The invention relates to a rotary piston pump (1) for metering a coating agent in a coating installation, comprising several pump units (6-8), each having one cylinder (32) and one rotary piston (31) which carries out a tumbling action in the cylinder (32).

Rotary piston pump for metering a coating agent

A variable capacity exhaust gas turbocharger having a small thermal capacity and enabling the structure to be simplified. A exhaust gas inlet hardware (13) having an exhaust gas inlet body (11) in which an inner side flow passage (U1) communicating with an inner scroll passage (T1) and an outer side flow passage (U2) communicating with an outer scroll flow passage (T2) are formed and a flap valve (12) for opening and closing the outer side flow passage (U2) are formed at the exhaust gas inlet part of a turbine housing body (14) in which the inner scroll passage (T1) and the outer scroll flow passage (T2) are formed. A valve recess (11a) for disposing the flap valve (12) along the outer side flow passage (U2) and a seat (11b) for the flap valve for closing the outer side flow passage (U2) are formed in the exhaust gas inlet body (11). The flap valve (12) is rotatable about a rotating center positioned in the storage space of the valve recess (11a) between the position of the flap valve in contact with the seat (11b) and the position of the flap valve stored in the valve recess (11a).

Variable displacement exhaust turbocharger

PROBLEM TO BE SOLVED: To provide an automatic chemical feeder uniformly and stably discharging the chemical during discharge by incorporating a cam device setting stable the movement speed of the linear movement in changing the rotation movement to the linear movement SOLUTION: This automatic chemical feeder detects the using operation of a user by a sensor 32 to actuate a pump drive mechanism 40 and automatically feed the chemical in a liquid chemical vessel by a manual pump mechanism 23 The pump drive mechanism is provided with a cam device 43 having a cam plate 44 rotated by a motor 41 and a cam driven member 45 linearly reciprocating by interlocked with the rotation movement This feeder is characterized that a prescribed portion in the circumferential edge shape of the cam plate is formed of a spiral curve prescribed by an equation r=aθ [(r), θ, and (a) express a radius vector, a drift angle, and a constant respectively] in two-dimensional polar coordinates expression with the rotation center of the cam plate set to the origin

Cam device, automatic chemical feeder with the cam device, and tray fitting structure of automatic chemical feeder

PROBLEM TO BE SOLVED: To provide an oil pressure mechanism for power hydraulic tool capable of miniaturizing an electric motor for rotating the release cam 8 by alleviating increase in travelling stroke of a valve rod 7a when an oil pressure release valve 7 requiring the maximum torque for rotation drive of a release cam 8 starts opening and of shortening work time by reducing speed reduction ratio of rotation drive by the electric motor. SOLUTION: In the oil pressure mechanism for power hydraulic tool, a valve rod 7a reciprocally moves during one full rotation of a release cam 8 by being driven by a releasing electric motor, whereby an oil pressure release valve 7 returns to the closed state again through a opened state from a closed state and oil pressure of a cylinder 3 is released during the opened state of the oil pressure release valve 7. The release cam 8 employed for this configuration has a cam shape in which a moving stroke of the valve rod 7a at respective rotation angles θ from the closed state to a half rotation is always made smaller than that of the valve rod 7a at the same rotation angles θ from the closed state of the oil pressure release valve 7 in the case of employing a disc eccentric cam 6. COPYRIGHT: (C)2005,JPO&NCIPI

Oil pressure releasing mechanism for power hydraulic tool

The invention discloses a vehicle and a transmission of the vehicle. The transmission comprises a shell, a motor, a cam assembly and a plurality of stirring rods, wherein the motor is arranged in the shell. The cam assembly is connected with the motor and comprises a plurality of cams which are separated from one another. A cam groove is formed in the end face of one side of each cam. Each cam groove is provided with a farthest point which is the farthest from the center of the corresponding cam. The connecting line between the center of each cam and the farthest point of the cam is a center connecting line. The drop shadows of the center connecting lines on the cams on a reference plane parallel to the end faces of the cams do not overlap one another. All the stirring rods are arranged in the shell in a pivot mode. The first end of each stirring rod is matched with the corresponding cam groove, and the second end of each stirring rod is suitable for being matched with a shifting fork of the transmission. According to the transmission used for the vehicle, the gear engaging process, the gear disengaging process and the neutral gear process can be achieved by controlling the cam assembly through the single motor to drive the stirring rods to work, and therefore reliability of the transmission is improved, and the gear shifting speed of the transmission is increased, and overall design and overall arrangement of the transmission are facilitated.

