Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8074559 | Dynamic support apparatus and system A dynamic support apparatus having a frame, a dynamic interface, a temperature control mechanism, and a control system. The dynamic interface is capable of changing its geometry and is disposed on the top surface of the frame. The control system is operably connecte... | 12/13/2011 |
| 6957806 | Airspring assembly An improved airspring assembly includes a collapsible support member disposed within the pressurizable chamber of an airspring having a flexible sidewall. The support member is configured such that it extends and collapses along a longitudinal axis of the chamber re... | 10/25/2005 |
| 6926256 | Center sill car jack utilizing air bellows The disclosed jack assembly is used to raise the frame of a railroad car to a sufficient height above a wheeled truck assembly coupled to the railroad car in order to perform maintenance or remove the truck assembly. The jack assembly comprises an air-operated bello... | 08/09/2005 |
| 6484601 | Bellows actuation device, specially for robotic manipulator, and method to operate said device An actuation device uses, for the active element, a flexible bellows operated by a pressurized fluid (usually, but not necessarily, at a pressure higher than the ambient one). The bellows is housed, for the most part of its length, inside a cylindrical ca... | 11/26/2002 |
| 6289784 | Pump for spring water A spring water pump comprising: a housing sealably connected to a water container and having a sealing member for sealing the connected portion between the water container and the housing; a pressure member of bellows type located inside the housing, the ... | 09/18/2001 |
| 5249968 | CPR manikin (piston) A compressible piston (40) is disclosed for use in a CPR manikin to simulate the resistance of the human chest cavity. The piston (40) has a flexible corrugated upper wall (42) to permit compression and a lower rigid wall portion (43) to act as a tactile ... | 10/05/1993 |
| 5230276 | Fluid-driven actuator including an inflatable sac A fluid-driven actuator including a barrier having narrow openings, an inflatable sac having two portions, a first portion including working surface external to the barrier means, and a second portion compactly folded behind the barrier means, and a movab... | 07/27/1993 |
| 5224841 | Pneumatic bellows pump with supported bellows tube A low contamination double bellows pump suitable for providing relatively constant pressure and delivery. The illustrated pump includes two pumping chambers with bellows arranged in opposed relationship on opposite sides of a central section. The central ... | 07/06/1993 |
| 5150820 | Dispensing apparatus for frozen product Frozen product dispensing apparatus comprises a cylindrical housing 14 for locating a cylindrical deformable container 26 of product. A plunger 16 bears on the container to discharge the product from the container 26 and the plunger is driven by compresse... | 09/29/1992 |
| 5141412 | Double acting bellows-type pump A double acting, self-priming bellows-type pump has a pair of bellows that work as displacement elements arranged each in a cylinder chamber mutually and synchronously interlocked by piston rod, so that at the same time as one bellows draws in, the other ... | 08/25/1992 |
| 5109833 | Heart massage and artificial respiration device The invention relates to a heart massage and artificial respiration device comprising a patient adapter, a compressible, elastically re-expanding bellows or the like adapted to be placed on the thorax of the patient, an air intake valve associated with th... | 05/05/1992 |
| 5061156 | Bellows-type dispensing pump A microprocessor controlled bellows-type pump system for the precise and accurate pumping and dispensing of fluids. The pump comprises a longitudinally contracting bellows which is supported from warping under fluid pressure by a support bushing in contac... | 10/29/1991 |
| 4976193 | Bellows with a minimized compression size The invention relates to a bellows with supporting elements, the supporting elements being provided with a notch in the zone where the folded material of the accordion overlaps. Such a bellows is characterized by an especially small compression size.... | 12/11/1990 |
| 4896753 | Bicycle brake A bicycle brake system with at least one master cylinder that is connected to a hand lever, and at least one wheel cylinder that is connected thereto by a hydraulic brake line is to be improved in that a hollow body (38) that is of elastic material and cl... | 01/30/1990 |
| 4776852 | Artificial musculoskeletal mechanism An artificial skeletal mechanism having a central rigid inverted T-shaped link and a pair of elastic tubular actuators on either side of the link, each actuator having an inner chamber for receiving a pressure fluid serving to pretension it. Each actuator... | 10/11/1988 |
| 4712780 | Hydropneumatic spring suspension device The invention relates to a hydropneumatic spring suspension or shock absorber device, in particular for heavy motor vehicles, which a spring element comprising a housing for a spring bellows filled with a hydraulic medium which is in flow connection with ... | 12/15/1987 |
| 4488473 | Fluid-actuated ram A working head is adapted to impart reciprocal motion under a predetermined amount of force to a plunger through a working and return cycle and at a controllable rate of speed. A fluid circuit includes delivery and return lines extending between a source ... | 12/18/1984 |
| 4470524 | Apparatus for controlling discharge from a silo Apparatus for controlling discharge from a silo, comprising a device mounted internally of a discharge opening for flowable material and forming with that opening a flow path for material through the opening. A bellows actuator associated with the device ... | 09/11/1984 |
| 4377966 | Servo boosters for vehicle braking systems In a servo booster for a vehicle braking system, of the kind having a tie rod for relieving the booster housing of braking reaction forces which extends through the movable wall(s) of the booster, the movable wall is sealingly connected to a wall of the h... | 03/29/1983 |
| 4308788 | Fluid pressure responsive apparatus A differential pressure unit having overrange valves loosely mounted on a valve stem connected between the ends of a respective pair of movable bellows ends. A pair of spiral range springs bias both valves toward open positions. The valves include annular... | 01/05/1982 |
| 4292885 | Bellows apparatus A bellows apparatus consisting essentially of a bellows main body and restriction means for restricting elongation and contraction, said restriction means comprising plural annular guide metals provided integrally to said bellows main body with a predeter... | 10/06/1981 |
| 4278236 | Slide valve for pipelines A valve housing is adapted to be built into a pipeline, and a valve plate is movable into a valve-closing position in the housing. A displaceable sealing member provides a seal between the valve plate and the housing. At least one spring tends to displace... | 07/14/1981 |
| 4268042 | Flexible bellows piston seal Means and method are provided for utilizing a piston and cylinder combination eliminating the usual sealing and oil rings and their accompanying friction and replacing them with ball bearings which in the principal embodiment are captured in splitring cag... | 05/19/1981 |
| 4253303 | Engines, and particularly those incorporating the Stirling cycle An engine other than an internal combustion engine, and preferably one incorporating the underlying philosophy of the Stirling hot gas engine, is physically arranged to both significantly reduce its size and weight relative to earlier designs as well as r... | 03/03/1981 |
| 4103371 | Toilet seat lift The application discloses a foot actuated air or liquid dispensing means connected to a cylinder and piston rod for lifting the seat, so that the user will not have to soil his hands lifting the seat.... | 08/01/1978 |
| 4080183 | Radial flow scrubber A radial-flow scrubber in which a gas is passed downwardly through an annular gap after having been treated with a liquid in which the gap is adjusted by a ring disposed below the orifice for the gas/liquid mixture and shiftable toward and away from the l... | 03/21/1978 |
| 4080107 | Bellows pump and pumping plant for oil-filled electric cables A pump for pumping insulating oil for oil-filled electric cables in which a driven piston is within and spaced from a tubular bellows which is surrounded by an enclosure. The bellows forms a chamber with the enclosure which contains the cable oil, and the... | 03/21/1978 |
| 4072086 | Driving assembly A driving assembly for moving one unit with respect to another, for instance, a working unit with respect to a frame unit. Preferred practical applications for the driving assembly are lifting platforms or presses. The driving assembly includes a flat, en... | 02/07/1978 |
| 3961863 | Water action powered pump Method and apparatus wherein complex multiplanar surface motion of the sea or other fluid body is converted into usable energy. One embodiment of the apparatus comprises a pair of flexible tubular pumping elements that pump a fluid, such as sea water, to ... | 06/08/1976 |
| 3935795 | Actuating mechanism An actuating mechanism for moving an indicator, an operational tool or a structual component with a high degree of precision over precisely predeterminable distances to desired points of operation, which comprise a shaft, slidably mounted upon said shaft ... | 02/03/1976 |
