Granted: August 18, 2016
In certain configurations and applications, fuel cell stacks can be subject to damage arising from resonance. For instance, the natural frequency of lengthy automotive fuel cell stacks can be low enough to be problematic. Incorporating appropriate support bars between the compression straps holding such stacks together and the fuel cells in the stack can suitably increase the natural frequency in a relatively compact manner.
Granted: May 12, 2016
The performance of solid polymer electrolyte fuel cell stacks can be improved by incorporating an appropriate set of through-holes in the catalyst layers, and particularly in the cathode catalyst layers. Intaglio methods suitable for manufacturing catalyst layers with through-holes are disclosed.
Granted: January 7, 2016
Additives can be used to prepare polymer electrolyte for membrane electrode assemblies in polymer electrolyte fuel cells in order to improve both durability and performance. The additives are chemical complexes comprising certain metal and organic ligand components.
Granted: November 12, 2015
In at least one embodiment, a paint applicator robot is provided. The robot may include a robotic arm including a hollow joint and a paint applicator, a color tree disposed between the hollow joint and the paint applicator, and a dual-lumen line extending through the hollow joint to the color tree. The dual-lumen line may include a paint supply path to the color tree and a paint return path from the color tree. The robot may include a plurality of the dual-lumen lines, for example, up to…
Granted: September 3, 2015
According to one or more embodiments, a hot-stamping device includes first and second die portions including an alloy of metal M, the alloy of metal M having higher heat conductivity than ferrous alloy, and a cooling circuit in communication with at least one of the first and second die portions. The metal M may be copper. The alloy of metal M may include greater than 50 percent by weight of metal M. The first and second die portions may each independently include a greater than 50…
Granted: August 6, 2015
A laser inspection fixture for facilitating visual inspection of attachments to an object such as adhesive, sealant, wax or mastic daubs or lines on the article in a manufacturing process. The intended location of each object is illuminated by one laser that is provided with a dot profile template. The fixture may also be used to facilitate visual inspection of production tools and dies to verify tool set-up configurations.
Granted: November 20, 2014
Bipolar plate assemblies are disclosed in which the transition fuel channels are offset from the transition oxidant channels in the transition regions on the active sides of the plates. This configuration allows for a reduced pressure drop in the coolant flow in the transition regions on the inactive, coolant side of the plates and thereby improves coolant flow sharing. The assemblies are suitable for use in high power density solid polymer electrolyte fuel cell stacks.
Granted: November 6, 2014
Hybrid bipolar plate assemblies comprising a metal subassembly and a carbonaceous flow field insert can be used to provide for greater current densities from smaller volume fuel cell stacks. In particular, such hybrid bipolar plate assemblies allow for the combination of preferred oxidant channel structures, which can be formed in carbonaceous oxidant flow field inserts, with preferred smaller bipolar plate assembly thicknesses, which are possible with the use of metal plate…
Granted: October 9, 2014
An electrically conductive adhesive is disclosed for bonding anode and cathode flow field plates together for use in fuel cells. The adhesive formulation comprises epoxy methacrylate resin and non-fibrous carbon particles but little to no carbon fibres. The adhesive provides suitable strength, bond gap, conductivity and other properties, particularly for flow field plates made of flexible graphite, carbon, or metal.
Granted: August 21, 2014
A self-piercing die riveter having an indexable die table on the nose of its frame. The die table has a number of dies disposed thereon. The frame defines a first passage and a second passage in communication with and diverging from the first passage. An actuator for indexing the die table is located on the riveter outside of the nose of the frame and is connected to the die table through either shafts or belts disposed within the first and second passages. The die table has a number of…
Granted: August 21, 2014
A manufacturing process including a quality control procedure for verifying the completion of forming processes, heat treating and chemically treating parts. Sheet formed blanks, tubular blanks, extrusions and casting are traced through a manufacturing process from the time the parts are received. Metallurgical data relating to parts as received is recorded and marked on the parts. Forming data, heat treating data and chemical treating data may also be recorded by scanning and marking…
Granted: August 14, 2014
The present invention provides methods to create a pattern part, and a subsequent mold core package, that can be used in the casting process to cast one or more die components having a near net-shape of the finished part. In this way, the present invention provides a cast part which greatly reduces the amount of finishing work that needs to be performed on the part after casting. Further, the present invention provides a method which involves less upfront stock material to cast the near…
Granted: August 7, 2014
A set of test requests, a test calendar, and a list of prototype control models are received in a computing device having a processor and a memory. Each of the test requests includes an identifier for one of a plurality of tests to be performed and one or more attributes required to be included in a prototype to be used in the one of the tests. The test calendar includes a test duration and a list of build dates, each of the build dates associated with one of a plurality of prototypes to…
Granted: July 31, 2014
A gas reclaiming system is disclosed. The gas reclaiming system includes a getter device adapted to receive mixed gases and separate the mixed gases into at least one gas of interest and constituent gases. A recirculation loop is disposed in fluid communication with the getter device and adapted to receive the at least one gas of interest from the getter device. A gas reclaiming method is also disclosed.
Granted: July 24, 2014
An apparatus, tool and method for clearing a rivet from an automated riveting tool. The riveting tool has a nose that supports the rivet as the rivet is installed by a punch. A clamping ring engages a work piece while installing the rivet. A clamping ring engages a block, but defines a clearance area into which the rivet is ejected when an unsuitable rivet is detected. A sensor monitors the rivets in the nose and prevents installation of the rivet when the rivet in the nose is not…
Granted: May 1, 2014
A system and method of making a part. The part may cast in a die. A gripper assembly may be provided that has a gripper and a spray nozzle that provides a fluid. The part may be quenched with a fluid when the part is in the die.
Granted: April 3, 2014
A front sub-assembly for an automotive vehicle is disclosed. The front sub-assembly includes a pair of spaced apart substantially hollow side assemblies. Each of the side assemblies includes an upper side member and a lower side member. The front ends of the side assemblies are joined together by a front cross member that includes a front cross member reinforcing bracket and an internal mass dampener. The rear ends of the side assemblies are joined by an upper cross member and a lower…
Granted: March 20, 2014
Electrically conductive meshes with pore sizes between about 20 and 3000 nanometers and with appropriately selected strand geometry can be used as engineered supports in electrodes to provide for improved performance in solid polymer electrolyte fuel cells. Suitable electrode geometries have essentially straight, parallel pores of engineered size. When used as a cathode, such electrodes can be expected to provide a substantial improvement in output voltage at a given current.
Granted: February 27, 2014
A vehicular alerting system includes at least one light source mounted on a vehicle. The light source is configured to emit a light beam, forming a projection. More particularly, the projection is projected peripherally substantially all around the vehicle onto a vehicular travelling surface, up to a predetermined distance from the vehicle, establishing a vehicular unsafe zone.
Granted: December 19, 2013
A workpiece holding fixture including a base plate having an engagement surface including a travel slot. A first static riser includes a position control member configured to removably couple a workpiece to the first static riser. A second static riser includes a rotation control member and is configured to removably couple the workpiece to the second static riser. A dynamic riser is configured to abut the workpiece by automatic, semi-automatic, or manual movement into secure engagement…