555 results about "Hand pump" patented technology

An implantable adjustable sphincter system is comprised of a band configured to encircle a portion of an anatomical passageway, a manual pump, a reservoir in fluid communication with the pump, and a valve assembly in fluid communication with the band and the manual pump. The valve assembly is comprised of a first configuration and a second configuration, and is operable to be manually switched between configurations. The first configuration only permits fluid to flow from the band toward the reservoir. The second configuration only permits fluid to flow from the reservoir toward the band. The manual pump is in fluid communication with the valve assembly and the reservoir, and is manually operable to transfer fluid between the reservoir and the band when the valve assembly is in the second configuration.

A joint aspirate-facilitating device is provided including a flexible main panel that is secured to the joint to be aspirated. An inflatable bladder is secured to the main panel and is placed in contact with the soft tissues overlying and surrounding the joint space. The bladder is used to apply pressure to selected areas of the joint to compress the fluid sacs in the joint. An access opening is formed in the main panel designating the location where joint fluid is to be aspirated. The joint fluid is directed to flow to the area of the joint exposed at the access opening based on the shape of the bladder that compresses surrounding areas of the fluid sacs. A conventional hand pump may pressurize the bladder or the bladder may be filled with a viscous gel material to generate pressure. Multiple access openings may be formed on the main panel designating locations where aspiration is to be conducted. For multiple access openings, plugs may be used to fill those openings where aspiration is not conducted, thereby maximizing joint fluid flow only to the selected location where aspiration is to be conducted. An ultrasound probe may be attached and incorporated into the device to confirm joint fluid displacement into the targeted location prior to need aspiration. A disposable molded sterile dressing may applied to the access opening to reduce the risk of infections. The device can be used on any joint of the body, and the particular shape of the main panel and bladder accommodates maximum joint fluid flow to the point where aspiration is desired.

A hydraulic tool for assembling and disassembling components, such as gears, bearings, etc. of a shaft, is capable of performing an external-pulling or an internal-pulling operation as desired for an object to be assembled or disassembled. The hydraulic tool includes an oil pressure assembly having a hand-operated pump, an oil storage member, a control valve, an oil pressure tank, a set of external pulling type clamping jaws, internal pulling type clamping jaws, and a bolt for assembling purpose. The hydraulic tool has high mobility and portability, is capable of performing assembling or disassembling operations at any angle and position, and is considerably enhanced in applicability.

The invention belongs to testing technology, and relates to a pressure-resistance and adjustment test bed for an aircraft hydraulic system, which comprises a hydraulic part and an electric part. In the test bed, a hydraulic pump and a hand pump serve as hydraulic sources, and two three-position four-way electromagnetic valves are operated to control the work of functional units of the aircraft hydraulic system; two one-way valves are arranged on oil return pipelines of the two three-position four-way electromagnetic valves so as to prevent the influence of oil return pressure when the two sets of functional units work; a proportional relief valve is used for adjusting the pressure of the system to realize the low-load starting of a motor; an accumulator system serves as an auxiliary hydraulic source and prolongs the service life of the test bed; the relief valve functions as a safety valve to prevent the overpressure of the system; a manual choke valve controls the movement velocity of each functional unit of an aircraft by flow adjustment to prevent stall; an oil tank body is made from stainless steel, and is provided with accessories, such as an air filter, a liquid level and temperature meter and the like; and the pressure-resistance and adjustment test bed has a plurality of protection functions, and can be timely powered off in accidents.

A handheld pressure sprayer and method for operating the sprayer that eliminates the requirement for a hand-operated pump or a compressor. The sprayer includes a tank with an opening through which a liquid can be introduced into the tank, a spray wand and nozzle assembly fluidically connected to the tank for dispensing the liquid therefrom, a canister releasably secured to the tank and containing a gas under pressure, a fitting coupling the canister to the tank and adapted to allow the canister to be replaced with a second canister, and a device for selectively dispensing the gas from the canister through the fitting to the tank.

A hand-operated pump that can be mounted in a cosmetic container is provided. A compression spring that provides restoring force during pumping is provided outside a housing such that it is possible to prevent contents from being contaminated and to easily pump highly viscous contents. Also, since the compression spring is stably fixed to a shaft in a state where the button is separated, it is possible to easily assemble the pump, to easily partialize parts (to modularize parts), and to prevent the pump from malfunctioning even if the button drifts away while in use. Also, since an introducing hole in the lower end of the housing is opened and closed by an opening and closing member of a specific shape, it is possible to obtain high sealing force and pumping force during pumping.