Compressed air and underpressure supply unit

Details Compressed air and underpressure supply unit Compressed air and underpressure supply unit

1991-09-09

1993-06-29

Bertsch, Richard A.

Pumps

Combined

41742314, 312209, 3122652, 433 77, F04B 2304, A61G 1514, A47B 8100

Patent

active

052228711

DESCRIPTION:

BRIEF SUMMARY
The invention refers to a compressed air and underpressure supply unit for dental surgeries.
Such a supply unit is described in U.S. Pat. No. 3,553,840. In this unit the compressor and the suction unit are mounted in a mobile frame which also carries the compressed air and underpressure consumers, i.e. a saliva remover and a hand-piece providing compressed air. This supply unit represents an emergency supply and disposal unit for a dental surgery which is self-contained, apart from the electrical connection required. No connections to fixed lines in the building are required.
Compressed air and underpressure in dental surgeries which are in constant use are provided partly through lines fixed to the treatment chair and partly through lines laid in the building. Normally a compressor and a suction unit are installed separately in the cellar of the relevant building and connected to the workplace through a compressed air line or an underpressure line. These installations are often fitted by local tradesmen who have no special experience in the relevant field involved. Thus flexible parts of the underpressure line are often laid incorrectly, for example, so that they partly collapse in underpressure during operation and thus only part of the capacity provided by the suction unit is available at the workplace.
This invention is therefore intended to provide a supply unit which can be pre-assembled in the factory so that only a small number of non-critical connections need be made at the point of installation, which can be carried out reliability by tradesmen not specifically trained for such installations.
This task is solved according to the invention by the supply unit described hereinafter.
In the supply unit according to the invention the physical position of the various parts is determined in the factory.
On site only the connections to the fixed supply pipes in the building and the electrical mains network are required. If the supply unit consists of several superimposed components some of the internal connections must be made after the components are superimposed but these are non-critical, straight connections.
As a result, a supply unit according to the invention is no more expensive than a conventional installation because the cost of the frame carrying the compressor and the suction unit, manufactured in series in the factory, is easily compensated for by the savings involved in the reduced installation work on site.
Thus the solution provided by the invention also has the benefit that the installation space required is reduced. This is particularly beneficial in applications where no spacious cellar is available. Also maintenance and repair of the unit according to the invention is easier and faster because the engineer is always dealing with the same unit and does not first have to check the layout of each installation.
In a supply unit according to another embodiment it is also possible to provide an air storage tank and/or a dry air unit within the same small space. Even this supply unit is very easy to install.
The further design of the invention according to another embodiment is advantageous due to the easy manufacture of the frame carrying the unit and consisting of largely identical components.
The further design of the invention according to another embodiment is beneficial due to the low production costs and the attractive appearance of the vertical frame.
A supply unit according to another embodiment has no sharp edges and an attractive appearance.
The further design of the invention according to another embodiment very simply provides sound insulation for the supply unit. This makes it possible to install the attractive supply unit in a room within the dental surgery or laboratory if no cellar or separate room is available.
The further design of the invention according to another embodiment makes it possible to very easily secure the panel components or mounting plates for electronic or fluid trays anywhere on the frame.
The further design of the invention according to another embodimen

REFERENCES:
patent: 3229368 (1966-01-01), Tocchini
patent: 3734122 (1973-05-01), Cousins
patent: 4252506 (1981-02-01), Hannibal
patent: 4281883 (1981-08-01), Zacky
patent: 4359085 (1982-11-01), Mueller
patent: 4441766 (1984-04-01), Hess

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