of rheological properties of a fluid is performed between a pair of members having cooperating faces, each characterized by minute, randomly interspersed land portions and cavity portions. The land portions of each face are planar and are disposed... | 09/11/1979 |
| 4161114 | Method and apparatus for measuring adhesion of particulate materials Apparatus and a method are disclosed for measuring adhesion of particulate materials. A geometric object, such as a steel ball, is immersed in a sample of particulate material which is compacted to a predetermined density. The temperature of the sample is... | 07/17/1979 |
| 4143543 | Mechanical acceleration multiplier for microcircuit bond testing A mechanical acceleration multiplier for testing the bond strength of an adhesive wherein the adhesive to be tested is subjected to a centrifugal force.... | 03/13/1979 |
| 4137761 | Tilting table initial tack test apparatus for adhesive bonds The adhesive bond test apparatus comprises: a U-shaped bracket of aluminum, upported on a table; a tiltable rectangular panel of aluminum pivotally mounted in the U of the bracket for tilting between a horizontal and a vertical position; a sheet adherend m... | 02/06/1979 |
| 4121011 | Polymeric article coated with a thermochromic paint An article comprising a polymeric material and coated with a thermochromic paint. The improvement comprises the addition to the thermochromic paint of a non-thermochromic compound selected from the group consisting of the sulfates, hydrated sulfates and n... | 10/17/1978 |
| 4105583 | Thermochromic paint for use on plastic substrates A thermochromic paint, which changes color when heated to a certain temperature, and which is particularly suited for use on plastic substrates which are subject to oxidative degradation is disclosed. The improvement comprises the addition to the thermoch... | 08/08/1978 |
| 4086554 | Strain gauge A strain gauge adapted to be adhesively mounted on a structural part in a place to be tested which is provided with at least one measuring grid and to the connecting ends of which are soldered measuring lines for conducting the current from the measuring ... | 04/25/1978 |
| 4080825 | Glue bond tester Apparatus to test the strength of a glue bond joint connecting two sheets of paperboard or similar sheet-like material. The apparatus automatically produces the bond, duplicating the production process, and then forces the sheets apart by moving the sheet... | 03/28/1978 |
| 4065964 | Portable machine for testing protective coatings A portable machine for testing protective coatings which have been applied to pipes or the like comprising a portable frame adapted to be hand-held by testing personnel. A pair of elongated arms extend from the portable frame and have pipe shoes on one en... | 01/03/1978 |
| 4055455 | Apparatus for lining and testing container closures Apparatus is disclosed for lining container closures with seals, and for testing the closures. The apparatus includes means for forming an infeed stream of closures and means interacting with the stream for forming closure groups. Conveyor means accept th... | 10/25/1977 |
| 4041806 | Testing cord-to-elastomer adhesion The adhesion of cord or wire to the elastomer, rubber, or rubbery material is measured by exerting forces or loads collinear with the cords or wires such that one of the cords or wires is pulled from between a pair of cords. The three cords are embedded i... | 08/16/1977 |
| 4010640 | Apparatus for measuring the stiffness characteristic of structural adhesives An apparatus for measuring the stiffness characteristic of structural adhesives which encompasses a critically patterned series of sensor points which enables the recording of minute movements of a bonded specimen to which force is applied with exacting p... | 03/08/1977 |
| 4010641 | Apparatus for measuring the stiffness characteristic of structural adhesives An apparatus for measuring the stiffness characteristic of structural adhesives which encompasses a critically patterned series of sensor points which functions cooperatively with a novel mounting mechanism to enable the recording of minute movements of a... | 03/08/1977 |
