Patent US4964023A successfully refreshed from Google Patents.
US4964023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder with semiconductor lighting device
Assignee: Individual
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Filing: 1988-12-28
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Granted: 1990-10-16
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Expires: 2008-12-28
Abstract
Abstract An illuminated tool or key, in which a light source is detachably secured to a surface of the tool or key. Additionally, the emitted light can be modulated to perform an additional keying function when received by the lock. A three-color light emitter is preferable.
Inventors
- 👤 Junichi Nishizawa
- 👤 Yoshikatsu Tamaoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:46
CPC Classifications
A; A44; A44B; A44B15/00; A44B15/005; E; E05; E05B; E05B17/00; E05B17/10; E05B17/103; F; F21; F21V; F21V21/00; F21V21/08; Y; Y10; Y10S; Y10S362/00; Y10S362/80; Y10S362/802; Y10T; Y10T70/00; Y10T70/70; Y10T70/7051; Y10T70/7062; Y10T70/80; Y10T70/8432; Y10T70/8676
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
44 words
A locking/unlocking device, comprising: a key; lighting means detachably attached to said key; a signal generator for impressing a predetermined signal upon light emitted from said lighting means; and a locking device operable in response to said emitted light impressed with said predetermined signal.
Claim 2
Dependent Claim
44 words
A locking/unlocking device, comprising: a key; lighting means detachably attached to said key; a signal generator for impressing a predetermined signal upon light emitted from said lighting means; and a locking device operable in response to said emitted light impressed with said predetermined signal.
Claim 3
Dependent Claim
28 words
The locking/unlocking device as recited in claim 1, wherein said locking device includes a light receiving section for receiving said emitted light and for detecting said impressed signal.
Claim 4
Dependent Claim
99 words
A key system comprising: a key having a working portion at a first end thereof; lighting means for projecting light in a first direction; a casing for accommodating therein said lighting means; attaching means for detachably attaching said casing to said key on a surface thereof extending from said first end to a second end opposite said first end, wherein said first direction of said lighting means extends towards said first end; a light receiving section for detecting said projected light from said lighting means; and a lock openable in response to said signal contained in said detected light.
Claim 5
Dependent Claim
99 words
A key system comprising: a key having a working portion at a first end thereof; lighting means for projecting light in a first direction; a casing for accommodating therein said lighting means; attaching means for detachably attaching said casing to said key on a surface thereof extending from said first end to a second end opposite said first end, wherein said first direction of said lighting means extends towards said first end; a light receiving section for detecting said projected light from said lighting means; and a lock openable in response to said signal contained in said detected light.
Claim 6
Dependent Claim
46 words
The key system as recited in claim 3, wherein said attaching means comprises a first surface member attached to said key and a second surface member attached to said casing, said first and second surface members being stickable to each other and detachable from each other.
Claim 7
Dependent Claim
28 words
The key system as recited in claim 4, wherein said first surface member comprises a plurality of hooks, and said second surface member comprises a plurality of loops.
Claim 8
Dependent Claim
28 words
The key system as recited in claim 4, wherein said first surface member comprises a plurality of loops, and said second surface member comprises a plurality of hooks.
Claim 9
Dependent Claim
21 words
The key system as recited in claim 3, wherein said attaching means comprises a screw connecting said key and said casing.
Claim 10
Dependent Claim
28 words
The key system as recited in claim 3, wherein said attaching means comprises a clip attached at one end thereof to said casing and clippable onto said key.
Claim 11
Dependent Claim
17 words
The key system as recited in claim 3, wherein said lighting means includes a light emitting diode.
Claim 12
Dependent Claim
46 words
The key system as recited in claim 9, wherein said attaching means comprises a first surface member attached to said key and a second surface member attached to said casing, said first and second surface members being stickable to each other and detachable from each other.
Claim 13
Dependent Claim
28 words
The key system as recited in claim 10, wherein said first surface member comprises a plurality of hooks, and said second surface member comprises a plurality of loops.
Claim 14
Dependent Claim
28 words
The key system as recited in claim 10, wherein said first surface member comprises a plurality of loops, and said second surface member comprises a plurality of hooks.
Claim 15
Dependent Claim
21 words
The key system as recited in claim 9, wherein said attaching means comprises a screw connecting said key and said casing.
Claim 16
Dependent Claim
28 words
The key system as recited in claim 9, wherein said attaching means comprises a clip attached at one end thereof to said casing and clippable onto said key.
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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) | 1993-10-15 | 1994-04-16 | 1994-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-15 | 1998-04-16 | 1998-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-15 | 2002-04-16 | 2002-10-16 | $7700.00 | Window Closed / Lapsed |