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 |
| 7404539 | Apparatus for the transmission of a deflection of an actuator An apparatus for the transmission of a deflection of an actuator, in particular of a piezoelectric actuator of an injection valve, comprises at least one first lever device which has a first transmission element which transmits the deflection of the actuator. In thi... | 07/29/2008 |
| 7353834 | Variable rate pressure regulator A pressure regulator valve including a valve seat separating a fluid flowpath into an upstream region and a downstream region. A valve closure member is mounted on a valve stem, the valve stem operable to vary a separation between the valve seat and the valve closur... | 04/08/2008 |
| 7217454 | Polymer lined sealing member for a container A seal and method of manufacture is provided for sealing containers such as bottles, jars and the like. The seal (closure) can be formed with a lower sheetlike structure having a foam layer thereon. The lower structure can include foil and have a polymer layer, such... | 05/15/2007 |
| 7152615 | Earthquake actuated horizontal valve with micro switch An earthquake actuated device includes a flapper-valve adapted to block a gas flow and a micro switch for closing or opening a circuit. A seismic sensor responds to accelerations characteristic of an earthquake. The sensor cooperates with a magnet in a flapper arm t... | 12/26/2006 |
| 7082912 | System and method for controlling engine valve lift and valve opening percentage System and method for controlling internal combustion engine valve lift and valve opening by an arrangement of cams with overlapping cams track that synchronize and vary the rise, fall, and dwell of the inlet and exhaust valves of an IC engine. ... | 08/01/2006 |
| 6953014 | Thermal compensating desmodromic valve actuation system A thermal compensating desmodromic valve actuation system for opening and closing at least one valve of an engine having a cam assemblage and a driving mechanism for reciprocal movement operably connected to said cam assemblage. The cam assemblage includes a cam mec... | 10/11/2005 |
| 6086038 | Linkage locking device Apparatus primarily for use in seating and unseating a valve by turning the valve stem between a fully opened and fully closed position. In one form of the invention, a lever arm attached to the valve stem is connected at one corner of a triangular shaped... | 07/11/2000 |
| 5967486 | Automated actuator for pull-open, push-closed valves A valve actuator having a pivotal cam-lever driven push-pull mechanical linkage system. A power mechanism moves a cam-lever member which then moves a connecting rod to move a push-pull member to lift out or push in a conventional valve stem. This then ope... | 10/19/1999 |
| 5615707 | Apparatus for jointly actuating a pair of valves An apparatus for jointly actuating a pair of valves, in particular coupling members having closure valves and having actuating shafts each of which is connected to a cam for sequentially operating the actuating shafts where the cams each have receiving po... | 04/01/1997 |
| 5040769 | Cold-weather fuel nozzle attachment A linkage attachment device is used in cold weather in combination with f and water dispensing nozzles having triggers for opening and closing valves for dispensing liquids and for stopping the flow of liquid, without manual contact by the user with such... | 08/20/1991 |
| 5016581 | Valve mechanisms A valve stem which is located for axial movement; a valve lever is pivotally mounted at one end and is attached adjacent the other end to the end of the valve stem, the valve lever defines a track; a drive pin engages in the track the drive pin being moun... | 05/21/1991 |
| 4987926 | Faucet using a cistern pump handle and a water mixing valve A faucet having a cistern-type pump body with a handle mounted on its upper end, and linkage connected to a rotary mixing valve mounted beneath the pump body such that when the handle is raised, a mixture of hot and cold water is delivered through a condu... | 01/29/1991 |
| 4977791 | Flap lever system for rotary flaps The invention regards a flap linkage for several rotary flaps arranged along a parallel axis and positioned within a frame. The rotary flap shafts have a double-armed lever on each end. Transmission elements of an adjustment gear mesh on the arms of the d... | 12/18/1990 |
| 4832078 | Quick-action valve A quick-action valve is opened and closed by a quarter turn. Safe closing with high mechanical advantage is provided, while the valve member is removed completely from the path of the flow upon valve opening. The valve member is fixed to a valve arm, moun... | 05/23/1989 |
| 4821998 | Mechanism for operating a metering valve A metering valve comprised of two rotary registers are each provided with cutouts which are symmetrical in relation to the axis of the central opening defined by the movement of the registers. In accordance with the present invention, a mechanism for oper... | 04/18/1989 |
| 4815696 | Mechanism for operating a metering valve A metering valve comprised of two rotary registers are each provided with cutouts which are symmetrical in relation to the axis of the central opening defined by the movement of the registers. In accordance with the present invention, a mechanism for oper... | 03/28/1989 |
| 4792116 | Sandblasting nozzle and control valve assembly A control valve assembly to be assembled with a discharge nozzle of a sandblasting abrasive cleaning system or the like, comprising a valve housing to be connected at an inlet end to a supply conduit having a lower valve chamber and a well formation provi... | 12/20/1988 |
| 4718637 | High vacuum gate valve having improved metal vacuum joint A two part high vacuum gate valve construction includes a control mechanism part having a limited displacement stem passing through a first generally rectangular high vacuum flange and a valve body part including a generally rectangular case, a second gen... | 01/12/1988 |
| 4653535 | Single-lever sanitary water valve A single-lever sanitary water valve is provided with a fixed cylinder which has at least one water inlet aperture and serves to receive a rotatable and/or slidable piston, by means of which the inlet aperture can be wholly or partly closed and can be link... | 03/31/1987 |
| 4570900 | Apparatus for actuating a proportioning valve An apparatus for actuating a proportioning valve is presented. The valve consists of a pair of registers, each register having a cut-out portion defining a variable area orifice which is generally symmetrical about a central longitudinal axis through the ... | 02/18/1986 |
| 4526199 | Valve for throttling fluid The valve, according to the illustrated embodiment, comprises an annular chamber formed of concentric inner and outer walls, the outer wall having, in the periphery thereof, a multiplicity of equally spaced apart rectangular slots. An annulus, having a co... | 07/02/1985 |
| 4346618 | Speed control apparatus for a vehicle A speed control apparatus for a vehicle comprising a speed control lever pivotally mounted in every direction to a frame of the vehicle, a console mounted on the frame, the console having formed therein a U-shaped guide groove in which the speed control l... | 08/31/1982 |
| 4291861 | Gate valve with slideable closure expandable upon oscillation Gate valve having in-line ports has a closure member which slides in an elongated casing between an operative position between the ports to a retracted position remote from the ports. When in operative position, the closure has a seated or expanded positi... | 09/29/1981 |
| 4070002 | Valve actuators An actuator for a valve in which valve opening and closing is effected via a rectilinearly movable member having, at one end, a driving device and, at its other end, a return-movement arrangement. To-and fro movement of the member under the control of the... | 01/24/1978 |
| 4029120 | Linkage for the demand regulator of a breathing apparatus In a scuba or other breathing apparatus, the demand regulator includes a diaphragm connected by a linkage to a valve that supplies breathable gas to the user in response to inhalation demand, as sensed by the diaphragm. The linkage includes a diaphragm-co... | 06/14/1977 |
| 3994029 | Fluid control system Described herein is a pressure activated fluid control system particularly adapted for use as a flushing mechanism for toilets of the water tank type. The system includes a push-button actuated needle valve assembly which, in the shutoff position, presses... | 11/30/1976 |
| 3952995 | Lifter mechanism for spring-loaded valve A linkage for pulling a valve stem against resistance of a compression spring comprises three link members; a first link member coaxially fixed to and extending from the stem, a second member pivoted at an end to the extending end of the first member and ... | 04/27/1976 |
