Abstract: An object of the present invention is to provide a method for producing an ADM suitable as a scaffold for a cultured skin, that is, a separation and decellularization method that enables various types of extracellular matrixes such as a basement membrane to be preserved, allows the epidermal layer to be peeled off easily, and does not cause any damage to the dermal matrix. The present invention relates to a skin separation and decellularization method comprising a step of freeze thawing harvested skin and then separating the skin into epidermis and dermis by a treatment with hypertonic saline, and a step of washing the separated dermis.

Abstract: A method for decellularizing separated skin is provided, the method involving simultaneous treatment with a protease and a surfactant. A highly reliable acellular dermal matrix and an optimum allogeneic acellular dermal matrix for simultaneous grafting with an autologous skin graft are also provided. Furthermore, there is provided a method for producing an acellular dermal matrix, the method including a decellularizing step of treating separated skin simultaneously with a protease and a surfactant, and there is also provided a composite cultured skin employing as a substrate the acellular dermal matrix.

Abstract: A fuel pump improved in pump efficiency is provided. An impeller rotating in a pump casing has an approximately disk-shaped configuration with a group of recesses formed in a region extending along the outer peripheries of the obverse and reverse sides of the impeller. The recesses are repeatedly arranged in the circumferential direction at a distance between each pair of adjacent recesses. The radially outer end face of each recess slantingly extends radially outward from a middle plane in the direction of thickness toward the obverse and reverse sides. With this fuel pump, the incidence of separation or vortex formation in the flow of fuel is minimized, and a high pump efficiency can be obtained.

Abstract: A fuel pump in which a terminal plate can be liquid-tightly mounted to a body upper and prevented from being dislodged from the body upper without the need of other component parts is provided. The terminal plate is formed with a cut and raised portion for preventing dislodging. When the terminal plate is inserted into a terminal plate through-hole having a step portion, a projection and a press-fit portion, the cut and raised portion is closed by being pressed with the projection and allowed to reach the step portion without contacting the press-fit portion. Then, the cut and raised portion returns to its natural configuration. Thus, the terminal plate is prevented from being dislodged to fall into the fuel pump. Because the press-fit portion is not damaged when the terminal plate is inserted, the terminal plate can be placed in liquid-tight contact with the body upper block.

Abstract: A fuel pump improved in pump efficiency is provided. An impeller rotating in a pump casing has an approximately disk-shaped configuration with a group of recesses formed in a region extending along the outer peripheries of the obverse and reverse sides of the impeller. The recesses are repeatedly arranged in the circumferential direction at a distance between each pair of adjacent recesses. The radially outer end face of each recess slantingly extends radially outward from a middle plane in the direction of thickness toward the obverse and reverse sides. With this fuel pump, the incidence of separation or vortex formation in the flow of fuel is minimized, and a high pump efficiency can be obtained.

Abstract: A fuel pump in which a terminal plate can be liquid-tightly mounted to a body upper and prevented from being dislodged from the body upper without the need of other component parts is provided. The terminal plate is formed with a cut and raised portion for preventing dislodging. When the terminal plate is inserted into a terminal plate through-hole having a step portion, a projection and a press-fit portion, the cut and raised portion is closed by being pressed with the projection and allowed to reach the step portion without contacting the press-fit portion. Then, the cut and raised portion returns to its natural configuration. Thus, the terminal plate is prevented from being dislodged to fall into the fuel pump. Because the press-fit portion is not damaged when the terminal plate is inserted, the terminal plate can be placed in liquid-tight contact with the body upper block.

Abstract: A pump housing PH surrounding an impeller 21 comprises an inlet port 19 and an outlet port 20 disposed in a spaced-apart relationship from each other in a direction of rotation of the impeller 21, a pump passage 23 corresponding to vane grooves 22 of the impeller 21 and extending from the inlet port 19 to the outlet port 20 along the direction of the impeller rotation, and a partition 25 for partitioning between the outlet port 20 and the inlet port 19 along the direction of the impeller rotation. A passage-communicating portion 29 for communication between the inlet port 19 and the pump passage 23 is offset from the partition 25 in the direction of the impeller rotation, and a passage-enlarged portion 30 is provided between the partition 25 and the passage-communicating portion 29.