US3828696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety kneeboard
Assignee: Individual
•
Filing: 1972-03-20
•
Granted: 1974-08-13
•
Expires: 1992-03-20
Abstract
Abstract This invention relates to a flexible flat safety kneeboard for use in ejection seat aircraft to prevent injury to the wearer and physically, jaming the aircraft controls. The surface may be a write-on/erasable type. A phosphorescent layer may be used between the structural surface and a write-on/erasable surface whereupon writing may be effected with a common pencil and may be read in otherwise total darkness. Non-metallic plastic slide lock clamps may be used to hold flight forms or note paper. Velcro, may be used to receive and hold a pencil, or miniature flashlight. A lanyard attaching means may be attached to the kneeboard piano.
Inventors
- 👤 J Lockridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:38
CPC Classifications
A; A47; A47B; A47B23/00; A47B23/002; B; B64; B64D; B64D25/00; B64D25/02; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24008; Y10T428/24017
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
245 words
An aviator''s writing kneeboard comprising a writing structural portion including a board having a flat face for writing and a flat leg-engaging surface opposite the face for resting on an upper leg of a user, the face and the base of the board having rounded corners, having a generally elongated rectangular shape with long side edges and short top and bottom edges and having parallel slots, one on each side slightly inward from the side edges at points approximately half way between the top and bottom edges and aligned approximately parallel with side edges of the face and the base of the board, a clip means connected to the board for holding papers, an anchor means connected to the writing structural portion of the board, the anchor means comprising a knee strap passing loosely through the slots around the upper leg beneath the board for securing the board to an upper leg of a user yet allowing the board to be easily intentionally detached from the strap, the structural portion board comprising a flat, thin, yieldably deformable and resilient sheet of form stable plastic material which is flexible in both top to bottom direction and side to side direction yet the surface of which is firm enough to provide adequate support for writing thereon, and on materials attached thereto, without bending, whereby the board does not injure a user when ejecting from an aircraft and does not jam aircraft controls when loose in a cockpit.
Claim 2
Dependent Claim
245 words
An aviator''s writing kneeboard comprising a writing structural portion including a board having a flat face for writing and a flat leg-engaging surface opposite the face for resting on an upper leg of a user, the face and the base of the board having rounded corners, having a generally elongated rectangular shape with long side edges and short top and bottom edges and having parallel slots, one on each side slightly inward from the side edges at points approximately half way between the top and bottom edges and aligned approximately parallel with side edges of the face and the base of the board, a clip means connected to the board for holding papers, an anchor means connected to the writing structural portion of the board, the anchor means comprising a knee strap passing loosely through the slots around the upper leg beneath the board for securing the board to an upper leg of a user yet allowing the board to be easily intentionally detached from the strap, the structural portion board comprising a flat, thin, yieldably deformable and resilient sheet of form stable plastic material which is flexible in both top to bottom direction and side to side direction yet the surface of which is firm enough to provide adequate support for writing thereon, and on materials attached thereto, without bending, whereby the board does not injure a user when ejecting from an aircraft and does not jam aircraft controls when loose in a cockpit.
Claim 3
Dependent Claim
27 words
A kneeboard, as claimed in claim 1, comprising a non-metallic slide lock type clamps to hold inflight reference material, note paper, and writing instruments, to said kneeboard.
Claim 4
Dependent Claim
56 words
An aviator''s writing kneeboard of claim 1 comprising a writing structural portion and an anchor means connected to the writing structural portion, the writing structural portion comprising a flat, thin, yieldably deformable and resilient sheet of form stable plastic material, the writing structural portion further being characterized by a surface of semi-permanent write-on and erasable material.
Claim 5
Dependent Claim
99 words
An aviator''s writing kneeboard of claim 1 comprising a writing structural portion and an anchor means connected to the writing structural portion, the writing structural portion comprising a flat, thin, yieldably deformable and resilient sheet of form stable plastic material, the writing structural portion further having an electroluminescent electrically powered in and flexible surface over which is affixed a transluscent write-on and erasable surface whereupon writing may be effected with a writing instrument, such as a common pencil, and may be read in otherwise total darkness due to the resulting contrast of the writing itself against the glowing subsurface.
Claim 6
Dependent Claim
89 words
An aviator''s writing kneeboard of claim 1 comprising a writing structural portion and an anchor means connected to the writing structural portion, the writing structural portion comprising a flat, thin, yieldably deformable and resilient sheet of form stable plastic material, the writing structural portion further having affixed to it at an appropriate place or places, pieces of Velcro fastener material the purpose of which is to receive and hold an object, such as a pencil or small flashlight, to which the opposite type of Velcro fastener material is attached.
Claim 7
Dependent Claim
36 words
The aviator''s kneeboard of claim 1 further comprising a flexible wire clip which supports a small flashlight from an elastic tensioned thigh mounted strap, by the interweaving design of the clip''s wire in the tensioned strap.
Claim 8
Dependent Claim
119 words
As illuminated erasable writing kneeboard of claim 1, generally iN the form of an aviator''s kneeboard writing desk comprising a writing structural portion and an anchor means connected to the writing structural portion, the writing structural portion comprising a flat, thin, yieldably deformable and resilient sheet of form stable plastic material, the writing structural portion further being characterized by a surface illuminated by electroluminescently lighting the uppermost layer of said surface being of a permanent or semipermanent write-on erasable material the transluscence of which allow adequate transmission of light from the illuminating underlayer that characters written upon said uppermost layer are readable in otherwise total darkness due to the resulting contrast of the writing itself against the glowing subsurface.
References Cited (Backward Citations)
US57263A
Cited
US753457A
Cited
US696044A
Cited
US956534A
Cited
GB191320741A
Cited
US1351935A
Cited
US1274312A
Cited
US1407239A
Cited
US1930478A
Cited
US2099295A
Cited
US2319316A
Cited
US2284501A
Cited
US2420673A
Cited
US2791040A
Cited
US2701173A
Cited
US2776848A
Cited
US2881009A
Cited
US2876022A
Cited
US3005091A
Cited
US2990308A
Cited
US3215453A
Cited
US3432944A
Cited
US3321068A
Cited
US3374508A
Cited
US3361091A
Cited
US3407757A
Cited
US3458110A
Cited
US3639952A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |