Resources Contact Us Home
Secondary cell

Image Number 7 for United States Patent #7273678.

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 of protrusions 52 extending radially thereof and joined to an edge of the electrode unit. The surface of the current collector plate 50 to be joined to the bottom wall of the cylinder has a flat region R extending on a predetermined closed-loop track on the surface, and the portions of the current collector plate 50 and the cylinder to be joined are subjected along the flat region R to laser welding from outside the cylinder.

  Recently Added Patents
Single-chain variable fragment (scFv) able to recognize and bind CD99 human protein
Apparatus and method for sterilizing vessel with electron beam
Image forming unit having agitating portion and image forming apparatus
Reduced plating ignitron
Process for production of nickel oxide-stabilized zirconia composite oxide
Bipolar transistor with diffused layer between deep trench sidewall and collector diffused layer
Compositions and methods for lowering triglycerides in a subject on concomitant statin therapy
  Randomly Featured Patents
Magnetic recording medium and manufacturing method thereof
Electronically controlled dielectric panel lens
Crown mounting block
Lamination method to create a pre-press proof with a thermal mark
Cleat forming method and machine
Adsorption medium and method of preparing same
Summary table query routing
Door actuation system having a variable damping device
Inverter device
Method and apparatus for preventing lubricant flow from a vacuum source to a vacuum chamber