摘要:
A clamp assembly secures a first article to a second article. The clamp assembly includes first and second spaced-apart article holders adapted for engaging respective first and second articles. An elongated gear rack interconnects the first and second article holders. A pinion operatively engages the gear rack, and is adapted for moving the first article holder along the gear rack relative to the second article holder. A locking bar has a plurality of spaced teeth adapted for meshing with respective teeth of the gear rack in a locked position. The locking bar is moveable between the locked position and a released position. In the locked position, the meshing teeth of the locking bar and gear rack cooperate to prevent linear movement of the first article holder relative to the second article holder, thereby securing the first article to the second article. In the released position, the teeth of the locking bar and gear rack are sufficiently disengaged to allow free linear movement of the first article holder along the gear rack relative to the second article holder.
摘要:
A snap on, drain back fitment closure for a container, wherein the drain back pour spout fitment has a snap fit structure overlaying a container or bottle neck finish and which may be secured thereto with adhesives. The snap fit structure has an outer annular skirt with internal, radial inwardly facing beads engaging a radial outwardly facing surface of the bottle finish. Spaced from the outer annular skirt by a horizontal upper flange, the spout fitment includes an inner annular skirt with internal threads on the fitment to receive an externally threaded closure. The closure has a plug seal above the threads engaging the upper flange of the fitment. Further the closure has a radial outwardly facing latch engaging a radial inwardly facing interfering projection on the fitment forming a child safety feature for the fitment closure.
摘要:
An improved seal retainer for an undersea hydraulic coupling member, which utilizes pressure energized metal seals to maintain fluid integrity. One or more metal seals designed to have a press or interference fit are utilized in such a way that pressurized fluid trying to escape past the seal actually helps to pressure energize the seal to ensure a better seal.
摘要:
A floating seal for an undersea hydraulic coupling member is moveable radially to seal with the male coupling member even if there is some misalignment with the female coupling member. The floating seal is restricted from axial movement within the female coupling member receiving chamber. The floating seal may seal with the female coupling member.
摘要:
Chemiluminescent assays to determine the presence and/or amount of one or more labeled analytes in a sample are described wherein a solid support is contacted sequentially with first and second chemiluminescent substrates each of which are capable of being activated by an enzyme and the resulting chemiluminescent signals are detected. A plurality of probes are disposed on a surface layer of the solid support in a plurality of discrete areas. Some of the probes are bound to a conjugate of the first enzyme and some of the probes are bound to a conjugate of the second enzyme. The assay can be used to compare biological samples (e.g., mRNA populations from different cells) on the same support surface. Alternatively, one of the chemiluminescent signals generated can be used as a control signal for normalizing the chemiluminescent assay data.
摘要:
A DC fan, or lot of DC fans is characterized at a constant voltage to determine the variation of their rotational speed with respect to altitude. Many such DC fans will have a substantially linear response in speed with respect to altitude. From this relationship, a converter is constructed to convert the rotational speed into an altitude. The converter may be a discrete electronic device including a look up table or capable of performing the arithmetic algorithm representing the relationship between fan speed and altitude. Alternatively, the converter may be incorporated into the system to be cooled by the DC fan. For example, it may be a software routine run by the computer that the DC fan is used to cool.
摘要:
A ROM embedded in a multi-layered integrated circuit includes rows of transistor memory cells. For reduced area, each transistor in a row optionally shares a terminal with an adjacent transistor in the row, whereby adjacent transistors share one of a source and a drain. A plurality of contact lines one each connected to each common terminal, serve as address terminals for cells. A plurality of metal layers are connected to the other of the drain or source terminals by filled vias and include a final metal layer defining a metal pad for each of the other terminals. Filled vias couple selected metal pads to selected signal lines to provide “1” outputs from selected cells and signal lines which are not coupled by filled vias to the metal pads provide “0” outputs from selected cells.
摘要:
A multiple hole, preferably a two hole spray dispensing system and sprayer in which colliding streams of viscous fluid are dispensed to the atmosphere are provided. The spray dispenser includes a reservoir for storing a fluid product. An aerosol or manually pressurized dispensing system preferably a hand held dispensing system may be used. Liquid is delivered from the reservoir under pressure to a delivery passageway. A nozzle having two or more outlets to the atmosphere is mounted to the delivery passageway to provide colliding streams of liquid. Baffles are provided to disrupt the flow of liquid in the stream prior to the collision of the streams to provide an improved spray pattern.
摘要:
An opening roof for a vehicle having an opening in the fixed roof comprises a frame to be mounted around the opening, and a flexible cover for selectively closing or disposing the opening. A cover plate is fixed to the front side of the cover and is guided at its lateral ends through glide shoes in guide rails extending along either side of the opening in longitudinal direction of the frame. The opening roof is provided with an electric motor and drive cables coupled to the cover plate in order to slide it for opening and closing the opening roof. A displacement mechanism is arranged between the cover plate and the glide shoes, onto which the drive cables act for tightening the cover plate in a forward and downward direction relative to the glide shoes during the final closing movement.
摘要:
A system for implementing accurate V/Hz value measurement and trip time determination for generator/transformer overexcitation protection independent of the conventional frequency tracking and phasor estimation based on Discrete Fourier Transformation (DFT) techniques. A sampled sinusoidal voltage signal is passed through a digital integrator and the magnitude of the digital integrator's output is measured as representative of the V/Hz ratio. The digital integrator is implemented in software using a difference equation in a generator protection unit. The technique may be used with either a fixed or a variable sampling frequency. When the sampling frequency is variable, the filter coefficients of the digital integrator are recalculated on-line each time the sampling frequency is changed, and a new value for the peak magnitude of the output of the digital integrator is calculated using the recalculated filter coefficients. Non-linear frequency response characteristics of the voltage sensors and non-ideal characteristics of the digital integrator are also adjusted using the measured frequency and error-frequency characteristics of the particular digital integrator and voltage sensors used.