Vehicle and transmission thereof

PURPOSE:To supply a non-pulsating flow of a fluid at a constant flow rate by the titled cam applied to a fluid pump, by a method wherein two followers are provided which perform equal-velocity reciprocating motions with a phase shift obtained by bisecting a cam period, and a forward path in each cam curve with which the followers make contact is set to be longer than a return path. CONSTITUTION:When a cam shaft 3 is rotated at a contact speed, wheels 11, 12 reciprocate rods 7, 8 at the same velocity while rolling concurrently with the rotation of heart cams 1, 2. Since each of the cams 1, 2 has the forward path slightly longer than the return path, a backward movement of the rod 8 having a phase shift of 180 deg. relative to th rod 7 is completed in the course of a forward movement of the rod 7, and subsequently the rod 8 enters a forward movement. After the forward movements of the rods 7, 8 are performed in an overlapping manner for a while, the rod 7 enters a backward movement. When the rods 7, 8 are connected to each piston of a fluid pump incorporating two sets of valve mechanisms and are operated, the fluid ejected is fed out at a constant flow rate and in such a pattern that both ends of discharge strokes are overlapped with each other, thereby pulsation is smoothed.

Twin equal-velocity reciprocating cam

PURPOSE:To reduce the top clearance of the variable capacity pump by a method wherein a guide, locating a variable supporting point at a position whereat the upper dead point of a piston upon moving the variable supporting point keeps the minimum clearance at all times with respect to a cylinder head, and a regulating device are provided. CONSTITUTION:Upon changing the stroke of the piston, the handle 37 of the supporting point regulating device 31 is rotated to move the variable supporting point 17 of a lever arm 16. When the supporting point 17 of the lever arm 16 is moved from a position O1 to the same O2, the lever arm 16 does not move and when the lever arm 16 is operated to the lower dead point about the supporting point 17, which is moved to the position O2, the tip end of the piston 11 is reciprocated with the stroke S2 after changing under keeping the upper dead point close to the cylinder head 8.

Variable delivery pump

PROBLEM TO BE SOLVED: To provide twin plunger pumps for enhancing operational reliability by almost completely eliminating pulsation of a delivery flow rate and delivery pressure, and eliminating an opening-closing operation type valve SOLUTION: In these twin plunger pumps connecting two plunger pumps in parallel to each other and being provided with an interlocking means of both plungers, the interlocking means is constituted so as to be actuated to close both a delivery port and a suction port at stopping time by stopping reciprocating motion of the plungers once in a transfer period of both delivery and suction strokes A disk-like rotary can is used as the interlocking means The respective base end sides of both plungers are brought into pressure contact with a ring-shaped can surface projected in the board surface peripheral edge part A flat surface having the prescribed length is arranged on the cam surface The suction port and the delivery port are oppositely arranged on the cylinder wall in the plunger pumps, and a cutout part for selectively communicating a cavity part of a cylinder with the suction port and the delivery port is arranged in a tip part of the reciprocating and rotating plungers

Twin plunger pumps

PROBLEM TO BE SOLVED: To feed liquid by attaching a slender pump on an outside part of a liquid storage tank since there are installation condition restrictions to directly insert the slender pump in the large liquid storage tank. SOLUTION: A liquid supply device having the slender pump externally attached thereon is formed by constructing a holder pipe 1 of the slender pump P by providing connection flanges 3, 3a connected with up-and-down direction attachment flanges F, Fa of the liquid storage tank T at two sections at an upper and a lower section of the outside part of a bottomed cylindrical pipe main body 2, connecting the up-and-down direction connection flanges 3, 3a and the up-and-down direction attachment flanges F, Fa to establish communication between the liquid storage tank T and the holder pipe 1, and inserting the pump main body D in the pipe main body 2. At a time of detachment, the slender pump P can be pulled out by detaching the holder pipe 1 from the liquid storage tank T and putting the same under lay down condition, and at a time of installation, the slender pump P can be installed on the liquid storage tank T by erecting the holder pipe 1 after inserting the slender pump P into the holder pipe 1 under the laid-down condition. COPYRIGHT: (C)2008,JPO&INPIT

Holder pipe for slender pump and liquid supply device externally having slender pump using holder pipe

PURPOSE:To inject a medical fluid in accordance with the rate of feed water, by generating pulses corresponding to the number of strokes of a displacement pump, and pulses in accord with the rate of flow water, and by controlling a motor by detecting the work load of a pump. CONSTITUTION:The primary pulse generating circuit 6 to generate the number of pulses corresponding to the number of strokes of a displacement pump (not shown), the secondary pulse generating circuit 11 to generate the number of pulses according to the rate of flow water, and a counter 8 to count the pulses from the primary pulse generating circuit 4 are provided to the above-mentioned unit, respectively. And the unit is composed to detect the work load of a displacement pump, and to control a motor 1, based on the numerical value counted by a counter 8 and the number of pulses from the secondary pulse generating circuit 11. With such an arrangement, the rate of medical fluid which is proportional to the rate of flow water can certainly be injected.

Control unit for injecting medical fluid

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