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4397 results about "Top cap" patented technology

In vacuum tube technology, a top cap is a terminal at the top of the tube envelope that connects one of the electrodes, the other electrodes being connected via the tube socket.

Single automatic document feeder sensor for media leading edge and top cover being opened detection

A single plate flatbed scanner utilizing a single sensor to detect both opening of a lid covering the plate and the leading edge of an automatically fed document. The flatbed scanner includes a contact glass plate defining a flatbed scanning area where a document to be scanned may be manually positioned. An automatic document feeder (ADF) scan window where ADF-fed documents are scanned is defined within the flatbed scanning area. An image sensor is maintained at a fixed position in the ADF scan window while scanning ADF-fed documents. To scan a manually fed document, the image sensor moves under the flatbed scanning area so as to scan an image of the document. Since the ADF scan window and the flatbed scanning area both are defined in the same area of the contact glass plate, a document inadvertently left on the contact glass blocks the ADF scan window and prevents the scanning of an ADF fed document. A single sensor is utilized to detect the opening of the ADF which uncovers the contact glass to allow manual placement of a document. Detecting the opening of the glass plate cover is used to determine whether or not a document has been left on the glass plate after scanning. The same sensor is also utilized to detect the leading edge of an ADF fed document to initiate the scanning process at the precise time the document reaches the ADF scan window.
Owner:HEWLETT PACKARD DEV CO LP

Medication dispenser

A device for enabling a patient to have ready access to a daily dosage of medication placed in compartments at predetermined time periods and wherein the compartments are only accessible to the patient at predetermined time periods. The device comprises an annular plate member having a plurality of medicine receiving compartments formed adjacent the periphery thereof. Specific dosages in the form of capsules or pills are sequentially placed in selected compartments. In a preferred mode, up to four compartments are loaded in sequence to provide one dosage, up to four sequences of four compartments allowing four daily dosages to be provided. An annular top cover member is positioned over the plate member, the cover member including a window or door. The annular compartment containing member is controlled in a manner such that a selected compartment is positioned at a location under the window. When the window is so located, an alarm is energized to alert the patient that the dosage in that compartment is available for use. When the door is opened, the alarm is deactivated. An indexing mechanism is provided to rotate the plate member so that the adjacent compartment is rotated beneath the window. As the plate member is rotated, the window is automatically shut before the alarm for the next compartment is energized. A locking member is provided so that only the health provider can have access to all the compartments and thus determine if the patient has complied with the specified dosage regimen.
Owner:GUDISH WILLIAM A

Vertical direct shear test device

InactiveCN102901676ARealize the function of direct shear testOvercome the defect of poor water retentionMaterial strength using steady shearing forcesRubber membraneDraining tube
The invention discloses a vertical direct shear test device. The vertical direct shear test device comprises a base, a water injection pipe and a water drainage pipe, wherein a pressure chamber is arranged on the base, an upper cover of a shear chamber is arranged on the pressure chamber, a rubber membrane sleeve is arranged in the pressure chamber, the lower end of the rubber membrane sleeve is arranged on the base, the lower end of the rubber membrane sleeve is hermetically connected with the base, an upper shear box and a lower shear box are arranged in the rubber membrane sleeve, the upper and the lower shear boxes are respectively positioned at the upper end and the lower end of the rubber membrane sleeve, a test sample cavity is surrounded by the rubber membrane sleeve and the upper and the lower shear boxes, the upper and the lower shear boxes adopt shear components, each shear component comprises a substrate, the substrates are respectively provided with a shear block and a deformation block, the opposite planes of the shear block and the deformation block are coplanar with the shear plane of a test sample, water grooves are arranged on the opposite planes of the shear block and the deformation block, the water grooves extend to the substrates and penetrates the substrates, water through holes are formed, the water injection pipe is connected with the water through hole in the upper shear box, the water drainage pipe is connected with the water through hole in the lower shear box, a top cap is arranged on the upper shear box, and the top cap is provided with a vertical loading shaft.
Owner:HOHAI UNIV

Nonsaturated soil hydraulic parameter measuring device and measuring method

The invention relates to an unsaturated soil hydraulic parameter measuring device and a measuring method. The device consists of a pressure chamber 12, a pneumatic pump 21, a vacuum pump 8, a loading frame 10, an appliance base 27, hydraulic pressure pipelines 4 and 20, and pneumatic pipelines 11 and 15. The pneumatic pipelines of the pressure chamber 12 are connected with a pneumatic sensor 16, a pneumatic control valve 18 and the pneumatic pump 21; a water filling pipeline 28 of the appliance base 27 is connected with a control valve 29; the hydraulic pressure pipeline 20 in the center of the sample base is connected with a lower clay plate 14, a hydraulic sensor 9, a water volume measuring pipe 17, a hydraulic pressure control valve 19 and the pneumatic pump 21; a hydraulic pipeline 4 in the center of a top hat is connected with the an upper clay plate 14, the hydraulic sensor 9, a water volume measuring pipe 6, a hydraulic pressure control valve 7 and the vacuum pump 8; a sample 30, a top cap 13, a clay plate 14, a sample 30 and a sample base 25 are arranged between two clay plates 14 and are wrapped by rubber membranes; the sample 30, a pneumatic sensor 23, a pneumatic control valve 22 and the pneumatic pump 21 are connected with the pneumatic pipeline 11 which passes through the rubber membrane from the middle of the sample 30; and the pressure of a weight 26 is added to the sample by the loading frame 10 and a pressurizing shaft 3. The device can be used for measuring soil and water retention curve and unsaturated permeability coefficient of various soils under the condition of three-directional loading.
Owner:INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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