Air pump apparatus with vibration and sound reducing housing means
AssigneeMangar International Limited
InventorsRichard M. Rimington, Richard E. Fletcher
Life of this patent
Estimating the term…
Abstract
Portable, low noise air pump apparatus employing an inexpensive lightweight pump and motor unit, which pumps a pulsed noisy output into a plenum chamber inside a rubber impervious sub-housing which absorbs noise and vibration; and a sound deadening plastics tube which carries the compressed air from the plenum, via a sound absorbing chamber (surrounded by lightweight sound absorbing material which supports the sub-housing) and across an accommodation space to an outlet fitting from which a smooth low-noise compressed air output can be supplied.
Claims24
Air pump apparatus comprising:
- a) a rigid cylindrical housing which directly supports a cover assembly;
- b) a sound absorption chamber in said housing;
- c) pump means in said sound absorption chamber;
- d) duct means within said housing for conveying air from said pump means;
- e) a sub-housing is disposed in the sound absorption chamber and defines a plenum chamber to which said duct means connects;
- and
- f) said pump means comprises a pump and motor unit mounted in said plenum chamber to discharge air under pressure into said plenum chamber;
- g) the cover assembly includes an openable storage compartment for storing fittings and accessories for the apparatus;
- and
- h) the storage compartment is disposed to support the cylindrical housing against being rolled.
Air pump apparatus comprising:
- a) pump means and electrical operating means contained in a housing,
- b) the pump means comprises a pump and motor unit which is located in a plenum chamber defined by a sub-housing which is composed of vibration absorbing damping elastomeric material to absorb vibration caused by the pump means during its operation, and
- c) the sub-housing is disposed in further sound or vibration damping material within said housing.
Air pump apparatus comprising:
- a) rigid housing means defining a sound absorption chamber;
- b) sub-housing means disposed in the sound absorption chamber and defining a sealed plenum chamber;
- c) pump means mounted in said sealed plenum chamber to discharge air under pressure directly into said sealed plenum chamber;
- and
- d) means for conveying air within said rigid housing means to said pump means and from the sealed plenum chamber.
Air pump apparatus comprising:
- a) housing means containing an electric motor, an air pump driven by the electric motor, valve means, and means for electrically operating the motor;
- b) said housing means including sound absorbent means defining a sound absorption chamber;
- c) said housing means including sealed sub-housing means defining a sealed plenum chamber and being located within the sound absorption chamber;
- d) the pump and motor form a unit which is mounted by elastomeric material in the sealed plenum chamber to discharge air into and pressurize the sealed plenum chamber;
- and
- e) air conveying means extends through the sound absorption chamber to the sub-housing means therein to receive pressurized air from the sealed plenum chamber.
Air pump apparatus comprising:
- a) pump means and electrical operating means contained in a housing;
- b) the pump means including a pump and motor unit which is located in a sealed plenum chamber defined by a sub-housing;
- c) vibration absorbing damping material mounts the pump and motor unit to discharge pressurized air into the sealed plenum chamber;
- d) the sub-housing is located in and separated from the housing by sound and vibration damping material;
- and
- e) duct means extends through the sound and vibration damping material and is connected to the sub-housing to convey air under pressure from the plenum chamber to outlet means.
Dependencies are inferred from the claim text.