Abstract: The invention pertains to a damping valve(1), especially for hydraulic media in damping systems, such as shock or vibration damping systems and the like, with at least one throttling channel (38) equipped with a valve element for damping adjustment. The valve element at least partially covers the outlet mouth (40) of the throttling channel (38) and is designed as a leaf-spring element (42) clamped at one end, while the damping adjustment is accomplished by varying the length (1) of the free end of the leaf of the leaf-spring element (42).

Abstract: An improved device for providing EMI/RFI shielding for a joint is disclosed comprising a compressible, resilient sealing element and a conductive shielding element bonded to the sealing element and positioned such that the shielding element provides a direct electrical contact across the joint. The disclosed invention further provides a cabinet which effectively utilizes such a device. The disclosed invention also includes an improved cabinet construction which minimizes the paths by which moisture and debris may enter the cabinet interior, while providing a cabinet which is transportable without violating the integrity of the cabinet structure.

Abstract: A walk-behind power driven lawn mower having a transverse handlebar rearwardly of the mower, a pair of hand operated control levers located forwardly of and adjacent to the handlebar and extending generally parallel thereto for establishing the drive and applying the brakes to a pair of driven wheels of the lawn mower. A park brake lever is mounted between said control levers for simultaneously applying the brakes to the driven wheels through a connection between the park brake lever and the control levers. A releasable latch mechanism releasably holds the park brake lever in the braking position. Another control lever in the form of a bail is mounted to be pivoted rearwardly relative to the handlebar for engaging idler pulleys when the transmission is shifted to provide reverse movement. Each drive to the wheels includes a drive pulley and belt and another idler pulley for engaging the belt to establish drive when the transmission is shifted for forward movement.

Abstract: A tool guide temporarily attachable to vehicle body panels or other surfaces to provide a straight edge, and contour sander for use in connection with a straight edge. The tool guide includes an elongated member having a longitudinal edge surface for guiding a work tool, and suction cups mounted on tongues extending laterally from the body of the tool guide. The tongues are angled in relation to the body, so that the tongues exert a cantilever force urging the tool guide against a surface when the tongues are secured against the suction cups. The contour sander includes a number of flat blades mounted side-by-side and each having a longitudinal edge for contacting a contoured work surface. A clamp holds the blades in parallel juxtaposition and selectively loosens the blades for conforming contact with the contour. Finger grips are formed at the ends of the blades, allowing the operator to raise or lower any particular blade and obtain a sharper or more accurate reproduction of contour if desired.

Abstract: Pivot and guide rod assembly for bi-fold door includes plastic sleeve for mounting in door channel and supporting a pivot rod. A spring is arranged to urge the pivot rod outwardly from the sleeve, a tang latch being provided on the sleeve for retaining the sleeve in the channel, and a groove defined on the pivot rod to engage an inwardly swedged portion of the plastic sleeve to retain the pivot rod in a retracted position during shipping and mounting of the door.

Abstract: The assembly includes a plurality of diodes spaced circumferentially about the axis of rotation of the assembly, two spaced apart outer diode mounting members and a plurality of radially inner diode mounting elements. A spacer member is provided which locates the mounting elements in recesses therein. Selected mounting elements are interconnected by linking plates to form a sub-assembly which is received within a housing.

Abstract: A clip is disclosed for mounting a flush plate such as a mounting tray or the like within a corresponding opening in an extruded frame member such as a transom bar, door frame, or the like. The clip includes a pair of tongue members held together in spaced apart relation by an interconnecting bridge member. The tongue members are inserted into corresponding channels defined in the extruded frame member adjacent the opening, and when the clip is thus mounted to the frame member, a portion of the clip extends into the opening. In the disclosed embodiment, the bridge member is located to abut the end of the extruded frame member to limit the depth to which the clip is inserted into the channels. With the clips thus mounted, the flush plate is fastened to the clips to secure the flush plate to the extruded frame member. The clip is less expensive to produce than two corresponding single tongued clips and requires only one installation step rather than two.

Abstract: An apparatus for adjusting the length of a chain path having cookie or cracker divider assemblies attached thereto. A continuous series of edge-stacked cookies or crackers may be divided into groups by the divider assemblies. Adjustment of slide bars in the path of the roller chain allow for adjustment of the length of chain intermediate the slide bars. Also provided is an articulating finger configured to work in cooperation with a vibrating chute.

Abstract: A transistor failure selection circuit and structure for ease of maintenance. The disclosed circuit and structure reduce maintenance time and costs for a welding station. The circuit biases a specific selected transistor at a different operating point than any other transistor in a bank of transistors. Upon an overcurrent condition which exceeds the design current rating of the welding station the circuit causes the specific selected transistor to fail in preference to the failure of any other transistor located in the transistor bank. The selected transistor is mounted in a readily accessible location of the welding station and is easily replaced in the event of failure. This eliminates the need for the operator to remove the entire bank of transistors and/or other components or circuits typically found in a welding station in order to access and replace the failed transistor.

Abstract: A welding station for welding thin-walled copper-nickel pipe. An electronic welding station (10) has an output circuit (13) which provides arc welding power having the arc characteristics specified by a weld parameter selection circuit (12). A welding torch and feeder assembly (11) has a controller (20) which is responsive to a predetermined event, such as the passage of time since the start of the arc, or the average temperature of the pipe (25) as indicated by two temperature-measuring devices (30, 32). The controller (20) adjusts the wire feed speed, the pulse frequency, the pulse width, the welding voltage, the welding current and/or other parameters so as to cause the arc to have the parameters most desired for welding copper-nickel pipe. The present invention provides for a hotter arc for starting the welding operation, thereby obtaining good penetration and bonding, and a cooler arc for continuing the welding operation, thereby preventing burn-through of the pipe (25).

Abstract: A dual mode electrophotographic print engine. A voltage controller (25) provides operating voltage to a scorotron (27), which applies a charge to a photoreceptive medium. In a first mode a screen (40) is placed in a first position, out of the optical path between the image focusing device and the photoreceptive medium (45). This produces full exposure of the photoreceptive medium (45) to the focused image. This produces a latent image on the photoreceptive medium. Toner is then applied to the latent image to produce a developed image. In the second mode of operation, for producing half-tone copies, the screen (40) is inserted into the optical path. This reduces the exposure of the photoreceptive medium (45). To compensate for the reduced exposure the voltage controller (25) provides a second, lower voltage to the scorotron. This lower voltage compensates for the reduced exposure time so as to produce a high quality latent image. Toner is then applied to the latent image to produce a developed image.

Abstract: An apparatus and method are disclosed for obtaining adsorption data to be used for surface area and pore volume analysis. The apparatus and method utilize the differential pressures between a pair of dosing systems to indicate the amount of gas adsorbed by a sample. The system doses a sample chamber and a null chamber from essentially equal volumes of gas, and causes the chambers to be dosed such that any pressure difference between them, caused by adsorption, is eliminated. The resulting differential pressure between the essentially equal volumes of gas then indicates the amount of gas adsorbed by the sample. The system may be operated to dose in equilibrated increments or in a scanning mode in which adsorbate gas is continuously leaked into the sample chamber. A feedback circuit then controls dosing into the null chamber to eliminate the pressure difference caused by adsorption onto the sample surface.

Abstract: A locking arrangement with built-in alarm mechanism utilizing a contact between portions of a split bolt arrangement as the prime security measure is described. Correct sequencing of both the locking and unlocking actions is required to prevent alarm. Two realizations are described: a self-contained unit for building doors; and an automobile unit with central alarm, alarm sensors for ignition and other locations subject to tampering (hood, trunk, battery), and a set resistance method to prevent disarming by either circuit opening or shorting techniques.

Abstract: An algaecide and fungicide containing boron derivatives which are added to standing water systems such as swimming pools, drinking water resevoirs and cooling towers. The boron derivative algaecide and fungicide is effective in killing and repressing unwanted algal and fungal growth.

Abstract: A disposable enclosed container is provided which is loaded with product from an end and accessed through a hooded top for dispensing of product. An end construction comprising a leading minor flap panel, a trailing minor flap panel, an inner major flap panel, an intermediate minor flap panel, and an outer major flap panel allows a blank to be assembled into a sleeve for loading of product and to be subsequently assembled into a container which may be opened into a tray and hooded top for dispensing of product. An apparatus for erecting and loading the sleeve, and then assembling the ends of the sleeve to form the container is also disclosed.

Abstract: A case blank feed device used in case packaging assemblies is disclosed. The device employs a pair of parallel and spaced apart bars rotatably mounted at the bottom of a case blank container having a stack of case blanks. As the bottom blank is pulled from the bottom of the container, the roller bars decrease the friction associated with the weight of the stack. In addition, the blank feed device concentrates the vacuum force along the blank edges located parallel and proximate to the roller bars so that deflection of the blank is minimized.

Abstract: A protective sleeve for a hypodermic needle completely overlies the needle when in a needle protection position and also overlies a needle support and at least part of a syringe to which the needle support is attached. The protective sleeve is moved from the needle protecting position to a needle injection position solely by axial movement of the protective sleeve. The protective sleeve is releasably retained in either of its positions through cooperating retaining elements on the protective sleeve and the needle support or the syringe.

Abstract: A device for tissue sampling by thick needle punctuation including a needle assembly including a hollow first needle and second needle extending through the hollow first needle. The needle assembly is contained in a housing having an opening through which the needles extend. Compressed springs in the housing are caused to expand to urge the needles away from the housing during the sampling of tissue. A rod is provided extending from the housing to simultaneously place the springs in a compressed condition.