 Connecting arrangement |
| I claim: 1. A structural connecting arrangement comprising a first structural element having a ... |
|
| Building element |
| The object of the present invention is to provide a building element which can be used as a ... |
|
| Door glass weather strip for automobiles |
| A door glass weather strip for automobiles according to the invention is constituted in that a ... |
|
| Weather strip for use in automobile |
| It is therefore an object of this invention to provide a weather strip for automobiles in which a ... |
|
| Combination belt and disk sander machine |
| OF THE PREFERRED EMBODIMENT With continuing attention to the drawing wherein applied reference ... |
|
| Abrasive wheel |
| Consequently, the object of the present invention is to provide and abrasive wheel for a grinding ... |
|
| Key cutter |
| The present invention is a machine for cutting keys for various types of locks and wherein the ... |
|
| Router device |
| This invention pertains to a router device, and in particular, to such a device which has a ... |
|
| Hydraulic releasing tool with plug |
| OF THE DRAWINGS Referring to FIGS. 1 through 4, there is shown hydraulic releasing apparatus, ... |
|
| Facing structures for building |
| Therefore, a principal object of the present invention is to provide a facing structure for ... |
|
|
Settling apparatus
| Details |
Inventors: Sundstrom, Gustaf F.;
Assignee: Stiftelsen Centrum for Dentalteknik Och Biomaterial I Huddinge (Huddinge, SE)
Primary Examiner: Silverman; Stanley S.
Assistant Examiner: Upton; Christopher
Attorney, Agent or Firm: Griffin Branigan & Butler
A settling apparatus for the separation of amalgam from waste water in a dental procedure includes an inclined passage through which the water is caused to flow from below and upwards while depositing amalgam. The inclined passage has an inclination of between 3.degree. and 15.degree.. It is filled with a large number of thin-walled, narrow tubes, which contact each other in a side-by-side manner. The water flows from below and upwards through the tubes and through the channels between the tubes while amalgam is settled and deposited on the interior, as well as on the exterior, surfaces of the tubes. |
|
DETAILED DESCRIPTION I claim: 1.
A settling apparatus for removing amalgam from waste water produced in a dental procedure, comprising a housing having upper and lower compartments separated from each other by an inclined partition wall, said upper compartment defining a pre-settling chamber; an inclined passage having an inclination to the horizontal of from about 3.
degree.
to 15.
degree.
; a plurality of tubes extending through said passage and the number thereof being sufficient that substantially all of the tubes contact other tubes in a side-by-side manner and form channels therebetween; means for flowing said waste water from said pre-settling chamber to a lowermost end of said passage and from said lowermost end of said passage through said passage, tubes and channels in laminar flow and out of said passage, wherein the inclination of said inclined partition wall is equal to the inclination of said inclined passage, said inclined passage being disposed in the lower compartment and beneath said inclined partition wall, and wherein amalgam in said waste water is settled in said pre-settling chamber and in and among said tubes and channels in said passage during said flowing of the waste water.
2.
Apparatus according to claim 1, wherein the passage and the tubes are inclined at an inclination of 5.
degree.
-10.
degree.
.
3.
Apparatus according to claim 1, wherein the inclined passage has a cross section area of between 2000 and 20000 mm.
sup.
2, the tubes have a circular cross section, an internal diameter of between 1 and 4 mm, and a wall thickness of not more 0.
5 mm.
4.
Apparatus according to claim 1, wherein the passage and the tubes have a length of about 100-400 mm.
5.
Apparatus according to claims 1, wherein the tubes rest at their lowermost ends against a perforated bottom plate, an inlet chamber is provided in fluid communication with the bottom plate, and the inlet chamber is in fluid communication with a pre-settling chamber.
6.
Apparatus according to claim 1, wherein the circumferential edge portion of the inclined partition wall is clamped between an upper half of the housing defining said upper compartment and a lower half of the housing defining said lower compartment, and wherein the inclined partition wall also serves as a support for a gasket disposable between said upper and lower halves
|
| Related patents |
|
|
Stabilization of mercury-containing waste
OF THE INVENTION Many types of industrial processes generate waste containing toxic metals, including mercury. Two common types of such waste to which the present ...
|
|
|
Method for converting a contaminated waste material to an innocuous granular substance
OF THE INVENTION Any contaminated waste material may be treated in accordance with the present invention so long as it is in the form of a sludge, or can be readily ...
|
|
|
Method for fixing waste material
OF INVENTION EXAMPLE 1 A montmorillonite clay in the form of a bentonite clay was finely ground to a particle size of about 200 mesh. This finely ground bentonite clay ...
|
|
|
Method of treating wastewater sludges for pathogen removal and vector control
A method for treating wastewater sludge and biosolids to achieve Class A pathogen reduction standards and to reduce vector attraction, comprising the steps of providing ...
|
|
|
Asphalt shingle with foamed asphalt layer under tabs
We claim: 1. An improved asphalt shingle comprising an asphalt shingle having a headlap portion and a normally exposed tab portion, with the improvement of a layer of ...
|
|
|
Bracket assembly
OF THE PRESENT INVENTION With reference first to FIG. 1, a stairway 10 is thereshown disposed between an upper building level 12 and a lower building level 14 so that ...
|
|
|
Shelving construction
The present invention provides a structure for interconnecting elements of a metal shelving assembly wherein a vertically extending slot having an arcuate edge along its ...
|
|
|
Flexible diaphragm for dispensing product
What is claimed is: 1. A liquid applicator suitable for use in the application of liquids to a surface of the human body comprising a container having a container body ...
|
|
|
Pivot arm for apparatus, particularly medical apparatus
OF A PREFERRED EMBODIMENT Referring now in detail to the drawings wherein like parts are designated by like reference numerals throughout, there is illustrated in FIGS. ...
|
|
|
Bucket hanger
This application teaches the construction of a sheet metal hanger for connecting joist members to a wood supporting truss having a continuous single seat and the free ...
|
|
|
Screen Walls 
