• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A device for detaching and removing the detachable mouth-piece or disposable tip of a pipette, said pipette comprising a handle portion, in whose interior or at whose bottom end are attached a cylinder portion with tip tube, a piston fitted into the cylinder portion, which piston can be pressed down against a spring force by means of a press button and a piston rod, said spring being arranged so that it restores the piston to the upper position, and that a sleeve-shaped pusher or similar pushing means operated by an inertia means is fitted around the tip tube of the pipette, which pusher can move in the longitudinal direction of the tip tube of the pipette.
    公开号:SU845757A3
    申请号:SU792798429
    申请日:1979-08-03
    公开日:1981-07-07
    发明作者:Тервамяки Юкка
    申请人:Коммандииттиихтие Финнпипеттеосмо A.Суованиеми (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the construction of pipettes and can be used in laboratory practice for measuring and dispensing certain doses of chemical reagent solutions and test liquids. A pipette is known that contains a vertical cylindrical body with an expanded fan base and a narrowed lower part, in which, respectively, cylindrical chamber and channel coaxially arranged and interconnected, coaxially fixed to the upper part of the body, arranged in a handle along its axis and entering with its working end into the chamber and the channel, the spring-loaded rod connected at one end to the upper part of the piston, the push button attached to the second end of the rod is replaceable A tip attached to the lower part of the body, the device for removing the tip made in the form of a spring-loaded sleeve coaxially on the body and located above the tip 1. A disadvantage of the known pipette is the complexity of its design and the duration of operations, by removing the tip. In order to simplify the design of accelerating the removal of the tip by shaking the pipette in the vertical direction, the upper part of the sleeve is filled with a bulge, and the device for removing the tip is provided with a lever with a pressure lug abutting the upper end of the sleeve and a counterweight fixed at one end of the lever The keys are mounted on the body under the handle with the possibility of reciprocating angular movement in the vertical direction, and in the handle there is an eccentric located cylindrical channel The device for removing the tip is located in the handle channel successively one above the other by a spring fixed with one of its ends on the upper part of the handle movable head suspended at the second end of the spring and spring-loaded pusher with a stem fixed in the sleeve thickening. . FIG. 1 shows a pipette, longitudinal section; FIG. 2 - the same, side view; in fig. 3 - the same
    with partial cuts according to the second embodiment; in fig. 4 is the same, with partial cuts according to the third embodiment.
    The pipette contains a vertical cylindrical body 1 with an expanded upper and narrowed lower parts, in which, respectively, cylindrical chamber 2 and channel 3, a hollow handle are coaxially arranged and interconnected.
    4, coaxially mounted on the upper part of the body, spring loaded by yen
    5, located in the handle 4 along its axis and entering with its working end into the chamber 2 and the channel 3, a spring-loaded rod 6 connected by one end of its own with the top of the piston 5, a push button 7 attached to the second end of the rod 6, a replaceable tip 8, worn on the lower part of the body, and a device for removing the tip, made in the form of a spring-loaded sleeve 9, coaxially worn on the body and located on the tip 8. The upper part of the sleeve 9 is thickened. The device for removing the tip is provided with a lever 10 with a pressure protrusion 11, upirakhtsims in the upper end of the sleeve 9,
    and a counterweight 12, cantilever-mounted on one end of the lever 10, which is mounted on the housing under the handle 4 with the possibility of reciprocating angular movement in the vertical direction. The handle 4 has an eccentrically located cylindrical channel 13. The device for removing the tip is provided with a spring 14 arranged in a channel 13 of the handle 4 successively one above the other, fixed at one end on the top of the handle 4, with a movable head 15 suspended at the second end spring 14, and a spring-loaded pusher 16 with a rod 17 fixed in the thickening of the sleeve 9.
    When working with a pipette, the button 7 is pressed, so that, together with the button 7, the rod b and the piston 5 are moved down until the button 7 rests against the stop 18.
    The replaceable tip 8 is disconnected in such a way that the pipette oscillates in the longitudinal direction with proper fast or sharp movement in arrow A, whereby the sleeve 9 to remove the tip 8 under the action of the load 19 placed inside the sleeve 9 continues to move downward, and the lower end of the sleeve 9 hits the upper edge of the tip 8, as a result of which it detaches from its friction connection and bounces in the direction shown in the same arrow A, for example, into the waste box. After oscillating movement and movement to detach the tip 8, the spring 20 returns the sleeve 9 to the upper position. The removal of the tip 8 is carried out by using the moment of inertia of the load 19. The spring 20 of the sleeve 9 is a release spring, but for the sleeve 9 a compression spring can also be used with minor changes in the design, for example, instead of one spring 20, there can be several parallel springs. Sleeve 9 can be made of the same metal as the load 19.
    According to the second variant, the pipette is oscillated in the direction of the arrow A. The counterweight 12 reciprocates and strikes the weight with the tip 8, which separates from the part of the piston 5. Here you can perform a weak spring 20 to release the counterweight 12 and the sleeve 9 up or down, or two compression springs, with which the counterweight 12 and the sleeve 9 are kept in the pitch state approximately in the middle of their movement. Instead of spring 20 or springs, other elastic means such as rubber rings or pillows can also be used as restraints for the movement of sleeve 9.
    When the pipette communicates with a hand the proper oscillatory motion, mo. The inertia of the counterweight 12 with the help of the lever 10 and the protrusion 11 creates a force on the upper edge of the sleeve, as a result of which it pushes the tip 8 further.
    In the third variant, when the pipette communicates an oscillatory movement in the longitudinal direction, the striker 15 installed freely in the upper part of the channel 13 rises with the onset of the oscillatory movement and its upper part, and at the end of the oscillatory movement it hits the upper end of the pusher 16, due to which a sharp downward displacement of the sleeve 9. The spring 21 returns the sleeve 9 and the pusher 16 to the upper position. The locking disk 22 acts as an upper stop and the movement limiter of the pusher 16. The spring 14 cm thickens the movement of the striker 15 and reduces t noise.
    The embodiments of the device according to the present invention are not limited to the examples described above, but their combinations and other embodiments may be numerous, while the essence of the invention remains the same.
    An operator working with a pipette equipped with a tip remover according to the present invention can fill the pipette with a sample and remove the tip of all
    with one hand, but if he wishes, he can move the tip remover with the other hand.
    权利要求:
    Claims (3)
    [1]
    1. A pipette containing a vertical cylindrical body with an expanded upper and narrowed lower parts, in which, respectively, cylindrical chambers and a channel, a hollow handle coaxially mounted on the upper part of the body, spring-loaded piston arranged in the handle along its axis and entering the working end of the chamber and the channel, spring-loaded arcing, one end connected to the upper part of the piston, a push button fixed on the second end of the stem, replaceable A finisher, worn on the lower part of the body, and a device for removing the tip, made in the form of a spring-loaded sleeve, coaxially worn on the body and located above the tip, characterized in that, in order to simplify the design and accelerate the removal of the tip by shaking the pipette in vertical direction, the upper part of the Tule is made with thickening.
    [2]
    2. A pipette according to claim 1, characterized in that the device for removing the tip is provided with a lever with a pressure ledge, upravshchiks in the upper, end of the sleeve and a counterweight, cantilever mounted on one end, a lever that is mounted on the case under the handle with the possibility reciprocating angular displacement in the vertical direction.
    [3]
    3. Pipette according to claim 1, characterized in that an eccentrically located
    the cylindrical channel and the device for removal of the tip are provided with handles arranged in the channel successively one above the other by a spring fixed at one end to the top of the handle, movable, suspended at the second end of the spring, and spring-loaded pushers with the stem fixed in the thickened1 and bushings .
    Information sources,
    taken into account in the examination
    1.. For the sake of G 2545237, cl. B 01 L 3/02, published 01/27/77 (prototype).
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    类似技术:
    公开号 | 公开日 | 专利标题
    SU845757A3|1981-07-07|Pipet
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    US3465835A|1969-09-09|Pin-driving device
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    同族专利:
    公开号 | 公开日
    DD145373A5|1980-12-10|
    JPS5524598A|1980-02-21|
    FR2432338B1|1983-12-09|
    US4283950A|1981-08-18|
    FR2432338A1|1980-02-29|
    DE2928959A1|1980-02-21|
    FI56937B|1980-01-31|
    FI56937C|1980-05-12|
    GB2033780B|1983-03-30|
    GB2033780A|1980-05-29|
    引用文献:
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    FR2287941B1|1974-10-15|1977-11-10|Marteau D Autry Eric|
    FR2351402B1|1976-05-10|1981-03-20|Marteau Dautry Eric|
    FI57540C|1977-02-17|1980-09-10|Suovaniemi Finnpipette|ANORDNING FOER ATT LOESGOERA OCH AVLAEGSNA EN ENGAONGSSPETS PAO EN PIPETT|
    US4096751A|1977-06-15|1978-06-27|Oxford Laboratories Inc.|Hand-held micropipettor with fluid transfer volume adjustment mechanism|JPS5919736B2|1981-02-09|1984-05-08|Nichiryoo Kk|
    FR2515339B1|1981-10-28|1984-01-20|Marteau D Autry Eric|
    JPS61167941U|1985-04-05|1986-10-18|
    US4744955A|1986-08-08|1988-05-17|Shapiro Justin J|Adjustable volume pipette sampler|
    DE3635598C2|1986-10-20|1989-03-09|Eppendorf Geraetebau Netheler + Hinz Gmbh, 2000 Hamburg, De|
    US4863695A|1987-04-28|1989-09-05|Hewlett-Packard Company|Pipette assembly|
    JP2554666B2|1987-09-18|1996-11-13|株式会社ニチリョー|Variable pipette|
    US4965050A|1989-01-18|1990-10-23|Ballard Medical Products|Adaptation of pipetter|
    JPH05501222A|1989-10-20|1993-03-11|
    US5104624A|1989-10-20|1992-04-14|Costar Corporation|Pipetter|
    US5209128A|1989-12-18|1993-05-11|The United States Of America As Represented By The Department Of Health And Human Services|Safety pipette and adaptor tip|
    US5058441A|1989-12-18|1991-10-22|The United States Of America As Represented By The Department Of Health And Human Services|Safety pipette and adaptor tip|
    US5330717A|1991-05-09|1994-07-19|Alfred Berteloot|Electropneumatic apparatus for sampling rapidly predetermined volumes of a mixture, to be connected to a computer|
    US5272926A|1991-11-13|1993-12-28|Wilkins Judd R|Microbial retrieval and sampling pipette with a removable cover|
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    US6532837B1|2000-02-03|2003-03-18|Rainin Instrument, Llc|Pipette device with tip ejector utilizing stored energy|
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    US7416704B2|2000-06-26|2008-08-26|Vistalab Technologies, Inc.|Handheld pipette|
    FIU20010274U0|2001-07-06|2001-07-06|Biohit Oyj|The suction device|
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    CN108458897B|2018-04-12|2020-07-24|甘肃衍河石油管道涂层有限公司|Production process of anticorrosive paint for petroleum conveying pipeline|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI782401A|FI56937C|1978-08-04|1978-08-04|PIPETT ANORDNING FOER ATT AVLAEGSNA EN ENGAONGSSPETSBEHAOLLARE FRAON EN PIPETT|
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