US3937174A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sweeper having at least one side brush
Assignee: Individual
•
Filing: 1973-12-21
•
Granted: 1976-02-10
•
Expires: 1993-12-21
Abstract
Abstract A sweeper having at least one laterally arranged side brush rotatably mounted about a rotational axis inclined with respect to the vertical axis of the sweeper and having bristles arranged in a pattern about the rotational axis, and a drive mechanism responsive to the lateral displacement of the sweeper over the surface being swept for rotating the side brush in a predetermined direction of rotation about the rotational axis independently of the direction of lateral displacement of the sweeper.
Inventors
- 👤 Hermann Haaga
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:50
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4063; A47L11/4069; A47L11/22; A47L11/4036; A47L11/4038
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
153 words
Sweeper comprising at least one laterally arranged side brush rotatably mounted about a rotational axis inclined with respect to the vertical axis of the sweeper, said side brush including a base member having bristles arranged in a pattern about the rotational axis and extending downwardly and outwardly from said base member, and drive means responsive to the lateral displacement of the sweeper over the surface being swept for rotating said side brush in a predetermined direction of rotation about the rotational axis independently of the direction of lateral displacement of the sweeper, said bristles of said side brush being arranged in a circular pattern and said drive means including roll means for frictionally engaging the surface being swept, said roll means being disposed within the bristle crown and mounted for pivotal movement about the rotational axis, said roll means operatively engaging gear means concentrically disposed about the rotational axis of said side brush.
Claim 2
Dependent Claim
153 words
Sweeper comprising at least one laterally arranged side brush rotatably mounted about a rotational axis inclined with respect to the vertical axis of the sweeper, said side brush including a base member having bristles arranged in a pattern about the rotational axis and extending downwardly and outwardly from said base member, and drive means responsive to the lateral displacement of the sweeper over the surface being swept for rotating said side brush in a predetermined direction of rotation about the rotational axis independently of the direction of lateral displacement of the sweeper, said bristles of said side brush being arranged in a circular pattern and said drive means including roll means for frictionally engaging the surface being swept, said roll means being disposed within the bristle crown and mounted for pivotal movement about the rotational axis, said roll means operatively engaging gear means concentrically disposed about the rotational axis of said side brush.
Claim 3
Dependent Claim
78 words
Sweeper according to claim 1, wherein said drive means further includes pin means rotatably mounted at the sweeper and having a first portion extending at least approximately coaxially to the rotational axis of said side brush, said pin means including a second portion extending from said first portion and forming a crank axle having a section extending at right angles and offset with respect to said first portion, said section having said roll means mounted for rotation thereon.
Claim 4
Dependent Claim
49 words
Sweeper according to claim 2, wherein said drive means further includes a gear member connected for rotation with said roll means and in meshing engagement with said gear means, said gear means being connected to said side brush for rotation in accordance with the movement of said gear member.
Claim 5
Dependent Claim
26 words
Sweeper according to claim 3, wherein said section of said second portion which serves for mounting said roll means is inclined with respect to the horizontal.
Claim 6
Dependent Claim
44 words
Sweeper according to claim 4, comprising two laterally arranged side brushes positioned at the front end of the sweeper, and a drive means for each side brush for rotating said side brushes in opposite directions about the respective rotational axis of each side brush.
Claim 7
Dependent Claim
51 words
Sweeper according to claim 3, wherein said side brush includes a sleeve member connected to said base member and mounted for rotation about said first portion of said pin means, said gear means being pin-like projections extending from one end of said sleeve member for meshing engagement with said gear member.
Claim 8
Dependent Claim
23 words
Sweeper according to claim 6, wherein said gear member is a gear wheel mounted for rotation on said section of said second portion.
Claim 9
Dependent Claim
44 words
Sweeper according to claim 1, comprising two laterally arranged side brushes positioned at the front end of the sweeper, and a drive means for each side brush for rotating said side brushes in opposite directions about the respective rotational axis of each side brush.
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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |