US4074385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carpet cleaning brush
Assignee: Individual
•
Filing: 1976-07-06
•
Granted: 1978-02-21
•
Expires: 1996-07-06
Abstract
Abstract Disclosed herein is a brush for cleaning carpets which includes a base member by which the brush is secured to the underside of a rotary or oscillating machine to impart a corresponding movement to the brush; a plurality of bundles of bristles, each bundle extending from the underside of the base member and being spaced from adjacent bundles; and a plurality of freely rotatable spheres journaled in the underside of the base member and protruding therefrom to support the weight of the brush and machine and vibrate against the carpet as the brush is driven thereover.
Inventors
- 👤 Lawrence F. Howard
- 👤 James W. Mills
- 👤 James L. Shannon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:43
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A46; A46B; A46B13/00; A46B9/00; A46B9/02; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/164; A47L11/34
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A brush for cleaning carpet comprising a base member; a plurality of bundles of bristles disposed about and extending from the underside of said base member, each of said bundles being spaced from the bundles adjacent thereto; and means carried by the underside of said base member for supporting said brush, said means being (mounted for) vertically moveable with respect to said base such that said means undergoes vertical oscillatory motion in response to vibration of said base member.
Claim 2
Dependent Claim
79 words
A brush for cleaning carpet comprising a base member; a plurality of bundles of bristles disposed about and extending from the underside of said base member, each of said bundles being spaced from the bundles adjacent thereto; and means carried by the underside of said base member for supporting said brush, said means being (mounted for) vertically moveable with respect to said base such that said means undergoes vertical oscillatory motion in response to vibration of said base member.
Claim 3
Dependent Claim
73 words
A brush for cleaning carpet comprising a base member; a plurality of bundles of bristles disposed about and extending from the underside of said base member, each of said bundles being spaced from the bundles adjacent thereto; a plurality of spherical members; and mounting means for mounting said spherical members upon the underside of said base member, said mounting means including means permitting both rotational and vertical movement of said spherical members therein.
Claim 4
Dependent Claim
73 words
A brush for cleaning carpet comprising a base member; a plurality of bundles of bristles disposed about and extending from the underside of said base member, each of said bundles being spaced from the bundles adjacent thereto; a plurality of spherical members; and mounting means for mounting said spherical members upon the underside of said base member, said mounting means including means permitting both rotational and vertical movement of said spherical members therein.
Claim 5
Dependent Claim
38 words
The combination of claim 2 wherein said mounting means includes means for confining said spherical members therein and means for limiting the vertical movement of said spherical members within said mounting means from about 0.3 to 0.7 cm.
Claim 6
Dependent Claim
37 words
The combination of claim 3 wherein said spherical members are free to oscillate within said mounting means from about 0.64 cm. above the ends of said bristles to about 0.32 cm. below the ends of said bristles.
Claim 7
Dependent Claim
27 words
The combination of claim 2 wherein said plurality of bundles of bristles are disposed about the underside of said base member in a plurality of concentric circles.
Claim 8
Dependent Claim
27 words
The combination of claim 5 wherein said mounting means are disposed along one or more of said concentric circles defined by said plurality of bundles of bristles.
Claim 9
Dependent Claim
28 words
The combination of claim 6 wherein each of said bundles of bristles is substantially uniformly spaced from bundles of bristles adjacent thereto by about 1.2 to 2.6 cm.
Claim 10
Dependent Claim
24 words
The combination of claim 2 wherein the outermost bundles of bristles extend angularly from said base member and protrude from the perimeter portion thereof.
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) | 1981-02-20 | 1981-08-22 | 1982-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-02-20 | 1985-08-22 | 1986-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-02-20 | 1989-08-22 | 1990-02-21 | $7700.00 | Window Closed / Lapsed |