US4100644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner nozzle with rotatable comb-shaped part
Assignee: Electrolux AB
•
Filing: 1977-03-04
•
Granted: 1978-07-18
•
Expires: 1997-03-04
Abstract
Abstract A nozzle for a vacuum cleaner which has an elongated comb-shaped part that can be rotated from a retracted position within the nozzle housing to another position in which it is extended out of the housing for use with a deep pile rug. The comb-shaped part has a cylindrical surface which moves adjacent to the suction channel and has an opening therein for communication between the comb-shaped part and the suction channel when said part is in its fully extended position.
Inventors
- 👤 Erik Karl Gustav Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:17
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
In a vacuum cleaner nozzle having a suction channel for conducting dust-laden air to a dust container the improvement comprising a hollow housing connected to said suction channel, an elongated part having a body and a comb; said body having spaced first and second channels extending in different planes, means mounting said part in said housing for rotation therein and positioning said part adjacent to the surface to be cleaned; the teeth of said comb being hollow and open at their free ends; the opposite ends of said teeth being connected to said first channel; in a first position of said rotatable part, said comb being in an extended position, whereby an air flow path is formed through said hollow teeth, said first channel and said suction channel; and in a second position of said part said comb being retracted into a position within said hollow housing whereby an air flow path is formed through said second channel and said suction channel.
Claim 2
Dependent Claim
162 words
In a vacuum cleaner nozzle having a suction channel for conducting dust-laden air to a dust container the improvement comprising a hollow housing connected to said suction channel, an elongated part having a body and a comb; said body having spaced first and second channels extending in different planes, means mounting said part in said housing for rotation therein and positioning said part adjacent to the surface to be cleaned; the teeth of said comb being hollow and open at their free ends; the opposite ends of said teeth being connected to said first channel; in a first position of said rotatable part, said comb being in an extended position, whereby an air flow path is formed through said hollow teeth, said first channel and said suction channel; and in a second position of said part said comb being retracted into a position within said hollow housing whereby an air flow path is formed through said second channel and said suction channel.
Claim 3
Dependent Claim
31 words
The combination as claimed in claim 1 wherein said teeth have triangular shaped, rearwardly extending parts at the free ends thereof for penetrating to the bottom of a deep pile rug.
Claim 4
Dependent Claim
33 words
The combination as claimed in claim 1 further comprising an elongated slot in the body of said part which extends substantially the entire length of said body and communicates with said second channel.
Claim 5
Dependent Claim
42 words
The combination as claimed in claim 1 wherein said body is provided with at least a partial cylindrical outer surface and a concave opening for said suction channel whereby said channels selectively mate with said opening upon rotation of said elongated part.
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) | 1981-07-17 | 1982-01-16 | 1982-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-17 | 1986-01-16 | 1986-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-17 | 1990-01-16 | 1990-07-18 | $7700.00 | Window Closed / Lapsed |