Patent US1389028A successfully refreshed from Google Patents.
Patent US3666042A successfully refreshed from Google Patents.
US3666042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for eliminating noise from a motor power unit and device for the purpose
Assignee: Individual
•
Filing: 1971-05-07
•
Granted: 1972-05-30
•
Expires: 1991-05-07
Abstract
Abstract Noise eliminating device for a motor power unit having a chassis with a rectangular frame and a casing with an end wall at one end of the frame, a ceiling over the motor power unit compartment and a cooler grill at the other end of the frame and, a bit outside the sides of the frame, side walls of height roughly corresponding to half the height of the unit and with movable side walls intended to enclose the unit laterally by connection to the upper edge of the fixed side walls as also to the corresponding edge of the ceiling, and finally end wall sections connecting to the cooler grill and to the opposing end wall of the casing and enclosing side compartment on both sides of the unit, which also has an exhaust pipe passing up through the ceiling, the device comprising a plate under the chassis frame, two detachable side walls separating the side compartments from the power unit compartment over a major part of the unit, perforated plates in the end wall sections connected to the cooler grill, allowing the entry of air to the side compartments, an impeller which forces the cooling air out through the cooler grill, a cover which is L-shaped viewed from the side, providing an outer screen for the cooler grill, and inside the upper part of the cover a silencer for the exhaust pipe.
Inventors
- 👤 Jerzy Henryk Cederbaum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:51
CPC Classifications
F; F04; F04B; F04B35/00; F04B35/06; F02; F02B; F02B63/00; F02B63/06; F02B77/00; F02B77/11; F02B77/13; F04B39/00; F04B39/0027; F04B39/0033; F04B39/0038
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
355 words
A method of eliminating noise and at the same time, by means of an air current, cooling a motor power unit, for example a compressor, mounted on a chassis with a case-shaped rectangular frame and having a casing with a cooler grill at one end of the frame and, at the other end, an end wall as also a ceiling terminating the motor power unit compartment at the top and, a bit outside the sides of the frame, fixed side walls of height roughly corresponding to half the height of the unit and with movable side walls intended to enclose the unit laterally by connection to the upper edge of the fixed side walls as also to the corresponding edge of the ceiling, and finally end wall sections connecting to the cooler grill and to the opposing end wall of the casing and enclosing side compartments on both sides of the unit, the unit having an exhaust pipe passing up through the ceiling, characterized in that the chassis frame and the side compartments are closed at the bottom by a bottom plate, that between the actual unit compartment and the side compartments there are detachable side walls extending essentially from the cooler grill up to the second end wall past the greater part of the side edges of the frame, the side walls sealing tightly against the cooler, one edge of the ceiling section and one side frame edge, but not reaching up to the end wall, that the end wall sections which are connected to the cooler grill are perforated, so allowing air to be drawn into the side compartments and so that closed air flow channels, U-shaped viewed from above, are formed on each side of the unit, that the impeller is caused to force air out through the cooler grill by, for example, replacement of the impeller, and that a cover essentially L-shaped, viewed from the side, is placed over the cooler grill and the exhaust gas outlet of the unit, and that inside the cover, which should preferentially be coated with sound-absorbing material, there is a silencer for the exhaust pipe.
Claim 2
Independent Claim
355 words
A method of eliminating noise and at the same time, by means of an air current, cooling a motor power unit, for example a compressor, mounted on a chassis with a case-shaped rectangular frame and having a casing with a cooler grill at one end of the frame and, at the other end, an end wall as also a ceiling terminating the motor power unit compartment at the top and, a bit outside the sides of the frame, fixed side walls of height roughly corresponding to half the height of the unit and with movable side walls intended to enclose the unit laterally by connection to the upper edge of the fixed side walls as also to the corresponding edge of the ceiling, and finally end wall sections connecting to the cooler grill and to the opposing end wall of the casing and enclosing side compartments on both sides of the unit, the unit having an exhaust pipe passing up through the ceiling, characterized in that the chassis frame and the side compartments are closed at the bottom by a bottom plate, that between the actual unit compartment and the side compartments there are detachable side walls extending essentially from the cooler grill up to the second end wall past the greater part of the side edges of the frame, the side walls sealing tightly against the cooler, one edge of the ceiling section and one side frame edge, but not reaching up to the end wall, that the end wall sections which are connected to the cooler grill are perforated, so allowing air to be drawn into the side compartments and so that closed air flow channels, U-shaped viewed from above, are formed on each side of the unit, that the impeller is caused to force air out through the cooler grill by, for example, replacement of the impeller, and that a cover essentially L-shaped, viewed from the side, is placed over the cooler grill and the exhaust gas outlet of the unit, and that inside the cover, which should preferentially be coated with sound-absorbing material, there is a silencer for the exhaust pipe.
Claim 3
Dependent Claim
262 words
A device for execution of the method according to claim 1, with reference to a motor power unit mounted on a chassis with a case-shaped rectangular frame and having a casing with an end wall at one end of the frame, as also a ceiling over the motor power unit compartment and a cooler grill at the other end of the frame and, a bit outside the sides of the frame, side walls of height roughly corresponding to half the height of the unit and with movable side walls intended to enclose the unit laterally by connection to the upper edge of the fixed side walls as also to the corresponding edge of the ceiling, and finally end wall sections connecting to the cooler grill and to the opposing end wall of the casing and enclosing side compartments on both sides of the unit, the unit having an exhaust pipe passing up through the ceiling, characterized in that it comprises a plate on the underside of the chassis frame, two detachable side walls separating the side compartments of the unit from the power unit compartment over a major part of the length of the unit, perforated plates in the end wall sections connected to the cooler grill, allowing the entry of air to the side compartments, an impeller which forces the cooling air out through the cooler grill, a cover which is L-shaped viewed from the side, providing an outer screen for the cooler grill, and inside the upper part of the cover a silencer for the exhaust pipe of the unit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |