Patent US3750221A successfully refreshed from Google Patents.
US3750221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sonic beater nozzle
Assignee: TRC Acquisition Corp
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Filing: 1971-12-30
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Granted: 1973-08-07
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Expires: 1991-12-30
Abstract
Abstract A vacuum cleaner suction nozzle which features a sonic beater, that is, a beating mechanism that relies on the pulsations in air flow produced by a vibratory member for directly achieving the requisite cleaning action. The beating mechanism dispenses with the use of a vibrating or agitating device in direct physical contact with the carpet surface. The vibrating member of the bearing mechanism is located near the discharge end of the suction nozzle such that is does not interfere with the removal of bulky objects as these are encountered in the cleaning operation. Moreover, the vibrating member, because of its whiplike movement, produces such marked changes in air pressure and air velocity that efficient cleaning of a carpet and the like is promoted. A disabling mechanism is also provided such that the vibrating member may be placed in a position where it will be unaffected by the air flow.
Inventors
- 👤 C Meyerhoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:24
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A vacuum cleaner nozzle comprising: a casing having an elongated inlet opening, an outlet opening, and an elongated passageway connecting said inlet and outlet openings, said elongated passageway having a portion restricted in cross sectional area at a location removed from said inlet opening; means for directly beating the object to be cleaned by pulsations produced in the flow of air in said passageway, including a flexible member mounted at one end, the other end being free for vibratory movement in the restricted area portion of said passageway, said member extending transversely with respect to said passageway under conditions of no air flow, and said member producing said pulsations by means of a whip-like motion toward the upper end of the passageway under conditions of air flow.
Claim 2
Dependent Claim
127 words
A vacuum cleaner nozzle comprising: a casing having an elongated inlet opening, an outlet opening, and an elongated passageway connecting said inlet and outlet openings, said elongated passageway having a portion restricted in cross sectional area at a location removed from said inlet opening; means for directly beating the object to be cleaned by pulsations produced in the flow of air in said passageway, including a flexible member mounted at one end, the other end being free for vibratory movement in the restricted area portion of said passageway, said member extending transversely with respect to said passageway under conditions of no air flow, and said member producing said pulsations by means of a whip-like motion toward the upper end of the passageway under conditions of air flow.
Claim 3
Dependent Claim
21 words
A vacuum cleaner nozzle as defined in claim 1 in which said elongated inlet opening is free of any beating mechanism.
Claim 4
Dependent Claim
57 words
A vacuum cleaner nozzle as defined in claim 1 further comprising activating means for placing said flexible member in either of two extreme positions, in the first of which said member extends transversely of said passageway and in the other of which it extends longitudinally against a wall of said passageway and toward the upper end thereof.
Claim 5
Dependent Claim
43 words
A vacuum cleaner nozzle as defined in claim 3 in which said activating means includes means for pLacing said flexible member in the other extreme position so as to disable said flexible member whereby it does not pulsate under conditions of air flow.
Claim 6
Dependent Claim
59 words
A vacuum cleaner nozzle as defined in claim 4 in which said means for placing said member in the other extreme position includes a selector device and two plates associated with said vibratory flexible member, the first of said plates being a back-up plate having a hinged portion and a projection adapted to be engaged by said selector device.
Claim 7
Dependent Claim
47 words
A device as defined in claim 5, in which said vibratory member is held between said plates and is forced, upon movement of said first plate, into a recess provided in said second plate so as to assume its second extreme position, thereby disabling said vibratory member.
Claim 8
Dependent Claim
36 words
A device as defined in claim 5, further comprising a pair of selector buttons, a walking beam cooperating with rods connected to said buttons for moving said back-up plate so as to disable said vibratory member.
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |