Patent US3638271A successfully refreshed from Google Patents.
US3638271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mandrel construction for paint roller
Assignee: EZ Paintr Corp
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Filing: 1970-01-29
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Granted: 1972-02-01
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Expires: 1990-01-29
Abstract
Abstract An improved mandrel construction for paint rollers characterized by the provision of a laterally movable inboard mandrel and a fixed outboard mandrel with the outboard mandrel having generally yieldable fingers normally engaging the interior of a replacement roller cover telescoped thereover. Mating locking surfaces are provided on the inboard and outboard mandrels so that when the two are brought together by relative axial movement and the locking surfaces thereof interengage, the fingers on the outboard mandrel are contracted to permit the roller cover to relatively freely fall therefrom.
Inventors
- 👤 John A Pharris
- 👤 Giacinto C D Ercoli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:48
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
203 words
A paint roller assembly including a handle portion and an axle portion comprising: a first mandrel slidably and rotatably mounted on the axle, said first mandrel having a hub, rear wall means connected to the hub and a generally cylindrical rim portion connected to the rear wall means and terminating in a generally open end having radial reductions thereat providing a finger-constricting element; and a second mandrel rotatably mounted on the axle, means operable between said second mandrel and axle to prevent slidable movement of said second mandrel, said second mandrel having a hub and a generally cylindrical rim with means interconnecting the hub and rim, and slits formed in the rim to provide yieldable fingers with free ends facing generally towards the open end of the first mandrel, the fingers having portions of increased radius for normally frictionally engaging the interior of a roller cover assembled thereover, finger-constricting element seat means on the free ends of the fingers forwardly of the portion of increased radius, said first mandrel finger-constricting element being adapted to engage said second mandrel fingers to move the same radially inwardly and to occupy said seat means when said first mandrel is moved into engagement with said second mandrel.
Claim 2
Dependent Claim
203 words
A paint roller assembly including a handle portion and an axle portion comprising: a first mandrel slidably and rotatably mounted on the axle, said first mandrel having a hub, rear wall means connected to the hub and a generally cylindrical rim portion connected to the rear wall means and terminating in a generally open end having radial reductions thereat providing a finger-constricting element; and a second mandrel rotatably mounted on the axle, means operable between said second mandrel and axle to prevent slidable movement of said second mandrel, said second mandrel having a hub and a generally cylindrical rim with means interconnecting the hub and rim, and slits formed in the rim to provide yieldable fingers with free ends facing generally towards the open end of the first mandrel, the fingers having portions of increased radius for normally frictionally engaging the interior of a roller cover assembled thereover, finger-constricting element seat means on the free ends of the fingers forwardly of the portion of increased radius, said first mandrel finger-constricting element being adapted to engage said second mandrel fingers to move the same radially inwardly and to occupy said seat means when said first mandrel is moved into engagement with said second mandrel.
Claim 3
Dependent Claim
26 words
The combination of claim 1 including a finger constriction member spreading and guiding surface forwardly of the seat means on the free ends of the fingers.
Claim 4
Dependent Claim
43 words
The assembly of claim 1 wherein the means interconnecting the hub portion and the rim portion of the second mandrel includes a rear wall to which the rim portion is connected and rib means extending from the rear wall to the hub portion.
Claim 5
Dependent Claim
21 words
The assembly of claim 1 wherein the seat means comprises a generally cylindrical reduction on the free ends of the fingers.
Claim 6
Dependent Claim
26 words
The assembly of claim 4 wherein the cylindrical reduction provides a radial shoulder extending generally transversely to the portions of the increased radius of the fingers.
Claim 7
Dependent Claim
24 words
The assembly of claim 4 wherein the spreading and guiding surface comprises a generally frustoconical segmental portion on the free ends of the fingers.
Claim 8
Dependent Claim
26 words
The assembly of claim 6 wherein the cylindrical reduction provides a radial shoulder extending generally transversely to the portions of the increased radius of the fingers.
References Cited (Backward Citations)
US2977671A
Cited
US3060555A
Cited
US3119137A
Cited
US3145451A
Cited
US3229319A
Cited
US3335446A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |