Abstract: An improved drawer slide having a deformable brake to hold the slide in any desired degree of extension. The slide is of the type which has an outer slide member with two inwardly-facing ball-bearing supporting grooves, an inner slide member with two outwardly-facing ball-bearing supporting grooves, a brake block is held on the outer slide member and is deformed so that it contacts the inner slide member when it is desired to lock the slide in position.

Abstract: In an electron beam apparatus such as a transmission electron microscope, a specimen holder device which comprises a specimen holder member and a holding rod connected thereto is withdrawably inserted in a pole-gap defined between upper and lower poles of an objective lens of the electron beam apparatus. An opening having a greater diameter than that of the pole end face is formed in the specimen holding member at a center portion for receiving therein a specimen mesh of a reduced thickness. A recess is formed in the specimen holding member at that portion which is caused to pass between the upper and lower magnetic poles upon insertion and withdrawal of the specimen to and from the interpole gap so that a region resulting from the formation of the recess has a reduced thickness as compared with the remaining region of the specimen holder member. Inter-pole gap of the objective lens is thus reduced to increase resolving power thereof.

Abstract: A print head carriage assembly having a precision, linear, ball-bearing slide mounted parallel to the platen. The device has a carriage which is supported by the inner member of the slide. The linear movement of the carriage is also controlled by a second guide which is likewise mounted parallel to the platen.

Abstract: A dual-stage band pass-band reject filter with feedback. Two state variable band pass filters with identical topology are cascaded as first and second stages. Each stage employs two inverting adders and two inverting integrators in a state variable topology, and each provides a band pass output and a band reject output. Both stages are selectively tuned to the same fundamental frequency. The filter output may be switched from a band pass to a band reject mode. In the band reject mode decreased attenuation of harmonics of the fundamental frequency is achieved by providing a predetermined amount of feedback from either the band reject output or band pass output of the second stage to the input of a respective one of the two adders of the first stage.

Abstract: A precision ball bearing slide mechanism having a removable inner member. The slide is a three part slide having an outer, an intermediate and an inner slide member. A latch which holds the intermediate slide member in a locked out position is disclosed herein. This latch is released when the inner slide member is retracted.

Abstract: A precision ball bearing slide mechanism having a removable inner member. One version of the invention utilizes an inner member which also holds the inner member in a locked out extended position. The inner member is stopped and locked by the engagement of an elongated latch with a stop. By moving the latch the inner member may be removed from the body of the slide. Latches which lock the inner member in an extended configuration and permit retraction only upon movement of the latch are disclosed as are configurations which permit the slide to be readily retracted. Also disclosed is a version of the latch which permits the slide to be retracted upon exertion of an inward force on the slide.

Abstract: A tamper-proof and wear resistant identification card having a support layer, a strip of magnetic tape for containing encoded information, transparent layers covering the front and rear surfaces of the support layer and a screen of optically-readable encoded information on a surface of one of the transparent layers.

Abstract: A rotary cutting scissors for microsurgery is disclosed. The rotary scissors instrument comprises a pair of scissor blades mounted on an end of a shaft assembly for snipping away soft tissue during surgery wherein the other end of the shaft assembly is mounted within a spring-loaded rongeur handle that is adapted to be comfortably grasped by the cupped hand of a user. When the handle is squeezed, a helical drive mechanism housed in an upper portion of the handle is actuated to rotate one of the scissor blades against the other so as to cause the desired snipping action.The instrument further comprises an internal fiber-optic light source that emits a bright light near the scissor blades during surgery to illuminate the area being operated on so that the surgeon can see precisely what he is dealing with and thereby avoid mistakes. This light constantly illuminates the line of cut by moving in tandem with the instrument during surgery.

Abstract: A method for breaking or severing a rod of brittle fiber material, such as glass optical fiber, to produce a mirror end surface thereon, normal to its longitudinal axis and free of imperfection, is described wherein a linear section of the fiber, usually stripped of its outer protective coating or cladding, is supported and held at and between spaced zones and sequentially subjected to gradually increasing axial tension while its exterior surface is scored by a rotatable cutter or scoring wheel moving in and along a plane normal to the longitudinal axis of said section to effect its separation or cleavage along said plane.

Abstract: A device for exercising a living hinge of an article and/or closing a lid of a cap while the article or cap is in a mold for forming the article or cap. The device includes a finger which slides between the mold sections, and, in the process, engages a portion of the article or the lid, rotates the portion or lid about the hinge, and in the case of the cap, snaps the lid shut. In an alternate preferred embodiment, when the finger reaches predetermined point it pivots toward the female mold section to snap the lid tightly shut.

Abstract: A device for exercising a living hinge of an article and/or closing a lid of a cap while the article or cap is in a mold for forming the article or cap. The device includes a finger which slides between the mold sections, and, in the process, engages a portion of the article or the lid, rotates the portion or lid about the hinge, and in the case of the cap, snaps the lid shut. In an alternate preferred embodiment, when the finger reaches a predetermined point it pivots toward the female mold section to snap the lid tightly shut.

Abstract: A drawer-slide-suspension system adapted for use with comparatively wide suspended drawers or like moving objects, whereby a wide drawer is slidable within a cabinet enclosure without binding or racking when a closing or opening force is applied along any longitudinal portion of the drawer, the system comprising two oppositely disposed slide-suspension mechanisms, each including two slide units, one defined as being a lower substantially stationary cabinet unit, the other being an upper or movable drawer-mounted unit, and having an intermediate member interconnected between the upper and lower units, and further including a synchronizing belt attached between the upper and lower units, a geared wheel being mounted to the rear of each intermediate member, the wheels being operably connected by a longitudinal transverse shaft and arranged to engage respective linear gear racks attached to each stationary unit.

Abstract: Apparatus for rotating an annular or ring shape tool such as a saw blade or grinding wheel. The tool is rotated by a power driven drive roller acting on a face of the ting tool. A rigid arm supports guide rollers which in turn support the tool. The guide rollers have grooves that engage the inner periphery of the ring tool. The inner periphery of the ring tool may define a tapered tongue with a rounded edge that fits into complimentary shaped grooves in the guide rollers. Fixed and movable U-shape guards are provided to shield substantially all of the ring tool.

Abstract: Substantially flat thin foil electrical components, e.g. thin foil resistors, are disclosed wherein a thin metallic foil is bonded to an insulating substrate and a circuit path is formed on the foil by photographic artwork-etching or other techniques. Terminal lands of the circuit are electroplated on the foil connecting leads having paddles or flattened portions formed with a hole or slot therein are soldered to the lands such that the solder extends into the hole or slot. The value of the resistor is finally adjusted by use of a laser beam, at least one bead of rubber is applied on at least a portion of the edges of the substrates, and the resistor is encapsulated.

Abstract: A thin film foil resistor is disclosed wherein a thin metallic foil is bonded to an insulating substrate and a circuit path is formed on the foil by photographic artwork-etching techniques. After the circuit is formed, the structure is subjected to another etching process to reduce the thickness of the foil circuit thereby adjusting the value of the resistor. Terminal lands of the circuit are electroplated and the connecting leads are soldered to the lands. The value of the resistor is finally adjusted by use of a laser beam, and the resistor is encapuslated.

Abstract: A compact portable housing encloses a piezoelectric element which receives short pulses from a pulse generator circuit controlled by a ramping waveform generator circuit so that the element and the adjacent speaker portion of the housing produce a frequency modulated loud sweeping sound. The housing also encloses a detector switch for sensing a disturbance, and the sensitivity of the switch may be adjusted according to the position of the housing. The detector switch actuates a timer circuit which is armed or disarmed by moving a combination code switch having code wheels projecting from the housing.

Abstract: A synchronized traveling carriage assembly comprising at least one slide mechanism held by a end-support cap having alignment pins to firmly hold it in a rigid position. The outer side of the support cap includes support pins so as to be readily acceptable in a cooperating installation. A carriage plate is affixed to the moving slide member whereby various devices may be mounted thereto. The slide comprises an outer slide member which is removably connected to the alignment pin of the support cap, an inner slide member, and a ball-retainer member disposed therebetween having at least two flat strips of friction material coacting with at least one intermediate member formed by an endless belt of friction material--the flat strips being affixed to respective inner and outer slide members and the endless belt being movably mounted to the ball-retainer member for engagement with the flat strips.

Abstract: A thin film foil resistor is disclosed wherein a thin metallic foil is bonded to an insulating substrate and a circuit path is formed on the foil by photographic artwork-etching techniques. After the circuit is formed, the structure is subjected to another etching process to reduce the thickness of the foil circuit thereby adjusting the value of the resistor. Terminal lands of the circuit are electroplated and the connecting leads are soldered to the lands. The value of the resistor is finally adjusted by use of a laser beam, and the resistor is encapsulated.

Abstract: A thin film, cylindrical resistor is disclosed which exhibits non-inductive characteristics and which may be fabricated easily and economically. A cylindrical insulative substrate is provided with electrically conductive termination bands and a thin coating of electrically resistive material over the entire cylindrical surface. The resistive material is then cut along an axial path and along an interrupted spiral path so as to form the resistive material into a serpentine path along the cylindrical substrate. Leads are attached to each end and as the current traverses the length of the cylinder it travels in a serpentine path. The current travels in opposite directions along adjacent parallel portions of the path thereby cancelling out the major portion of inductance.

Abstract: A programmable alternating current switch for connecting an A.C. supply to a load for a controlled fraction of each cycle to thereby control the average power to loads, such as lamps, heaters, motors, etc. A Programmable Unijunction Transistor (PUT) is employed to control the phase angle of the A.C. wave at which a Triac is fired, the Triac continuing to conduct and deliver load current for the remainder of that half-cycle. Coupled between the PUT and the Triac is a Light Activated Silicon Controlled Rectifier (LASCR) and a diode bridge which provides full-wave operation.