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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 7287420 | Method of measuring properties of interfacial adhesion of medical device coatings A method for measuring toughness of interfacial adhesion including applying a normal force with a probe to a surface of a coating joined to a major surface of a substrate of a medical device, wherein the surface is substantially parallel to the major surface, and ap... | 10/30/2007 |
| 7287418 | Method of measuring interfacial adhesion properties of electronic structures A method for measuring toughness of interfacial adhesion including applying a normal force with a probe to a surface of a coating joined to a major surface of a substrate of an electronic structure, wherein the surface is substantially parallel to the major surface,... | 10/30/2007 |
| 7287419 | Method of measuring interfacial adhesion properties of stents A method for measuring toughness of interfacial adhesion including applying a normal force with a probe to a surface of a coating joined to a major surface of a substrate of a medical stent, wherein the surface is substantially parallel to the major surface, and app... | 10/30/2007 |
| 7260509 | Method for estimating changes in product life resulting from HALT using quadratic acceleration model A method provides early estimation of product life using accelerated stress testing data. In an embodiment, data measured from a product operating in a first, high-stress environment is used to predict how long the product will operate in a second, normal operating ... | 08/21/2007 |
| 7204152 | Apparatus and method for fatigue testing A method of simulating life of a rotor blade mounting feature mounted in a complementary rotor disc mounting feature comprises the steps of providing two specimen mounting features (37) each having portions defining pressure faces matching in profile respecti... | 04/17/2007 |
| 7204153 | Apparatus and a method for testing attachment features of components An apparatus (10) for testing attachment features (26,28,30,32) of components (12,14) comprises a first member (16) having a first end (18), a second end (20), a first edge (22) and a second edge (24). The firs... | 04/17/2007 |
| 7028555 | Apparatus and method for testing tire liner surface adhesion capability Apparatus and method for measuring adhesion capability in a tire liner, the apparatus including a film strip attaching to the tire liner and having a through opening and an attachment interface distanced from the opening; an adhesive backed cover member attaching to... | 04/18/2006 |
| 6945097 | Characteristic strain and fracture resistance for scratch independently of indenter geometry The invention involves an apparatus and method for calculating characteristics of materials, such as equivalent strain, using an indenter where the method used is independent of indenter geometry. The method includes performing a scratch test to calculate the strain... | 09/20/2005 |
| 6848321 | Bond strength measurement system using shock loads A system and method for non-destructively testing the strength of bonded joints, particularly a bonded joint between two composite components, is provided. The method generally includes activating a source of rapid surface pressure application against a bonded assem... | 02/01/2005 |
| 6792812 | Method and apparatus for layered structure breaking strength estimation Method for layered structure breaking strength estimation in which an edge of a cutting blade is inserted into an upper layer of the structure and the cutting blade is moved substantially in parallel with an interface between the upper layer and a lower layer of the... | 09/21/2004 |
| 6564648 | Method and apparatus for inspecting solder balls on ball grid array package A method and art apparatus are proposed for inspecting solder balls on a BGA (Ball Grid Array) package, which are capable of rejecting defectively-bonded solder balls while allowing properly-bonded ones to pass therethrough. The proposed method and appara... | 05/20/2003 |
| 6532825 | Fatigue damage detection sensor for structural materials and mounting method thereof Focusing on the application of a predetermined relationship between the length of a fatigue damage detection sensor having a width of a specified shape and a required sensitivity or sensing accuracy (crack propagation rate), the present invention provides... | 03/18/2003 |
| 5753823 | Rubber substrate shear lap-joint testing fixture A back-to-back, single lap-joint test fixture and method provides for uniform shear strength determination in a lap-joint area at an adhesive bond plane between a low-modulus rubber-like elastic material substrate and a stiff panel both defining a single ... | 05/19/1998 |
| 5705752 | Rubber substrate shear lap-joint testing fixture and method A back-to-back, single lap-joint test fixture and method provides for uniform shear strength determination in a lap-joint area at an adhesive bond plane between a low-modulus rubber-like elastic material substrate and a stiff panel both defining a single ... | 01/06/1998 |
| 5696327 | Method and apparatus for separating a thin film from a substrate An apparatus and method for separating a thin film from a substrate, the thin film having a surface with a selected width, includes an indenter for applying a force to the surface of the thin film that is substantially equal along the selected width. The ... | 12/09/1997 |
| 5394754 | Apparatus for testing a hem flange and method for same A test apparatus for testing hem flanges that join automotive body panels is provided. This testing apparatus operates by engaging a hook member with a first body panel such that the first body panel is maintained in a held relationship with respect to th... | 03/07/1995 |
| 5239873 | Flexible seal removal resistance tester A method and apparatus for testing the force required to remove flexible seals from objects such as product cups is disclosed. The object, e.g., cup is held so that the seal defines a substantially horizontal plane and a portion of the flexible seal is at... | 08/31/1993 |
| 4916954 | Fatigue testing apparatus Apparatus is provided for obtaining a single crack in fatigue loading which emanates from a predetermined starting notch in a test specimen. This crack propagates in a direction in line with that of the applied Mode II load. The loading may be performed e... | 04/17/1990 |
| 4885941 | Bi-axial geomaterial test system A bi-axial compression test apparatus for geomaterial (soil, etc.) samples that is designed to allow free shear band formation and provide measurements of the stress displacement characteristics of the failure zone. A geomaterial sample formed into a spec... | 12/12/1989 |
| 4864866 | Mechanical property testing machine In accordance with the present invention, a low in weight, portable, mechanical property testing machine is provided in which no special testing machine foundation is required, and a standard power supply may be used. The applied load to test the specimen... | 09/12/1989 |
| 4825700 | Bi-axial geomaterial test system A bi-axial compression test apparatus for geomaterial (soil, etc.) samples that is designed to allow free shear band formation and provide measurements of the stress displacement characteristics of the failure zone. A geomaterial sample formed into a spec... | 05/02/1989 |
| 4819488 | Apparatus for testing the resistance to cleavage of cardboard tubes An apparatus for testing the resistance to cleavage of cardboard tubes which have previously been cut into test pieces which includes a key mandrel which is mounted free to rotate, at least one sleeve for each test piece having a different outer diameter,... | 04/11/1989 |
| 4802366 | Apparatus and process for impact testing of plastics An impact testing apparatus and process are provided. The apparatus comprises a thickness verifier to measure the thickness of each specimen. The apparatus further comprises a notcher and a notch verifier which are operative to first cut notches in a test... | 02/07/1989 |
| 4557147 | Bore hole rock shear tester and method for using same The bore hole rock shear testing device of the present invention comprises a case assembly having a longitudinal axis, a driving block, at least one wedge member, and a restraint member. The wedge member is positioned between the restraint member and the ... | 12/10/1985 |
| 4539851 | Soil and rock shear tester A device for determining the shear strength of rock and soil is disclosed. The device includes means for supporting the device within a borehole, a primary shaft, a plurality of shearing units slidably attached to the shaft having shear heads which are mo... | 09/10/1985 |
| 4480481 | Means and method for soil testing An inexpensive device which is easily operated to accurately measure the Coulomb parameters of the soil. The Coulomb parameters are used in Coulomb's equation to calculate the shearing stresses along a failure surface of the soil. The device includes an i... | 11/06/1984 |
| 4445387 | Compression shear test jig A compression shear test jig for determining the internal shear strength of the weakest plane of a wood fiber or particle panel product. The test jig comprises an upper and lower loading head adapted to be used in conjunction with a universal testing mach... | 05/01/1984 |
| 4164140 | Method and apparatus for measuring material properties related to strength Material properties related to strength are measured, using a force measuring device in cooperation with a testing device which is placed in contact with the material being measured while the material being measured is in a molten state, the testing devic... | 08/14/1979 |
| 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 |
| 4075885 | Rock borehole shear tester An expansible shear head device within a pulling cradle is lowered into a bore hole; and the device is expanded hydraulically to exert a predetermined normal pressure on the side walls of the bore hole. The pressure plates of the device are ribbed for per... | 02/28/1978 |
