US4568056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tilt mechanism for a stand-alone keyboard
Assignee: TLETYPE Corp
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Filing: 1984-07-02
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Granted: 1986-02-04
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Expires: 2004-07-02
Abstract
Abstract A tilt mechanism for a stand-alone keyboard includes two molded springs located within the keyboard enclosure. One end of each spring is anchored within the enclosure while the other end shaped in the form of a foot is free to move through openings located in the bottom portion of the keyboard. Notches located on the outer periphery of each foot are adapted to engage an edge of the opening locking the foot in place after a required length of the foot extends from the enclosure.
Inventors
- 👤 Kenneth F. Lewinski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:08
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/0208; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; Y; Y10; Y10S; Y10S248/00; Y10S248/917; Y10S248/918
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
A tilt mechanism for a stand-alone keyboard having a top and a bottom portion forming a substantially rectangular enclosure for housing a plurality of keyswitches, the mechanism comprising: a resilient member located within the enclosure and positioned at each side of the enclosure; each resilient member having a free end terminating in the shape of a foot and having the outer end anchored within the enclosure; means for anchoring one end of each resilient member; the bottom portion having an aperture located substantially opposite the foot of each member, the aperture having size and shape allowing for a portion of the foot to extend through it; and means for releasably locking said foot in place.
Claim 2
Dependent Claim
115 words
A tilt mechanism for a stand-alone keyboard having a top and a bottom portion forming a substantially rectangular enclosure for housing a plurality of keyswitches, the mechanism comprising: a resilient member located within the enclosure and positioned at each side of the enclosure; each resilient member having a free end terminating in the shape of a foot and having the outer end anchored within the enclosure; means for anchoring one end of each resilient member; the bottom portion having an aperture located substantially opposite the foot of each member, the aperture having size and shape allowing for a portion of the foot to extend through it; and means for releasably locking said foot in place.
Claim 3
Dependent Claim
27 words
A tilt mechanism in accordance with claim 1 wherein the top and bottom portions and each resilient member are molded from a thermal setting type of material.
Claim 4
Dependent Claim
30 words
A tilt mechanism in accordance with claim 2 wherein the means for anchoring each resilient member includes a closed end U-shaped retainer projecting from the bottom portion into the enclosure.
Claim 5
Dependent Claim
48 words
A tilt mechanism in accordance with claim 1 wherein the means for releasably locking the foot in place includes a plurality of notches located on the outer periphery of the foot, each notch being adapted to mate with the bottom portion of the keyboard enclosure bordering each aperture.
Claim 6
Dependent Claim
182 words
A tilt mechanism for a stand-alone keyboard having a top and a bottom portion forming a substantially rectangular enclosure for housing a plurality of keyswitches, the mechanism comprising: a resilient member located within the enclosure and positioned at each side of the enclosure; each resilient member having a free end terminating in the shape of a foot; means for anchoring the other end of each resilient member within the enclosure, the means including a U-shaped closed end retainer projecting from the bottom portion having a shape and size to accommodate the other end of the resilient member; each foot of the resilient member having a plurality of notches located on its outer periphery; and the bottom portion having an aperture located substantially opposite the foot of each member, the aperture having a size and shape allowing for a portion of the foot to extend through the aperture, the aperture positioned so that an edge of the aperture nearest the outer periphery of the foot engages one of the notches located on the outer periphery of the foot, locking the foot in place.
Claim 7
Dependent Claim
182 words
A tilt mechanism for a stand-alone keyboard having a top and a bottom portion forming a substantially rectangular enclosure for housing a plurality of keyswitches, the mechanism comprising: a resilient member located within the enclosure and positioned at each side of the enclosure; each resilient member having a free end terminating in the shape of a foot; means for anchoring the other end of each resilient member within the enclosure, the means including a U-shaped closed end retainer projecting from the bottom portion having a shape and size to accommodate the other end of the resilient member; each foot of the resilient member having a plurality of notches located on its outer periphery; and the bottom portion having an aperture located substantially opposite the foot of each member, the aperture having a size and shape allowing for a portion of the foot to extend through the aperture, the aperture positioned so that an edge of the aperture nearest the outer periphery of the foot engages one of the notches located on the outer periphery of the foot, locking the foot in place.
References Cited (Backward Citations)
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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) | 1989-02-03 | 1989-08-05 | 1990-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-02-03 | 1993-08-05 | 1994-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-02-03 | 1997-08-05 | 1998-02-04 | $7700.00 | Window Closed / Lapsed |