Patent US5131894A successfully refreshed from Google Patents.
Patent US3724140A successfully refreshed from Google Patents.
US3724140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buffing wheel
Assignee: Individual
•
Filing: 1971-11-12
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Granted: 1973-04-03
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Expires: 1991-11-12
Abstract
Abstract The buffing wheels of this invention include a buffing wheel shaft on which buffing wheel sections and spacers are alternately slidably mounted with the spacers interconnected in keyed engagement with each other and with the rims of the wheel sections firmly gripped between the faces of paired and interkeyed spacers.
Inventors
- 👤 J Harper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:44
CPC Classifications
B; B24; B24D; B24D13/00; B24D13/20
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
100 words
In combination with a driven buff wheel shaft journalled in a buff head and having a plurality of external longitudinal ribs; a plurality of buff sections each having an internal rim slidably mountable over said shaft on said ribs; spacers between and separating the rims of each buff section; each spacer having spaced side surfaces engaging adjacent side surfaces of said rims; internal lugs on said spacer keying on said ribs and preventing rotation of said spacers about the shaft; and said shaft having tightening means for pressing the spacers and buff sections into keyed friction engagement with each other.
Claim 2
Dependent Claim
100 words
In combination with a driven buff wheel shaft journalled in a buff head and having a plurality of external longitudinal ribs; a plurality of buff sections each having an internal rim slidably mountable over said shaft on said ribs; spacers between and separating the rims of each buff section; each spacer having spaced side surfaces engaging adjacent side surfaces of said rims; internal lugs on said spacer keying on said ribs and preventing rotation of said spacers about the shaft; and said shaft having tightening means for pressing the spacers and buff sections into keyed friction engagement with each other.
Claim 3
Dependent Claim
31 words
The combination of claim 1 wherein each of said lugs has a slot and a tongue, the slot and tongue of adjacent spacers making keying engagement in alignment with each other.
Claim 4
Dependent Claim
41 words
The combination of claim 1 wherein each of said lugs has a portion projecting beyond a lug side surface into aligning inner peripheral engagement with a buff rim and said projecting portions being of lesser thickness than the rim aligned thereon.
Claim 5
Dependent Claim
57 words
The combination of claim 3 wherein each of said lugs has an internal anchor portion, said anchors being alignable with each other along a rib and the extreme anchor portions being securable to hold an assembly of buff sections and spacers in aligned engagement while sliding the assembly on said shaft, in keying relationship with said ribs.
Claim 6
Dependent Claim
67 words
The combination of claim 3 wherein said spacers having passages from inner to outer surfaces between the side surfaces of the spacers, said passages channeling flow of fluid from the interior of the shaft to the external buff sections and said shaft having an internal passage for channeling fluid to the interior of the buff and spacer assembly and through said spacer passages to said buff sections.
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) | 1976-04-02 | 1976-10-02 | 1977-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-02 | 1980-10-02 | 1981-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-02 | 1984-10-02 | 1985-04-03 | $7700.00 | Window Closed / Lapsed |