Did You Know...
...that power steering was invented by independent inventor Francis W. Davis? As chief engineer in the 1920s of the truck division of the Pierce Arrow Motor Car Company, he saw how hard it was to steer heavy vehicles. So that he would be able to keep the profits from his future invention, Davis left his job, rented a small engineering shop in Waltham, Mass., and developed a hydraulic power steering system that led to power steering.
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| Number | Title | Issue Date |
| 8182934 | Secondary battery A secondary battery comprises a power generating element, a battery case including a gas release hole, and a valve safety device configured to close the gas release hole and release gas out of the battery case when inner pressure in the battery case exceeds a predet... | 05/22/2012 |
| 8053098 | Power storage unit that effectively controls pressure and vehicle A power storage unit has: a plurality of power storage modules each constituted of a power generation element which in a power generation element case containing the power generation element; and a power storage unit case containing the power storage modules and an ... | 11/08/2011 |
| 7951474 | Gas release valve A gas release valve to be mounted in an access port of a battery cell includes a housing, the upper side of which is closed by a lid. The lower side of the lid has an opening leading into the battery cell and is in communication, via degassing passageways closed by ... | 05/31/2011 |
| 7846570 | Venting water-tight battery-operated devices Water-tight battery powered appliances, for example personal care appliances such as razors and toothbrushes, are provided. The appliances include a housing having a seal that allows gases, e.g., hydrogen, to vent from the appliance without allowing water to enter. | 12/07/2010 |
| 7807282 | Nickel-metal hydride storage battery A nickel-metal hydride storage battery is provided capable of suppressing an increase of discharge reserve of a negative electrode and preventing lowering of battery characteristics. A nickel-metal hydride storage battery 100 of the present invention comprise... | 10/05/2010 |
| 7749642 | Lithium rechargeable battery with functional center pin Lithium rechargeable batteries having functional center pins are provided. A lithium rechargeable battery has a center pin having a compressed compression spring positioned within a thermal cut-off composition to reduce the void volume inside a bare cell during init... | 07/06/2010 |
| 7544439 | Venting water-tight battery-operated devices Water-tight battery powered appliances, for example personal care appliances such as razors and toothbrushes, are provided. The appliances include a housing having a seal that allows gases, e.g., hydrogen, to vent from the appliance without allowing water to enter. | 06/09/2009 |
| 7378180 | Air electrode batteries A battery includes an air electrode and an air access passageway that is closed by a non-liquid valve actuable by differential pressure to provide an opening therein to admit air to the battery. ... | 05/27/2008 |
| 7355841 | Configurations and methods for making capacitor connections An exemplary capacitor has a capacitor stack positioned in a case with a conductor positioned between the case and a lid. In one embodiment the conductor is positioned between the lid and an upper rim of the case and is welded to the lid and case. In one aspect, a c... | 04/08/2008 |
| 7347880 | Flat capacitor having staked foils and edge-connected connection members A method of joining a connection member to a capacitor foil using a staking tool having a tip of less than 0.030″ (0.762 mm) in diameter. Another embodiment couples multiple connection members of a capacitor together by edge-connecting each connection member to it... | 03/25/2008 |
| 7348095 | Battery and method for manufacturing the same After accommodating an electrode group in a battery case having a substantially square transverse cross section, making an opening head of the battery case into a cylindrical shape through compression molding, an annular groove is formed by pressing a groove-forming... | 03/25/2008 |
| 7341108 | Well downhole liquid dispenser A well downhole liquid dispenser is disclosed in which an inlet/discharge port assembly is provided having an inlet port in fluid communication with the shoulders of a conical piston. The point of the conical piston is in physical contact with the discharge channel ... | 03/11/2008 |
| 7326489 | Catalyst design for VRLA batteries A catalyst device for use with battery cells to recombine oxygen and hydrogen gas and thereby improve the performance and life of such cells. The catalyst device has the ability to filter out catalyst poisons and control the temperature of the recombination reaction... | 02/05/2008 |
| 7318980 | Rechargeable battery A rechargeable battery comprises an electrode assembly that comprises a positive plate, a negative plate, and a separator interposed between those two plates. It also includes a container for the electrode assembly, a cap assembly fixed to the container to seal the ... | 01/15/2008 |
| 7273678 | Secondary cell A secondary cell comprises an electrode unit housed in a cell can comprising a cylinder having a bottom and a closed opening, and a current collector plate 50 is provided at one end of the electrode unit. The current collector plate 50 has a plurality ... | 09/25/2007 |
| 7255354 | Gas-permeable plug and method for manufacturing the same A gas-permeable plug is adapted to be inserted in an insertion hole formed through a part of a casing in an inward-outward direction. The gas-permeable plug has a plug body and a permeable sheet including therein countless minute permeable pores. The plug body is in... | 08/14/2007 |
| 7228875 | Seal and bleed valve unit for electric batteries Sealing and breathing valve assembly for accumulators comprising: at least one substantially tubular collar associated to the cover of said accumulator and suitable for connecting the external environment with one or more breathing ducts made in said cover; an elast... | 06/12/2007 |
| 7226608 | Topical use of microfine calcined alumina Dispersions containing from about 0.5% to about 30% by weight dispersed microfine calcined alumina, stainless steel, or gold particles typically having particle size of less than about 5μ, more narrowly 1μ or less, suspended in a cosmetically acceptable carrier ar... | 06/05/2007 |
| 7175936 | Lithium secondary battery and assembled structure of lithium secondary batteries A lithium secondary battery 10 is provided with an inner electrode body 1 comprising a positive electrode plate and a negative electrode plate respectively made up of at least one metal foil 6 wound or laminated; said inner electrode body being ... | 02/13/2007 |
| 7175935 | Lithium manganese dioxide cell A lithium dioxide cell construction including a resettable positive temperature coefficient fuse. The positive temperature coefficient fuse, can withstand shock and mechanical vibration without damage and is mounted in such a way that it cannot be bypassed without d... | 02/13/2007 |
| 7157671 | Flat capacitor for an implantable medical device One aspect provides a capacitor having a first stack of capacitive elements a second stack of capacitive elements, wherein the first and second stacks are enclosed in separate compartments of a capacitor case that electrically isolate the electrolytes of each stack ... | 01/02/2007 |
| 7154739 | Flat capacitor having an active case A capacitor comprising an aluminum case; a capacitor stack mounted within the aluminum case, the capacitor stack comprising one or more anodes and one or more cathodes, one of the one or more anodes and one or more anodes attached to the aluminum case; wherein the c... | 12/26/2006 |
| 7122270 | Electrochemical cell having venting current collector and seal assembly A low profile collector and seal assembly for sealing the open end of a container of an electrochemical cell and providing venting of pressurized gases. An electrochemical cell has a can with a closed bottom end and an open top end, positive and negative electrodes ... | 10/17/2006 |
| 7101640 | Screw-in vent plug for lead-acid batteries A venting plug for a wet, lead-acid storage battery, a battery containing the same, a method of molding the venting plug body, and a mold for molding the venting plug body are disclosed. The sealing surfaces of the venting plug do not include a mold parting line alo... | 09/05/2006 |
| 7088075 | Battery pack A battery pack is provided. In the battery pack, batteries and a circuit are completely separated. A battery block includes a battery package that can house one or more of the batteries. The circuit block includes a measurement/protection circuit that has a measurem... | 08/08/2006 |
| 7081015 | Rechargeable battery with integrated protection circuit A rechargeable battery with an integrated protection circuit is made to have a high rigidity to withstand an external impact. The rechargeable battery comprises a case having an enclosed internal space for housing a battery cell, a circuit board having the protectio... | 07/25/2006 |
| 7074516 | Vent for cylindrical electrochemical batteries An electrochemical cell is presented having a gasket that is sealed against the container to prevent electrolyte leakage during normal operation. When the internal pressure of the cell reaches a predetermined threshold, the seal is removed, thereby permitting electr... | 07/11/2006 |
| 7074520 | Contoured casing of mating clamshell portions for an electrochemical cell The present invention provides an electrochemical cell of either a primary or a secondary chemistry housed in a casing having opposed major side walls of a contoured shape. ... | 07/11/2006 |
| 7072713 | Flat capacitor for an implantable medical device One aspect provides a capacitor feedthrough assembly having an electrically conductive member dimensioned to extend at least partially through a feedthrough hole of a case of the capacitor, the conductive member having a passage therethrough. ... | 07/04/2006 |
| 7007715 | Pressure release valve A shaft part is coaxially provided within a pressure release port provided in a sealing plate sealed to an opening portion of a case for a condenser or a battery, a valve body closely fitted and fixed within the pressure release port has a seal lip which is directed... | 03/07/2006 |
| 6957103 | Configurations and methods for making capacitor connections An exemplary capacitor has a capacitor stack positioned in a case with a conductor positioned between the case and a lid. In one embodiment the conductor is positioned between the lid and an upper rim of the case and is welded to the lid and case. In one aspect, a c... | 10/18/2005 |
| 6953637 | Catalytic hydrogen vent filter for batteries A selective gas permeable membrane allows hydrogen to vent from a battery while preventing other gases from entering the battery. The surface of the filter membrane also catalytically combusts hydrogen and oxygen if both are evolved inside the battery and retains th... | 10/11/2005 |
| 6949310 | Leak proof pressure relief valve for secondary batteries Secondary batteries are subjected to power cycling, and those which have a liquid electrolyte within the interior volume are equipped with a pressure relief valve. A void space over the liquid electrolyte may be subjected to gas pressure variations with respect to t... | 09/27/2005 |
| 6939642 | Prismatic battery module and method for manufacturing the same A prismatic battery module includes a prismatic battery case having a plurality of prismatic cell cases connected to one another through separation walls, a planar electroconductive connector forming part of the separation wall between the cell cases, an electrode p... | 09/06/2005 |
| 6936375 | Battery unit for lens-fitted photo film unit A lens-fitted photo film unit contains a battery unit. The battery unit has a battery, which includes positive and negative battery electrodes. A battery case is formed from insulating material, and contains the battery. An elastic cap is included in the battery cas... | 08/30/2005 |
| 6936079 | Process for assembling an electrochemical cell A process for assembling an electrochemical cell that utilizes an electrode containment shield to prevent internal electrical short circuits that are caused by fragments of a frangible electrode coming into contact with the battery's opposing electrode. The shield, ... | 08/30/2005 |
| 6924059 | Rechargeable lithium battery A thin rechargeable lithium battery having a battery main body enclosed between sealing members (a) and (b), at least sealing member (a) having a concave portion that extends to either side from a central position so as to have a peripheral collar portion (a-i) whic... | 08/02/2005 |
| 6908705 | Thin-walled battery for portable electronic equipment The present invention provides a thin battery, comprising a metal case, a battery core formed by laminating and wrapping an anode, a septum and a cathode, an anode conductive terminal and a cathode conductive terminal, characterized in that: said metal case is made ... | 06/21/2005 |
| 6878481 | Method and apparatus for regulating charging of electrochemical cells A rechargeable electrochemical cell is provided having a pressure-responsive apparatus for determining a charge termination point. In particular, a reversible pressure-responsive switch may be disposed in a cap at the open end of a rechargeable metal hydride cell. T... | 04/12/2005 |
| 6855454 | Electrochemical cell having venting current collector and seal assembly A low profile collector and seal assembly for sealing the open end of a container of an electrochemical cell and providing venting of pressurized gases. An electrochemical cell has a can with a closed bottom end and an open top end, positive and negative electrodes ... | 02/15/2005 |
