CA2130858C - Orbital shaking attachment - Google Patents
Orbital shaking attachment Download PDFInfo
- Publication number
- CA2130858C CA2130858C CA002130858A CA2130858A CA2130858C CA 2130858 C CA2130858 C CA 2130858C CA 002130858 A CA002130858 A CA 002130858A CA 2130858 A CA2130858 A CA 2130858A CA 2130858 C CA2130858 C CA 2130858C
- Authority
- CA
- Canada
- Prior art keywords
- plate
- base
- platform
- orbital shaking
- orbital
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/45—Magnetic mixers; Mixers with magnetically driven stirrers
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Accessories For Mixers (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
An orbital shaking attachment can be fitted or removed from a magnetic stirrer thereby giving the stirrer the extra function of orbital shaking in addition to its primary function of magnetic stirring. The principal of he invention could also be used to make a dedicated orbital shaker for other applications such as in an over, incubator or liquid filled tank. The orbital shaking attachment includes a top-plate/platform with a circular magnet attached centrally to its underside and a base-plate with a central circular hole. The two plates are separated by ball bearings which are able to roll around orbitally in bearing cups on both plates. When operated the base-plate is static and the top-plate/platform moves orbitally. The device is constructed mainly from non-ferrous material except for the circular magnet and ball bearings.
Description
.. ~ ~ ~~~o~~~
File No. C9418 ORBITAL SHAKING ATTACHMENT
BACKGROUND OF THE INVENTION
This invention relates to a magnetically coupled and driven orbital shaking attachment.
Orbital shakers are well known devices comprising a flat table or platform which is moved in a circular gyratory motion, usually by an electric motor. Flasks containing liquid are placed on the table and its orbital motion acts on the liquid in the flask to give a swirling, shaking movement to stir and mix the liquid.
These machines are relatively expensive and are generally exclusive for the one function.
SUN~IARY OF THE INVENTION
The present invention consists of a magnetically coupled and driven table which is used as an attachment to another device, namely a magnetic stirrer. Magnetic stirrers comprise an electric motor with a magnet fixed horizontally to one end of the motor shaft. The rotating magnet is placed in close proximity to the base of a flask of liquid in which there is a magnetic bar. The magnetic bar will follow the motion of the driven magnet and provide a stirring action to the.liquid. The driven magnet on a magnetic stirrer is a form of power which can be magnetically coupled to the present invention thereby giving the dual function of magnetic stirring or orbital shaking to a magnetic stirrer. Moreover, if the magnetic stirrer incorporates a heater, then this function can also be used on the orbital shaking device. The present invention could also be placed on the bottom of a tank of liquid with the magnetic coupling being made by a rotating magnet mounted in close proximity to the outside of the base of the tank. The principal of this invention could also be applied to make a dedicated orbital shaking machine that could be used within an oven, incubator, flameproof area or any other vessel or tank where, for example, the use of electrical equipment would be a hazard and by using the same type of rotating magnetic coupling on the outside of such a container as the means of propulsion.
According to the present invention, there is provided an orbital shaking attachment comprising a top-plate/platform having a circular magnet attached to an underside surface thereof, and a plurality of first bearing cups also attached to the underside surface adjacent the periphery thereof; a base-plate including a plurality of second bearing cups attached to an upper surface thereof; each first bearing cup being vertically aligned with a corresponding second bearing cup, each pair of vertically aligned first and second bearing cups accommodating therebetween a loose fitting ball bearing, the ball bearings separating the top-plate/platform vertically from the base-plate and allowing the top-plate/platform to move in a discrete orbital motion when the circular magnet is magnetically coupled to a rotating magnet of a magnetic stirrer.
Preferably, the invention uses eight bearing cups, one fitted to each corner of the two plates and in exact relative alignment, and four ball bearings sized to roll around the cups freely, to provide the circular orbital motion to the top-plate/platform. The number and arrangement of ball bearings and cups may be varied from this basic design to accommodate different dimensions or load capacities. A means of attachment to a magnetic stirrer will keep the base-plate stationary and allow the top-plate/platform to travel in a discrete orbital motion when the magnetic stirrer is operated. The device must be constructed mainly from non-ferrous material such as aluminum with the exception of the circular magnet attached to the top-plate/platform and possibly the ball bearings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a side view of the orbital shaking attachment fixed on a simple schematic representation of a magnetic stirrer showing the internal arrangement of the moving File No. C9418 magnet on the magnetic stirrer.
Figure 2 shows an exploded diagram of the orbital shaking attachment in perspective, showing the constituent parts of the device looking from below.
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawing, the orbital shaking attachment comprises a base-plate 5 with four ball bearing cups 3, and a central hole 10, sized to accommodate the travel of the circular magnet 2 attached to the top-plate/platform 1.
Figures 1 and 2 show a means of securing the base-plate 5 to different sizes of magnetic stirrers using adjustable eccentric cams 6, but other means may be used such as straps, brackets, screws, designed to fit a particular magnetic stirrer or similar means (not shown). A top-plate/platform 1 with four bearing cups 3 positioned in exact alignment with the bearing cups on the base-plate, a circular magnet 2 attached to the central underside of the top-plate/platform and four suitably sized ball bearings 4 to fit between top-plate/platform 1 and base-plate 5 and running loosely in the bearing cups 3 to allow an orbital motion.
In order to operate the shaker, the base-plate 5 is suitably positioned and secured on the magnetic stirrer operating platform as in Figure 1. The four ball bearings 4 are placed into the base-plate bearing cups 3 and the top-plate/platform 1 lowered onto the ball bearings 4, lining up the bearing cups on the top and base-plates. When the magnetic stirrer 9 is operated the magnet 7 turns and couples to the circular magnet 2 on the top-plate/platform 1 and allows it to File No. C9418 move in an orbital motion as determined by the ball bearings 4 running in the bearing cups 3. To dismount the orbital shaker from the magnetic stirrer the above steps are carried out in reverse order.
File No. C9418 ORBITAL SHAKING ATTACHMENT
BACKGROUND OF THE INVENTION
This invention relates to a magnetically coupled and driven orbital shaking attachment.
Orbital shakers are well known devices comprising a flat table or platform which is moved in a circular gyratory motion, usually by an electric motor. Flasks containing liquid are placed on the table and its orbital motion acts on the liquid in the flask to give a swirling, shaking movement to stir and mix the liquid.
These machines are relatively expensive and are generally exclusive for the one function.
SUN~IARY OF THE INVENTION
The present invention consists of a magnetically coupled and driven table which is used as an attachment to another device, namely a magnetic stirrer. Magnetic stirrers comprise an electric motor with a magnet fixed horizontally to one end of the motor shaft. The rotating magnet is placed in close proximity to the base of a flask of liquid in which there is a magnetic bar. The magnetic bar will follow the motion of the driven magnet and provide a stirring action to the.liquid. The driven magnet on a magnetic stirrer is a form of power which can be magnetically coupled to the present invention thereby giving the dual function of magnetic stirring or orbital shaking to a magnetic stirrer. Moreover, if the magnetic stirrer incorporates a heater, then this function can also be used on the orbital shaking device. The present invention could also be placed on the bottom of a tank of liquid with the magnetic coupling being made by a rotating magnet mounted in close proximity to the outside of the base of the tank. The principal of this invention could also be applied to make a dedicated orbital shaking machine that could be used within an oven, incubator, flameproof area or any other vessel or tank where, for example, the use of electrical equipment would be a hazard and by using the same type of rotating magnetic coupling on the outside of such a container as the means of propulsion.
According to the present invention, there is provided an orbital shaking attachment comprising a top-plate/platform having a circular magnet attached to an underside surface thereof, and a plurality of first bearing cups also attached to the underside surface adjacent the periphery thereof; a base-plate including a plurality of second bearing cups attached to an upper surface thereof; each first bearing cup being vertically aligned with a corresponding second bearing cup, each pair of vertically aligned first and second bearing cups accommodating therebetween a loose fitting ball bearing, the ball bearings separating the top-plate/platform vertically from the base-plate and allowing the top-plate/platform to move in a discrete orbital motion when the circular magnet is magnetically coupled to a rotating magnet of a magnetic stirrer.
Preferably, the invention uses eight bearing cups, one fitted to each corner of the two plates and in exact relative alignment, and four ball bearings sized to roll around the cups freely, to provide the circular orbital motion to the top-plate/platform. The number and arrangement of ball bearings and cups may be varied from this basic design to accommodate different dimensions or load capacities. A means of attachment to a magnetic stirrer will keep the base-plate stationary and allow the top-plate/platform to travel in a discrete orbital motion when the magnetic stirrer is operated. The device must be constructed mainly from non-ferrous material such as aluminum with the exception of the circular magnet attached to the top-plate/platform and possibly the ball bearings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a side view of the orbital shaking attachment fixed on a simple schematic representation of a magnetic stirrer showing the internal arrangement of the moving File No. C9418 magnet on the magnetic stirrer.
