Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8151654 | Sensor pad for controlling airbag deployment and associated support A sensor pad for controlling the deployment of an automobile airbag. Weight sensing pad 10 is used in the seat 54 of an automobile, (not illustrated), to detect the presence of an occupant on the seat. Weight sensing pad 10 is used in conjunctio... | 04/10/2012 |
| 7313975 | Apparatus and method for measuring tension in guy wires An apparatus for measuring tension in guy wire systems wherein the lower end of the guy wire has a thimble adjoined by a connection pin to a yoke or clevis of a turnbuckle shackle bolt connected to an earth anchor. A block assembly is removably received beneath the ... | 01/01/2008 |
| 7263895 | Strain detector and method of manufacturing the same A fluid pressure sensor (1) for measuring the pressure of a fluid comprises a diaphragm portion (12) which is a strain generating body, a silicon oxide film (21) as an insulating film, and a strain gauge (20) made of crystalline silicon, ... | 09/04/2007 |
| 7188536 | Fluid-filled seat bladder having integral interface panel An elastomeric seat bladder has upper and lower sheets of peripherally welded elastomeric material, and at least one of the upper and lower sheets of elastomeric material is sufficiently thick to effectively serve as an integral interface panel. In a first configura... | 03/13/2007 |
| 7162932 | Method for determining the modulus of elasticity of paper In a method for determining the radial modulus of elasticity of paper or a corresponding web-like material that can be reeled or wound on a reel, the connection between the force and deflection of a material arranged in layers is measured. The measurements of force ... | 01/16/2007 |
| 7159471 | Capacitive load cell apparatus having silicone-impregnated foam dielectric pads A capacitive load cell includes upper and lower capacitor plates and an intermediate array of dielectric pads formed of silicone-impregnated open-cell urethane foam (i.e., gel pads). The silicone essentially displaces air that would otherwise be trapped in the foam,... | 01/09/2007 |
| 7144423 | Intraocular multifocal lens In accordance with the present invention, a multifocal intraocular lens provides greater or lesser refraction in relation to the position of the head and eyes of a user. A multifocal intraocular lens body for insertion into a fluid-filled enucleated natural lens cap... | 12/05/2006 |
| 6857318 | Method for the non-invasive measurement of an internal pressure The invention relates to a method for the non-invasive measurement of the internal pressure of elastic vessels, according to which a restoring force is detected on the outer surface of the vessel and the internal pressure is determined from the measured force and th... | 02/22/2005 |
| 6627825 | Hydraulic weighing apparatus and method A hydraulic lifting and weighing system particularly for refuse collection vehicles and the like and includes means for dynamically weighing garbage. The system includes a hydraulic actuator operable to move a lifting arm and takes two measurements of the... | 09/30/2003 |
| 5714693 | Dynamic sensor There are dynamic sensors whose plunger is seated in the center of at least one diaphragm. In certain instances of use it is not possible to protect the sensitive diaphragms against inappropriate handling. For example, dynamic sensors are employed in the ... | 02/03/1998 |
| 5052233 | Method and apparatus for measurement of web tension In a method and apparatus for measuring web tension, the tension of a moving web is measured by locating close to the web (14) a gauging bar (1), which has its outer surface curved in the machine direction of the web (14) and carries pressure measurement ... | 10/01/1991 |
| 4989461 | Web tension meter and web tension controller A simply constructed web tension meter is of reduced dimensions capable of preventing an object material from being displaced during a web tension measuring operation. The meter consists of a hollow body provided with an inlet port to which a fluid supply... | 02/05/1991 |
| 4747314 | Racket tester A racket tester includes a flat plate, a support, a knob attached with a screw rod, an pneumatic cylinder including a piston and a pressure gauge, a base, a ring, an indicia marking, a round rod, a stand, and a weighing unit. By properly associating the a... | 05/31/1988 |
| 4711133 | Non-contact web tension meter A web tension meter, particularly suited for measuring the tension in moving webs, e.g. paper in paper machines or a winding machine. The meter is based on the principle of supplying pressurized air through a passage (4) and a passage (11) to an outwardly... | 12/08/1987 |
| 4690380 | Sheave assembly with multiple pulleys used to measure cable angle Disclosed is a counter-balanced sheave assembly for supporting a cable comprising a plurality of sheaves mounted in an arcuate path on a support frame; counter-balancing weights positioned above the support frame and rigidly connected thereto; and a suspe... | 09/01/1987 |
| 4534228 | Wireline tension gage A tension gage for ready mounting upon a wireline between its load and free ends and adapted to provide measurements of tension conditions exerted upon the wireline. The tension gage has a body with a central post to engage the wireline in a saddle mount ... | 08/13/1985 |
| 4498345 | Method for measuring saw blade flexure A system for measuring the flexure of a saw blade in situ includes in one embodiment a non-contact displacement sensor and means for directing a fluid flow at the blade adjacent the sensor. The deflection of the blade by the fluid flow is detected by the ... | 02/12/1985 |
| 4480487 | Device for testing the tension of a driving belt during operation A loading mechanism which may be moved relative to a free belt strand is provided with a measuring roller which is driven by the belt upon contact and furnished with pulse markers, and which, together with a pulse transducer sets to zero a device measurin... | 11/06/1984 |
| 4425809 | Measuring of tension and moments in a thin flexible tape A device, and method of using such a device, for measuring tension in a thin flexible tape by guiding the tape along a curved path between two parallel curved guides, supplying pressurized gaseous medium to each side of the tape, and measuring the differe... | 01/17/1984 |
| 4301687 | Pneumatic tension sensor A tension sensor is placed within a fluid bearing supporting a flexible tape at least partially wrapped around the periphery thereof. The bearing includes a source of pressurized fluid, such as air, and a plurality of metered orifii for admitting fluid in... | 11/24/1981 |
| 4116054 | Apparatus for measuring the combined resistance to displacement of strings affixed in a racket head Apparatus for measuring the spring rate of the total string plane of a racket. A frame is provided for positioning the racket head. The frame supports a member which is movable towards the strings in a direction normal to its plane. A measuring device is ... | 09/26/1978 |
| 4106330 | Tension sensor A device for measuring tension exerted upon a thin, flexible, elongated, plastic bubble. The device utilizes a cylindrical air-bearing and a flow of air to concentrically and symmetrically deflect a portion of the bubble. By measuring the static pressure ... | 08/15/1978 |
| 4098115 | Yarn tension measuring device Yarn tension measuring device for the measurement of small yarn tensions at high yarn speed consisting of a measuring head with three guide elements comprising air cushioned runners and having very low moments of inertia, which does not at all or only ver... | 07/04/1978 |
| 4077256 | Stringed racket face tension measuring device A rounded abutment member is mounted for reciprocative sliding movement in the normal direction with respect to the center of the face of a stringed racket, and hydraulic means is provided for automatically measuring the pressure required for the movement... | 03/07/1978 |
| 4067234 | Tension transducer A tension transducer for measuring threadline tension in running lengths of yarn includes a beam over which yarn passes cantilevered to one leg of a U-shaped flexure member. The other leg of the U-shaped member is associated with a strain gage linked inte... | 01/10/1978 |
| 4041779 | Pneumatic tension gauge A gauge for measuring or monitoring the tension in a running thread comprises three rolls arranged such that a thread running under tension in driving engagement with the three rolls exerts a radial force on the middle reaction roll which includes a pneum... | 08/16/1977 |
| 4004459 | Combination strip contacting device for use in a rolling mill A strip contacting device used between stands of a rolling mill for simultaneously performing combined modes of operation, such as a shapemeter/looper or a shapemeter/tensiometer. It consists of a frame with a pivotal arm connected to a piston cylinder as... | 01/25/1977 |
| 3999428 | Process and apparatus for continuously measuring the value of the tension in a filament being displaced from one point to another A process and apparatus for continuously measuring the tension of a filament being displaced from one point to another comprising applying a lateral pressure to the filament to displace it from its trajectory and measuring of variations of the counter-pre... | 12/28/1976 |
