Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 7086322 | Fluidic device In a fluidic drive for disposition between two components which are movable relative to each other comprising a hollow body with a duct for supplying fluid to, and discharging it from, the hollow body wherein the hollow body consists at least partially of a bellows ... | 08/08/2006 |
| 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 |
| 6742643 | Elastomeric damper for hydraulic clutch actuator A hydraulic clutch actuator system having a vibration damper in the system including an elastomeric diaphragm and a steel diaphragm. One face of the elastomeric diaphragm is in communication with fluid in the system so that the diaphragm may deflect in response to l... | 06/01/2004 |
| 6631928 | Expansion joint device Both ends of a bellows-type outer cylinder [31] capable of axial expansion and contraction are connected in a leakproof manner to a pair of connection passage ends [20], thereby constituting an expansion passage [30]. A cylindrical resin film [33] having ... | 10/14/2003 |
| 5992900 | Pressure actuated pipe swivel joint A packless swivel joint capable of rotation without the necessity for a mechanical drive includes a hollow tubular member provided with helical corrugations of tight pitch and a corrugation pitch to corrugation with ratio of between two to one to three to... | 11/30/1999 |
| 5937732 | Actuator for converting fluid energy into a mechanical force An actuator for converting fluid energy into a mechanical force comprises an inner expansion chamber and an outer power transmission envelope which surrounds the expansion chamber and comprises a flexible but non-stretchable endless filament or multifilam... | 08/17/1999 |
| 5317952 | Tentacle-like manipulators with adjustable tension lines A tentacle-like manipulator has a resiliently longitudinally extensible, laterally bendable elongate member, e.g. an inflatable bellows or a helical compression spring-like member, with an end effector mounting on one end thereof. Tendon-like tension memb... | 06/07/1994 |
| 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 |
| 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 |
| 5094784 | Dual volume carburetor priming system A carburetor priming system for an internal combustion engine including a flexible bulb which is actuable in a first manner to permit displacement of a one volume of fluid and in a second manner to permit displacement of a second and lesser volume of flui... | 03/10/1992 |
| 4784040 | Control system for expelling liquid from a pneumatic actuator A control system for a pneumatic actuator uses pressurized gases, such as air, as the actuating medium. Such gases and particularly air commonly contain moisture which condenses to form a liquid, such as water, which collects in a closed chamber of an exp... | 11/15/1988 |
| 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 |
| 4655690 | Bellows pump having adjustable stop cam for varying the stroke A bellows pump with the improvement of an adjustable index for uniformly controlling the amount of fluid displaced in each expansion and compression cycle.... | 04/07/1987 |
| 4641569 | Calender self-locking loading mechanism An improved pressure actuator particularly suited to loading of rolls in the calender stack is disclosed. The actuator is formed by a pair of spaced arms interconnected by a link. A pressure absorbing locking bar is interposed between a pair of adjacent e... | 02/10/1987 |
| 4507922 | Thermostatic assembly An assembly having a heat expansible fluid therein and capable of expanding and contracting in response to temperature changes between predetermined limits with a first member having a front surface and a rear surface, with the surfaces terminating in a f... | 04/02/1985 |
| 4473082 | Lung exerciser with variable resistance A device consisting of an adjustable volume bellows made of inexpensive materials to be used as a visual indicator and volume measurement to encourage a patient to breath deeply as an exercise is provided. Means for adding calibrated weight to vary resist... | 09/25/1984 |
| 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 |
| 4345605 | Lung exerciser A volume type lung exerciser consisting of a light bellows made of a stack of flat sheets of plastic film welded together and having an inner support skeleton of semi-rigid sheets. The bellows is hung from a collapsible leg stand which slides into a movab... | 08/24/1982 |
| 4336747 | Product and method of making bellows A product and method of making a bellows from thermoplastic sheet material including forming a plurality of substantially U-shaped gussets having inside and outside edges, heat-sealing the inside edges of the gussets in pairs, heat-sealing the outside edg... | 06/29/1982 |
| 4311892 | Pressure limiting switch for an instrument air circuit A pressure limiting switch is provided for limiting the upper and lower limit values of the air pressure in a circuit feeding pneumatic controls. The switch has a switching arm which is pivotable at one end around a fixed axis in the switch body and adapt... | 01/19/1982 |
| 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 |
| 4287814 | 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... | 09/08/1981 |
| 4227444 | Aneroid bellows assembly Aneroid bellows assembly utilized in the emergency oxygen supply systems of aircraft includes a leaf spring mounted at its center to an adjustably positioned end fitting located on the axis of an evacuated bellows spring. The outer edges of the leaf sprin... | 10/14/1980 |
| 4183289 | 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... | 01/15/1980 |
| 4006329 | Switch for sensing a selected ratio between two different pressures A device for providing a measurement of the value of the ratio of two pressures by sensing the position of a member that is urged in one direction by one pressure and oppositely by the other pressure with the element further having both pressures set agai... | 02/01/1977 |
| 3978784 | Calendar control system A calendar stack is provided with pneumatic actuators of the expansible bag or bellows type wherein a selected roll has the end bearings thereof carried by a pair of pivoted control arms, the position of a respective control arm being selectively controll... | 09/07/1976 |
| 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 |
