US3800730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Portable collapsible signal device
Assignee: Individual
•
Filing: 1973-05-02
•
Granted: 1974-04-02
•
Expires: 1993-05-02
Abstract
Abstract A portable, hinged signal device formed of two plates, one plate having a handle extending therefrom and both plates having a fluorescent paint treatment which substantially increases the visibility of the signal device during both daytime and nighttime use. A specially adapted hinge with a locking means joins the two plates along contiguous edges to positively hold the tool in either a closed or fully open position.
Inventors
- 👤 B Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:48
CPC Classifications
G; G08; G08B; G08B5/00; G08B5/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
111 words
A portable signal device comprising a generally flat first plate means having a handle extending outwardly from one end thereof, a generally flat second plate means, a hinge means connecting the other end of said first plate means with one end of said second plate means, said hinge means including locking means for maintaining said signal device in one of a fully closed first position with said second plate means superimposed on said first plate means and a fully open extended coplanar second position, and a fluorescent paint material incorporated into said first and second plate means whereby said device exhibits increased visibility characteristics in daytime as well as at nighttime.
Claim 2
Dependent Claim
111 words
A portable signal device comprising a generally flat first plate means having a handle extending outwardly from one end thereof, a generally flat second plate means, a hinge means connecting the other end of said first plate means with one end of said second plate means, said hinge means including locking means for maintaining said signal device in one of a fully closed first position with said second plate means superimposed on said first plate means and a fully open extended coplanar second position, and a fluorescent paint material incorporated into said first and second plate means whereby said device exhibits increased visibility characteristics in daytime as well as at nighttime.
Claim 3
Dependent Claim
49 words
The signal device according to claim 1 wherein each of said first and second plate means includes a generally rectangular plate and a marginal frame substantially surrounding and connected to three sides of said plate, the remaining side being adjacent the other of said first and second plate means.
Claim 4
Dependent Claim
110 words
The signal device according to claim 2 wherein said hinge means includes an extension of the frame associated with each plate, the extension of one frame being arranged in contiguous relationship to the corresponding Extension of the other frame, a connecting means on said first and second extensions for pivotally joining said plate means, and said locking means including a pair of recesses in one of said extensions spaced apart by 180*, at least one projection in the other of said extension which is received in one of said recesses in the closed position and is movable to and received in the other of said recesses in the open position.
References Cited (Backward Citations)
US2038699A
Cited
US2196550A
Cited
US2613463A
Cited
US2760185A
Cited
US2898878A
Cited
US3580659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |