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JP2562844B2 |
A circumferential flow type fuel pump in which an impeller (42) is rotated by engaging a hole (42b) disposed on the impeller (42) with a rotating shaft (3a) having a diameter smaller than that of the hole (42b), wherein the center Q of t...
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JPH08284770A |
To reduce vapor lock to prevent an engine stall by providing a vent means inside a pumping means so as to be communicated with passages in an impeller in turn as the impeller is rotated, to make vapor escape from impeller pockets and a p...
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JPH08277793A |
PURPOSE: To enhance efficiency of a fuel pump composed of a Westco pump by minimizing the loss caused by friction between an inner surface of a passage for returning fuel into a vane groove and the fuel. CONSTITUTION: An impeller 17 is c...
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JPH08261085A |
To reduce noise and vibration, enable stable loading of an armature and a pump rotor, and provide an electric fuel pump with long service life by providing an armature so that only one end of the armature can be pivotally supported rotat...
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JP2536571B2 |
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JP2536665B2 |
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JPH08177778A |
PURPOSE: To exhibit a high head function comparable with a pump having a guide blade by recovering sufficient dynamic pressure without enlarging an outside dimension so much. CONSTITUTION: Diffuser parts to recover dynamic pressure are r...
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JPH08177777A |
To resolve problems, such as excessive pressure and excessive flow rate under conditions of low engine output by locating an impeller in a central part within a cavity in a housing and providing two bulkhead members adjacent to both face...
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JPH08182243A |
PURPOSE: To obtain a motor in which noise is reduced through a simple structure and a fuel pump using it. CONSTITUTION: The rotary shaft 21 of a rotor at a motor section, disposed in a fuel pump, is supported by a thrust bearing 32 and a...
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JPH08177776A |
PURPOSE: To reduce a noise (a flowing sound) of a fluid pulsation component by forming the passage area of a delivery port larger than the passage area of a pump passage in a Westco pump having an impeller which is arranged in a pump cas...
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JPH08182258A |
PURPOSE: To prevent the shortcircuit among the segments of a motor-driven fuel pump having an armature wherein a communicator divided into the plurality of the segments by slits is formed, by shielding the slits with a shielding mem ber....
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JPH08170597A |
PURPOSE: To prevent generation of a stagnation part on the upper side of a diaphragm by providing a diaphragm formed in such a manner that the sectional form is gradually constricted as it is extended in the outer peripheral direction an...
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JP2504042B2 |
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JPH08144986A |
PURPOSE: To prevent a drop in the velocity of a whirling flow and enhance pump efficiency by improving the shape of the wall of a flow passage. CONSTITUTION: This impeller type fuel pump is equipped with a pump section formed out of a ca...
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JPH08117895A |
To enable reliable fixation of an insert part and a tubular part in the method for manufacturing a junction between both parts by using a edge bending part. The tubular part 10 is covered and inserted with a tubular tool part 36 having a...
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JPH08121374A |
To provide a feed device, capable of facilitating assembly by making a feed member movable in the direction of rotary axial line in a pump chamber. Although a wall 34 on one side is movable in the direction of a rotary axial line 25 of a...
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JPH08109894A |
PURPOSE: To perform sufficient purification through the feed of a constant small amount of water to an aerating tank even when an amount of sludge flowing in a united purifying tank is fluctuated. CONSTITUTION: In a submerged pump device...
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JPH08109890A |
PURPOSE: To reduce a cost through simplification of processing and to reduce the wasteful use of a material during exchange of a part by arranging a draining part at a casing cover and forming the casing cover and the draining part separ...
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JPH0826867B2 |
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JPH0826868B2 |
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JPH088315Y2 |
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JPH088314Y2 |
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JPH0819914B2 |
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JPH0849683A |
To avoid that mutually axially facing transporting passage ends are simultaneously and impactingly controlled for opening or closing, and to prevent generation of large noise caused by resulting strong pressure pulsation. Mutually axiall...
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JPH085355Y2 |
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JPH0842479A |
PURPOSE: To improve pump efficiency by improving the sliding property and the sealing property of an impeller. CONSTITUTION: This impeller type fuel pump is integratedly provided with a motor part and a pump part, and fuel pressure is ra...
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JPH0842419A |
PURPOSE: To perform the discharge of vapor in an efficient manner by exhausting the vapor only at the time of high temperature and low pressure being abundant in the vapor going out. CONSTITUTION: A motor part and a pump part are integra...
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JPH0835498A |
PURPOSE: To prevent any leakage of fuel at the isolation part of Wesco type fuel pump and improve the pump efficiency. CONSTITUTION: A fuel pump is provided with a pump housing having at least one pump room provided with a nearly C lette...
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JPH0810608B2 |
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JPH089993B2 |
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JPH089995B2 |
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JPH07332275A |
PURPOSE: To prevent the idling of solid grains even if entering an annular space on the back face side of an impeller, along with pumped liquid in the case of using a centrifugal pump as a slurry pump with the high intermixture ratio of ...
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JPH0755350Y2 |
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JPH07332086A |
PURPOSE: To correctly switch fluid discharge capacity according to fluid temperature by fitting a main rotor with low discharge capacity and a sub-rotor with high discharge capacity on a common pump shaft and connecting the main rotor to...
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JPH07117070B2 |
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JPH07117058B2 |
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JPH07117068B2 |
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JPH07117057B2 |
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JPH07111189B2 |
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JPH07111190B2 |
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JPH07310692A |
PURPOSE: To suppress up and down movement and swinging of an armature due to vibration of an automobile so as to prevent noise and abrasion generated by contact of an armature shaft with a thrust bearing and a radial bearing in a motor-d...
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JPH0749033Y2 |
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JPH07103864B2 |
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JPH07279881A |
PURPOSE: To improve the method of arranging recesses in an impeller producing hydraulic cushions for avoiding the inclination of the impeller in a very slight axial gap between the impeller and the end wall of a pumping chamber and conta...
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JPH07269487A |
PURPOSE: To avoid a dead space generated on the basis of throttle filling, and avoid an unfavorable influence of a forcibly feeding characteristic in a second feed passage. CONSTITUTION: A feed passage 20 having a flow-out opening 25, on...
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JPH07269436A |
PURPOSE: To efficiently discharge vapor and improve pump efficiency by discharging the vapor from both sides of an impeller. CONSTITUTION: A motor is integrated with a pump. A disc-like impeller 4 is rotatably arranged in a pump case 3a ...
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JPH0744788Y2 |
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JPH0794833B2 |
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JPH0792071B2 |
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JPH07253095A |
PURPOSE: To obtain a pump housing for a volute pump constituted so as to increase efficiency and a head, in a particularly small capacity flow rate. CONSTITUTION: A pump housing is divided into an actually circular lower side portion 6 f...
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