Patent US5163845A successfully refreshed from Google Patents.
US5163845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable free-standing visual aid
Assignee: Individual
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Filing: 1991-01-28
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Granted: 1992-11-17
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Expires: 2011-01-28
Abstract
Abstract A portable, free-standing visual aid designed to be used by coaches, teachers and other group leaders. The invention incorporates a large chalkboard, a chalk tray, sliding, two-sided inserts, a storage pocket for the inserts, and a smaller storage pocket for other items. It has a handle for portability. Some models use releasable fasteners to hold a chalk holder and eraser.
Inventors
- 👤 Carol L. Blassingame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:13
CPC Classifications
B; B43; B43L; B43L13/00; B43L13/005; G; G09; G09B; G09B1/00; G09B19/00
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
172 words
A visual aid which comprises: (a) four frame members attached to form a rectangle, said frame members consisting of a top member parallelly disposed to a longer, wider bottom member and two side members parallelly disposed to each other; (b) an erasable rectangular writing surface secured to the rearward portion of said frame; (c) routed grooves running along the inside surfaces of said top member, one of said side members and said bottom member; (d) an opening cut through the other said side member; (e) a rectangular board with two (2) flat writing surfaces, said board being slideably insertable into said opening, with the edges of said board containable in said routed grooves; (f) a large, rectangular receptacle means attached to rear side of said rectangular writing surface for storage of at least one of said rectangular boards; (g) smaller receptacle means centrally attached to the outside of said large receptacle means, for storage of a plurality of items; and (h) carrying means attached to the top surface of said top member.
Claim 2
Dependent Claim
172 words
A visual aid which comprises: (a) four frame members attached to form a rectangle, said frame members consisting of a top member parallelly disposed to a longer, wider bottom member and two side members parallelly disposed to each other; (b) an erasable rectangular writing surface secured to the rearward portion of said frame; (c) routed grooves running along the inside surfaces of said top member, one of said side members and said bottom member; (d) an opening cut through the other said side member; (e) a rectangular board with two (2) flat writing surfaces, said board being slideably insertable into said opening, with the edges of said board containable in said routed grooves; (f) a large, rectangular receptacle means attached to rear side of said rectangular writing surface for storage of at least one of said rectangular boards; (g) smaller receptacle means centrally attached to the outside of said large receptacle means, for storage of a plurality of items; and (h) carrying means attached to the top surface of said top member.
Claim 3
Dependent Claim
24 words
A visual aid according to claim 1, wherein at least one flat writing surface of said rectangular board is permanently marked with diagrammatic lines.
Claim 4
Dependent Claim
26 words
A visual aid according to claim 2 wherein a chalk tray projects outwardly form the front surface of said bottom member along said bottom member's length.
Claim 5
Dependent Claim
59 words
A visual aid according to claim 3 wherein two (2) releasable fastening elements are secured to the top of said top member, to which a holder of chalk and an eraser back may be releasably attached by other releasable fastening elements, one secured to the back of said holder of chalk and the other secured to said eraser back.
References Cited (Backward Citations)
US217289A
Cited
US3432944A
Cited
US3560092A
Cited
US3642191A
Cited
US3685170A
Cited
US3838520A
Cited
US4487586A
Cited
US4676527A
Cited
US4834334A
Cited
US4968258A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-17 | 1996-05-18 | 1996-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-17 | 2000-05-18 | 2000-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-17 | 2004-05-18 | 2004-11-17 | $7700.00 | Window Closed / Lapsed |