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公开(公告)号：CA926698A
公开(公告)日：1973-05-22
申请号：CA59278
申请日：1969-08-12
Applicant: MICROMEDIC SYSTEMS INC
Abstract: 1281353 Reciprocating pumps MICROMEDIC SYSTEMS Inc 15 Aug 1969 [16 Aug 1968] 40900/69 Heading F1A A pump, e. g. for metering liquids in laboratories, comprises a piston 3 reciprocable in a cylinder 1 in synchronism with a rotary face valve 6 driven by a wheel 72, the cylinder 1, valve 6 and a coupling member 30 being mounted in a casing 37, 38 which is removably mounted by bayonet pins 50, 51 in bayonet slots 53, 54 in a ring 55 pivoted in a frame 59, a releasable locking pin, Fig. 4 (not shown), preventing rotation of the casing in the ring. A spring 34 biases valve member 6 against valve seat 5 to provide sealing when the casing is detached from the frame, additional spring-loading during operation being provided by spring 63 acting through ball 60 and coupling member 30. Valve 6 may be of P. T. F. E. and has grooves 25, 26 for alternately connecting cylinder port 12 to inlet and outlet ports 20 in seat 5, Figs. 2 and 3 (not shown). The grooves 25, 26 may be arranged in the form of a cross, or may be arcuate. Coupling member 30 has sawtooth projections, Figs. 4 and 5 (not shown), for engaging drive pins 70, 71 of wheel 72. The locking pin passes through one of the trunnions supporting ring 55 and is spring-loaded into an axial slot in casing 38, a bevel 69 depressing the pin for entry of the casing into the ring.
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公开(公告)号：SE342877B
公开(公告)日：1972-02-21
申请号：SE1135669
申请日：1969-08-15
Applicant: MICROMEDIC SYSTEMS INC
Abstract: 1282004 Linkwork; bearings MICROMEDIC SYSTEMS Inc 15 Aug 1969 [16 Aug 1968] 40899/69 Headings F2A and F2K Rotation of an input shaft 3 is converted into reciprocating movement, of variable amplitude, of an output member 43 by a mechanism comprising a crank-pin in the form of a rod 14 which is driven in such a way as to describe a core having an axis 26, Fig. 2, a runner 27 within which the rod 14 can slide, screw-and-nut mechanism 46, 47 for adjusting the longitudinal position of the rod 14 relative to the runner 27, and a yoke member 42 connected to output member 43 and to a rod 31 which guides the runner 27 and is constrained to move in a direction 39 perpendicular to the core axis 26. The rod 14 is secured at one end to a plate 15 which carries slide blocks 10, 11 which are disposed in grooves 8, 9 in a cup-shaped member 5 secured to the input shaft 3. The other end of rod 14 carries an eccentric lug 17 on which is secured a ball 18 retained by a plate 21 in a socket 19 formed in a slide member 20. Rotation of a knob 65 causes rotation of a sleeve 48 carrying the nut 47 and axial movement of slide 20, thereby causing axial movement of rod 14 to vary the amplitude of reciprocation of the output member 43. In the position shown, the rod 14 is parallel to the axis of cup-member 5, and it may be located in that position by a ball 70. Thus the upper limit of reciprocation remains fixed. The sleeve 48 is rotatably mounted with respect to a support 60 by a resilient bearing formed by a triangular frame comprising resilient rods 51, 52 and 53. The ends of the rods are held in the support 60 whilst their middle points co-operate with a circular groove 64 in the sleeve 48.
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公开(公告)号：SE357827B
公开(公告)日：1973-07-09
申请号：SE1135769
申请日：1969-08-15
Applicant: MICROMEDIC SYSTEMS INC
Abstract: 1281353 Reciprocating pumps MICROMEDIC SYSTEMS Inc 15 Aug 1969 [16 Aug 1968] 40900/69 Heading F1A A pump, e. g. for metering liquids in laboratories, comprises a piston 3 reciprocable in a cylinder 1 in synchronism with a rotary face valve 6 driven by a wheel 72, the cylinder 1, valve 6 and a coupling member 30 being mounted in a casing 37, 38 which is removably mounted by bayonet pins 50, 51 in bayonet slots 53, 54 in a ring 55 pivoted in a frame 59, a releasable locking pin, Fig. 4 (not shown), preventing rotation of the casing in the ring. A spring 34 biases valve member 6 against valve seat 5 to provide sealing when the casing is detached from the frame, additional spring-loading during operation being provided by spring 63 acting through ball 60 and coupling member 30. Valve 6 may be of P. T. F. E. and has grooves 25, 26 for alternately connecting cylinder port 12 to inlet and outlet ports 20 in seat 5, Figs. 2 and 3 (not shown). The grooves 25, 26 may be arranged in the form of a cross, or may be arcuate. Coupling member 30 has sawtooth projections, Figs. 4 and 5 (not shown), for engaging drive pins 70, 71 of wheel 72. The locking pin passes through one of the trunnions supporting ring 55 and is spring-loaded into an axial slot in casing 38, a bevel 69 depressing the pin for entry of the casing into the ring.
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