US4221019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floorcare device
Assignee: Vorwerk and Co Interholding GmbH
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Filing: 1979-04-20
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Granted: 1980-09-09
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Expires: 1999-04-20
Abstract
Abstract A floorcare device has a round brush located in a housing and rotatable about a rigid axle. At least one axial end portion of the axle is supported in the housing by an eccentric, so that by turning the eccentric the height of the axle and thereby of the round brush relative to the housing can be varied. Turning of the eccentric is performed by a ratchet mechanism. Another such eccentric may support the other end of the axle. The ratchet mechanism may include two ratchet wheels each provided on a respective one of the eccentrics, and two rings surrounding the ratchet wheels and having inner ratchets engageable with the latter.
Inventors
- 👤 Jurgen Jager
- 👤 Georg Haase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:15
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/04; A47L9/0494; A47L5/00; A47L5/12; A47L5/22; A47L5/28; A47L5/34
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
258 words
A floorcar device operable with the use of suction, comprisng a housing; a hollow brush in said housing, said hollow brush bounding an inner passage and rotatable about an axis; an axle extending through said inner passage of said hollow brush and defining the axis of rotation thereof, said axle having two axial end portions; two eccentrics, each respective one of which being located adjacent to a respective one of said axial end portions of said axle and having a receiving portion which is coaxial with said axis of rotation and receives a respective one of said axial end portions of said brush, and an engaging portion which has a further axis spaced from said axis of rotation so that said engaging portion is eccentrically offset relative to said receiving portion of the same eccentric; and a ratchet mechanism turnably supporting said engaging portion of said eccentrics and thereby supporting said axle and said hollow brush in said housing, and arranged to turn said eccentrics about said further axis of said engaging portions so that said receiving portions and thereby said axle and said axis of rotation of said hollow brush are displaced relative to said housing whereby the position of said axis of rotation of said hollow brush relative to said housing can be adjusted, said ratchet mechanism including a corresponding ratchet wheel on the engaging portion of each one of said eccentrics, and a corresponding ring member mounted in said housing surrounding each one of said ratchet wheels and having a ratchet engageable with the latter.
Claim 2
Dependent Claim
258 words
A floorcar device operable with the use of suction, comprisng a housing; a hollow brush in said housing, said hollow brush bounding an inner passage and rotatable about an axis; an axle extending through said inner passage of said hollow brush and defining the axis of rotation thereof, said axle having two axial end portions; two eccentrics, each respective one of which being located adjacent to a respective one of said axial end portions of said axle and having a receiving portion which is coaxial with said axis of rotation and receives a respective one of said axial end portions of said brush, and an engaging portion which has a further axis spaced from said axis of rotation so that said engaging portion is eccentrically offset relative to said receiving portion of the same eccentric; and a ratchet mechanism turnably supporting said engaging portion of said eccentrics and thereby supporting said axle and said hollow brush in said housing, and arranged to turn said eccentrics about said further axis of said engaging portions so that said receiving portions and thereby said axle and said axis of rotation of said hollow brush are displaced relative to said housing whereby the position of said axis of rotation of said hollow brush relative to said housing can be adjusted, said ratchet mechanism including a corresponding ratchet wheel on the engaging portion of each one of said eccentrics, and a corresponding ring member mounted in said housing surrounding each one of said ratchet wheels and having a ratchet engageable with the latter.
Claim 3
Dependent Claim
24 words
A floorcare device as defined in claim 1, wherein said housing is formed as a suction nozzle arranged to communicate with a suction source.
Claim 4
Dependent Claim
34 words
A floorcare device as defined in claim 1, and further comprising drive means, and a power transmission connecting said drive means with said hollow brush so as to rotate the latter about said axis.
Claim 5
Dependent Claim
17 words
A floorcare device as defined in claim 1, wherein said receiving portion of said eccentrics are cylindrical.
Claim 6
Dependent Claim
22 words
A floorcare device as defined in claim 1, and further comprising at least one bearing interposed between said axle and said brush.
Claim 7
Dependent Claim
67 words
A device as defined in claim 1, wherein said ratchet wheels have a plurality of teeth, the teeth of one of said ratchet wheels being inclined in a first circumferential direction, whereas the teeth of the other wheel are inclined in a second circumferential direction which is opposite to said first circumferential direction, so that in assembled condition said ratchet wheels are mirror-symmetrical relative to one another.
Claim 8
Dependent Claim
15 words
A device as defined in claim 1, wherein said ratchets of said rings are elastic.
Claim 9
Dependent Claim
23 words
A device as defined in claim 7, wherein each of said ratchets are of one piece with a respective one of said rings.
Claim 10
Dependent Claim
55 words
A device as defined in claim 1, wherein one of said ring members is turnably mounted in said housing; and further comprising an adjusting lever connected with said one ring member and arranged to be turned by a user so as to turn said one ring member and the ratchet wheel of the corresponding eccentric.
Claim 11
Dependent Claim
25 words
A device as defined in claim 9, wherein said adjusting lever extends outwardly beyond said housing so as to be readily accessible for a user.
Claim 12
Dependent Claim
27 words
A device as defined in claim 9; and further comprising spring means for returning said lever to its initial position after turning said lever by a user.
Claim 13
Dependent Claim
34 words
A device as defined in claim 11, wherein said spring means includes a tension spring which is connected between said adjusting lever and said housing so as to pull the former to the latter.
Claim 14
Dependent Claim
24 words
A device as defined in claim 1, wherein the ratchet wheel of each eccentric is formed by the engaging portion of the same eccentric.
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) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |