A solid acid catalyst comprising porous highly fluorinated acidic polymer and process for manufacturing it. The catalyst comprises at least about 90 wt. % highly fluorinated acidic polymer and has a surface area of about 0.01 m2/g to about 5 m2/g.

An electromagnetic brake for a pumping unit, which mainly solves the problems in the prior pumping unit braking device such as complex structure and operation, and is characterized in that an input shaft (1) is connected with a gear sleeve (3) through a key; the outer teeth of the gear sleeve (3) engage with the inner teeth of two double-side friction disks; an intermediate friction plate (12) is ...

The utility model discloses a marketing terminal machine which comprises a data base for storing commodity information, video information and character information relative to commodities; a multimedia information interaction unit which comprises a video display module and a character display module, and is used for displaying the video and character information; a remote information interaction u...

The present invention relates to a diethylene glycol ester based plasticizer composition comprising at least two diethylene glycol ester compounds. The diethylene glycol ester based plasticizer composition of the present invention offers superior tensile strength, elongation, transfer resistance, hardness, transparency, adhesivity, and compatibility with resin, when used for a plasticizer of a pol...

This invention discloses a disk hydraulic brake with brake force adjustable including a working device composed of an internal gear loop and friction wafers and a dynamic device composed of a shell, a piston, a compression spring, a baffle and a sealing piece, in which a connection outer gear is set in the internal gear loop, the friction wafer set is set between the outer gear and the internal ge...

A differential gear mechanism (11) and improved axle shaft (53) retention arrangement for the axle shaft. The mechanism includes a side gear (27) defining first internal splines, a coupling (35) defining second internal splines (35S), and a rotor (49) of a gerotor pump defining third internal splines (49S). The axle shaft includes external splines (55), an annular groove (57), and a collapsible an...

An electronic apparatus has a wiring board and connector units which are mounted at a case unit. The connector unit has an external connection surface connected with the external and a terminal installation surface, which is substantially flat and positioned at an opposite side to the external connection surface. A terminal of the connector unit is electrically connected with a pad positioned at a...

The invention provides a method for preparing single-domain samarium-barium-copper-oxygen (Sm-Ba-Cu-O) superconducting bulk materials. The method is characterized in that neodymium, barium, copper and oxygen to which MgO powder is added are adopted as seed crystals; a Sm2BaCuO5 phase, a BaCuO2 phase and a CuO phase are prepared according to a certain molar ratio, and a proper amount of CeO2 powder...

The present invention discloses an advertisement broadcasting method, an advertising system and a related device, which are used for improving the experience of the user. The method comprises the following steps: the user terminal broadcasts the received media information which comprises the advertisement information; the advertisement information is used for judging whether the preset advertiseme...

A method for providing stock information and a broadcast receiving apparatus using the method are provided. According to the method for providing stock information, stock information is received according to the RSS protocol, and the received information is displayed as display information on a display of the broadcast receiving apparatus.

A packet transfer device, system and monitoring method, a call control and monitoring apparauts. A terminal device transfers a packet firstly in a test class. When the communication quality is not sufficient, it is judged whether to perform re-trial in a trial class according to the packet communication amount of the priority class after a predetermined period of time. Moreover, there are provided...

A synergistic antimicrobial composition containing at least two kinds of antimicrobial agents, including poly-hexamethylene biguanide (PHMB), stably associated to a material substrate is described. The substrate can take the forms of an anti-infection face mask, medical devices, or surgical instruments.

An irrigation catheter assembly (10) comprises an electrode sheath mount (14) for mounting an electrode sheath (36). The mount (14) has a laterally arranged aperture (52) defined in it through which conductors for electrodes of the electrode sheath pass, in use A connector (16), to which a source of irrigation fluid is connectable, is connected to a proximal end of the electrode sheath mount (14)....

Disclosed is apparatus for exercising the abdominal muscles, comprising: a control means, a visual display having a plurality of elements each of which is capable of individual illumination responsive to signals from the control means, and detection means for detecting a hand or part thereof placed in proximity to an illuminated one of the plurality elements, the illuminated element being returned...

The invention relates to a multi-layer film having at least one fluoropolymer layer, useful for high-purity contact applications. Preferably the fluoropolymer layer(s) are polyvinylidene fluoride polymers and copolymers.

Monolayer and multilayer polypropylene-based films are provided which are excellent in not only heat resistance but also all of transparency, flexibility and impact resistance. The polypropylene-based monolayer film has a thickness of 100 to 400 mum and satisfies Requirements (1) to (4) below all together. The multilayer film includes the monolayer film as the base layer. (1) The Young's modulus m...

The present invention provides polyolefin films comprising calcium carbonate that have a reduced moisture vapor transmission rate, methods of making the films, and packaging materials comprising the films.

The present invention provides a conveyance tool and a tool string having one or more sensors or cameras for detecting the performance of pre-existing perforations in a cased wellbore, and one or more perforation intervention tools mounted on the tool string and capable of performing remedial actions directed at at most one perforation and its nearest neighbors or at a single perforation.

A sensor capable of simply grasping whether or not the concentration of an object to be sensed is a reference value or less. A sensor uses, as specific means, a piezoelectric vibrator having an absorbing layer for absorbing an object to be sensed and an electrode and vibratory with a natural frequency variable by the absorption of the object and senses the object by a variation of the natural freq...

A device for monitoring a rechargeable battery includes at least one current interruption switch for interrupting current flowing through at least one associated cell and a plurality of monitoring units for detecting cell voltage. Each monitoring unit is associated with a single cell and includes a reference voltage unit for producing a defined reference threshold voltage and a voltage comparison ...