Patent US3735442A successfully refreshed from Google Patents.
US3735442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand mounted eraser
Assignee: Individual
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Filing: 1971-05-20
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Granted: 1973-05-29
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Expires: 1991-05-20
Abstract
Abstract A hand mounted chalk eraser has an elongated flexible felt pad and three fastening loops secured to the pad, one loop near each end and one in the middle. One end loop extends about the user''s little finger; the other end loop extends about the user''s wrist, and the middle loop extends about the palm and back of the user''s hand, to hold the eraser securely on the edge of the user''s hand remote from his thumb. In another embodiment, the pad is shortened and only the wrist loop and the middle loop and used.
Inventors
- 👤 J Lukas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:50
CPC Classifications
B; B43; B43L; B43L21/00; Y; Y10; Y10S; Y10S2/00; Y10S2/908; Y10S2/91
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
144 words
An eraser comprising: an elongated pad of flexible material and having a front erasing surface and a rear surface, and first, second and third fasteners for securing said pad to a user''s hand with said rear surface lying against said hand and said front surface exposed for erasing, said first fastener being located near one end of said pad and being adapted to extend about a finger of said user, said second fastener being located near the other end of said pad and being adapted to extend about the wrist of said user, said third fastener being located near the middle of said pad and being adapted to extend about the user''s hand forwardly of the connection of the thumb to such hand and rearwardly of the connection of the remaining four fingers to said hand, said fasteners all being loops of elastic material.
Claim 2
Dependent Claim
144 words
An eraser comprising: an elongated pad of flexible material and having a front erasing surface and a rear surface, and first, second and third fasteners for securing said pad to a user''s hand with said rear surface lying against said hand and said front surface exposed for erasing, said first fastener being located near one end of said pad and being adapted to extend about a finger of said user, said second fastener being located near the other end of said pad and being adapted to extend about the wrist of said user, said third fastener being located near the middle of said pad and being adapted to extend about the user''s hand forwardly of the connection of the thumb to such hand and rearwardly of the connection of the remaining four fingers to said hand, said fasteners all being loops of elastic material.
Claim 3
Dependent Claim
18 words
An eraser according to claim 1 wherein said pad is between 3 1/2 and 4 1/2 inches long.
Claim 4
Dependent Claim
26 words
An eraser according to claim 1 wherein said pad is between 3 1/2 and 4 1/2 inches long and between 1 inch and 2 inches wide.
Claim 5
Dependent Claim
19 words
An eraser according to claim 1 wherein said pad is approximately 4 inches long and 1 3/4 inches wide.
Claim 6
Dependent Claim
259 words
An eraser comprising: an elongated pad of flexible material and having a front erasing surface and a rear surface, and first, second and third fasteners for securing said pad to a user''s hand with said rear surface lying against said hand and said front surface exposed for erasing, said first fastener being located near one end of said pad and being adapted to extend about a finger of said user, said second fastener being located near the other end of said pad and being adapted to extend about the wrist of said user, said third fastener being located near the middle of said pad and being adapted to extend about the user''s hand forwardly of the connection of the thumb to such hand and rearwardly of the connection of the remaining four fingers to said hand, said pad being approximately 4 inches long and 1 3/4 inches wide, said first fastener being located about 1/2 inch from the front of said pad and forming a closed eLastic loop about 3/4 inches in height by 3/4 inches in width at its connection with said pad, said third fastener being located approximately in the middle of said pad and forming a closed elastic loop about 3 1/4 inches in height by 1 3/4 inches in width at its connection with said pad, said second fastener being located about 1/2 inch from the other end of said pad and forming a closed elastic loop about 2 3/8 inches in height by 1 3/4 inches in width at its connection with said pad.
Claim 7
Dependent Claim
259 words
An eraser comprising: an elongated pad of flexible material and having a front erasing surface and a rear surface, and first, second and third fasteners for securing said pad to a user''s hand with said rear surface lying against said hand and said front surface exposed for erasing, said first fastener being located near one end of said pad and being adapted to extend about a finger of said user, said second fastener being located near the other end of said pad and being adapted to extend about the wrist of said user, said third fastener being located near the middle of said pad and being adapted to extend about the user''s hand forwardly of the connection of the thumb to such hand and rearwardly of the connection of the remaining four fingers to said hand, said pad being approximately 4 inches long and 1 3/4 inches wide, said first fastener being located about 1/2 inch from the front of said pad and forming a closed eLastic loop about 3/4 inches in height by 3/4 inches in width at its connection with said pad, said third fastener being located approximately in the middle of said pad and forming a closed elastic loop about 3 1/4 inches in height by 1 3/4 inches in width at its connection with said pad, said second fastener being located about 1/2 inch from the other end of said pad and forming a closed elastic loop about 2 3/8 inches in height by 1 3/4 inches in width at its connection with said pad.
Claim 8
Dependent Claim
17 words
An eraser according to claim 5 wherein said pad is between 1/4 and 1/2 inch in thickness.
Claim 9
Dependent Claim
27 words
An eraser according to claim 1 wherein said pad includes a plurality of longitudinally extending slits in its front surface and extending part way through said pad.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |