摘要:
A diaphragm type damper has a combined member, which is formed by welding a marginal portion of a diaphragm to a half body having a concave portion formed therein, and is fixed to a pressure chamber portion to which high pressure fluid is introduced. A wall thickness of a welding portion of the half body is not relevant to welding, and the heat capacity of the welding portion is small. Since the half body is allowed to have a large wall thickness, leakage from the welding portion and damage to that portion can be prevented. In addition, the diaphragm type damper of this present invention can be easily assembled, since it requires only fixing the combined member to the pressure chamber portion.
摘要:
The distance A between opposite end nozzles 4e and 4e on the nozzle plate 4 is set smaller than the distance B between opposite end link channels 3e and 3e in the actuator. The difference between the distances A and B is determined dependent on the difference between the thermal expansion coefficients of the actuator and of the nozzle plate. After being heated, the nozzles will be properly located in correspondence with the ink channels. During the heating step, the nozzle plate is placed on the actuator via an adhesive. Then, the heater block is placed on the nozzle plate to heat the adhesive via the nozzle plate and to press the nozzle plate from upwardly. Accordingly, the temperature of the adhesive rapidly increases, whereby gas is completely discharged from the adhesive before the adhesive is completely hardened.
摘要:
An externally threaded portion 31 of a valve body 10 is threadingly engaged with an internally threaded portion Hb formed on the opening portion side of an attachment hole Ha. A flange portion 32 of the valve body 10 is brought into abutment with an upper surface Hc of the housing H, so that the valve body 10 is fixed to the housing H. A lower end of the valve body 10 is located away from a bottom surface of the attachment hole Ha. A valve seat 23 and a guide hole 24 are formed inside the valve body 10. The valve seat 23 and the guide hole 24 are located on a lower side than the externally threaded portion 31. A valve element 50 is provided inside the valve body 10. This valve element 50 includes a seat portion 51 rest on the valve seat 23, and a guide portion 55 slidably engageable with the guide hole 24. A lower end opening portion of the guide hole 24 is shielded with a shielding plate 25. An orifice 25a is formed in the shielding plate 25.
摘要:
A radial piston pump for low-viscosity fuel according to a first aspect of the invention comprises a pump housing, which is constituted of as few as two structural bodies (from among a drive-side housing member 2A, a fixed cylinder 81 and a cover 4), and a leaf valve member 82 which is formed with intake valves 87 for opening and closing intake side passages 27 and discharge valves 88 for opening and closing discharge side passages 28 and is sandwiched between two structural bodies (fixed cylinder 81 and cover 4). The first aspect of the invention reduces the number of components constituting the pump housing, enables highly precise overall axial alignment, prevents wobbling of a pump shaft 9 of the pump, increases performance and reliability and reduces cost. A radial piston pump for low-viscosity fuel according to a second aspect of the invention comprises a leaf valve member 205 formed in one and the same plane thereof with overflow ports communicating with an overflow passage 59 in the pump housing, intake valves 87 communicating with intake side passages 27 and discharge valves 88 communicating with discharge side passages 28. The third aspect of the invention provides a method for assembling the radial piston pump for low-viscosity fuel according to the second aspect of the invention.
摘要:
A protein having human plasmin inhibiting activity, substantially equivalent reactivity with human plasmin to a human .alpha..sub.2 -plasmin inhibitor derived from plasma, a binding ability to human fibrin about 1/4 to about 1/3 of that of the human .alpha..sub.2 -plasmin inhibitor derived from plasma, and a molecular weight of about 50,000 to about 77,000.
摘要:
A particulate polybutadiene crosslinked material is disclosed along with a process of making the same. The particulate material has a substantially spherical, uniformly shaped configuration and comprises at least part of its surface layer occupied by a reaction product of polybutadiene and a silicone compound.
摘要:
Highly pure 3,3',4,4'-biphenyltetracarboxylic acid (BPTA) and dianhydride thereof (BPDA) are produced by heating crude BPTA to give BPDA, treating the BPDA with hot water to give highly pure BPTA, and in the case of highly pure BPDA, heat treating the pure BPTA to give highly pure BPDA.
摘要:
A positive type photoresist material comprises a polymer having structural units each represented by the following formula (I) of; ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.6 represents a hydrogen atom or a hydrocarbon residue having 1 to 12 carbon atoms, each or R.sup.4 and R.sup.5 represents a hydrogen atom, a hydroxyl group or a hydrocarbon residue having 1 to 12 carbon atoms and Z represents--CH.sub.2 --.sub.n which n indicates an integer of 0 to 4.
摘要:
A thrombin-binding substance derived from human tissue and having the characteristics of (a) molecular weight: 88,000.+-.20,000 in reduced condition and 71,000.+-.20,000 in unreduced condition; (b) isoelectric point: .sub.p H 4.2.+-.0.5; (c) affinity: strong for thrombin; (d) activities: capable of promoting the thrombin-catalyzed activation of protein C and prolonging clotting time; and (e) stability: stable over a .sub.p H range of 2 to 10 and stable to denaturing agents (sodium dodecylsulfate and urea) and to a pepsin treatment, is effectively useful for thrombolysis and anticoagulation.
摘要:
Disclosed is a fuel supply pump including a tappet structure body having a roller that contacts a cam and a tappet body disposed with a roller housing portion in which the roller is housed, with a pressure adjusting member for dispersing load force being interposed between the tappet body and a plunger. The pressure adjusting member includes a concave portion in a center portion of a surface that faces the tappet body and contacts the tappet body at the peripheral portion of the concave portion.