Figure 2 shows an exploded diagram of the orbital shaking attachment in perspective, showing the constituent parts of the device looking from below.
DETAILED DESCRIPTION OF THE INVENTION
Referring to the drawing, the orbital shaking attachment comprises a base-plate 5 with four ball bearing cups 3, and a central hole 10, sized to accommodate the travel of the circular magnet 2 attached to the top-plate/platform 1.
Figures 1 and 2 show a means of securing the base-plate 5 to different sizes of magnetic stirrers using adjustable eccentric cams 6, but other means may be used such as straps, brackets, screws, designed to fit a particular magnetic stirrer or similar means (not shown). A top-plate/platform 1 with four bearing cups 3 positioned in exact alignment with the bearing cups on the base-plate, a circular magnet 2 attached to the central underside of the top-plate/platform and four suitably sized ball bearings 4 to fit between top-plate/platform 1 and base-plate 5 and running loosely in the bearing cups 3 to allow an orbital motion.
In order to operate the shaker, the base-plate 5 is suitably positioned and secured on the magnetic stirrer operating platform as in Figure 1. The four ball bearings 4 are placed into the base-plate bearing cups 3 and the top-plate/platform 1 lowered onto the ball bearings 4, lining up the bearing cups on the top and base-plates. When the magnetic stirrer 9 is operated the magnet 7 turns and couples to the circular magnet 2 on the top-plate/platform 1 and allows it to File No. C9418 move in an orbital motion as determined by the ball bearings 4 running in the bearing cups 3. To dismount the orbital shaker from the magnetic stirrer the above steps are carried out in reverse order.
Claims (3)
1. An orbital shaking attachment comprising:
a top-plate/platform having a circular magnet attached to an underside surface thereof, and a plurality of first bearing cups also attached to said underside surface adjacent the periphery thereof;
a base-plate including a plurality of second bearing cups attached to an upper surface thereof;
each said first bearing cup being vertically aligned with a corresponding second bearing cup, each pair of vertically aligned first and second bearing cups accommodating therebetween a loose fitting ball bearing, said ball bearings separating said top-plate/platform vertically from said base-plate and allowing said top-plate/platform to move in a discrete orbital motion when said circular magnet is magnetically coupled to a rotating magnet of a magnetic stirrer.
a top-plate/platform having a circular magnet attached to an underside surface thereof, and a plurality of first bearing cups also attached to said underside surface adjacent the periphery thereof;
a base-plate including a plurality of second bearing cups attached to an upper surface thereof;
each said first bearing cup being vertically aligned with a corresponding second bearing cup, each pair of vertically aligned first and second bearing cups accommodating therebetween a loose fitting ball bearing, said ball bearings separating said top-plate/platform vertically from said base-plate and allowing said top-plate/platform to move in a discrete orbital motion when said circular magnet is magnetically coupled to a rotating magnet of a magnetic stirrer.
2. An orbital shaking attachment as defined in claim 1 wherein said base-plate is provided with a central hole suitably sized to accommodate the travel of said circular magnet, thus allowing said circular magnet to be as close as possible to the rotating magnet of such magnetic stirrer.
3. An orbital shaking attachment as defined in claim 1 or claim 2 wherein said base-plate includes means for securing said base-plate to an operating platform of a magnetic stirrer whereby said base-plate remains stationary when said attachment is operated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002130858A CA2130858C (en) | 1994-08-25 | 1994-08-25 | Orbital shaking attachment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA002130858A CA2130858C (en) | 1994-08-25 | 1994-08-25 | Orbital shaking attachment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2130858A1 CA2130858A1 (en) | 1996-02-26 |
| CA2130858C true CA2130858C (en) | 2000-10-31 |
Family
ID=4154234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002130858A Expired - Fee Related CA2130858C (en) | 1994-08-25 | 1994-08-25 | Orbital shaking attachment |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2130858C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578502B (en) * | 2018-12-29 | 2024-04-02 | 北京星际荣耀空间科技股份有限公司 | Two-dimensional vibration reduction platform |
-
1994
- 1994-08-25 CA CA002130858A patent/CA2130858C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2130858A1 (en) | 1996-02-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |