US3864779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oscillating brush
Assignee: Individual
•
Filing: 1973-06-28
•
Granted: 1975-02-11
•
Expires: 1993-06-28
Abstract
Abstract An oscillating brush device comprising a pair of racks which are driven in reciprocation as is a gear mounted on the brush shaft. The racks are slotted at one end and receive eccentric cams mounted on a worm wheel to impart the desired reciprocation of the brush.
Inventors
- 👤 Alfred R Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:26
CPC Classifications
A; A46; A46B; A46B13/00; A46B13/02; A47; A47L; A47L17/00; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18416; Y10T74/18464; Y10T74/1848
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
An oscillating brush device comprising a housing, a pinion shaft mounted in said housing and extending therethrough, a brush secured to tHe pinion shaft outside said housing, a pinion mounted on the shaft within the housing, a pair of racks engaging said pinion respectively on opposing sides thereof, a motor mounted in said housing and having a rotary drive shaft, a worm screw in driven connection with said shaft, a worm wheel engaging said worm screw, a cam mounted on each face of said worm wheel in opposite phase, each of said racks being operatively connected to one of said cams whereby oscillatory motion is imparted to said brush upon rotation of said shaft.
Claim 2
Dependent Claim
114 words
An oscillating brush device comprising a housing, a pinion shaft mounted in said housing and extending therethrough, a brush secured to tHe pinion shaft outside said housing, a pinion mounted on the shaft within the housing, a pair of racks engaging said pinion respectively on opposing sides thereof, a motor mounted in said housing and having a rotary drive shaft, a worm screw in driven connection with said shaft, a worm wheel engaging said worm screw, a cam mounted on each face of said worm wheel in opposite phase, each of said racks being operatively connected to one of said cams whereby oscillatory motion is imparted to said brush upon rotation of said shaft.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |