Patent US2504657A successfully refreshed from Google Patents.
Patent US3736683A successfully refreshed from Google Patents.
US3736683A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-repetitive flashing display mechanism
Assignee: BJORKSTEM RESEARCH LABOR
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Filing: 1971-02-23
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Granted: 1973-06-05
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Expires: 1991-02-23
Abstract
Abstract An advertising display which simulates a firefly, comprising an unrepetitive or random motion device based on reciprocating means actuating a flexible rod carrying a flashing device, where the motion is distorted by means of an off vertical crank shaft.
Inventors
- 👤 E Paquette
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:25
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/02; G09F19/10; G09F11/00; G09F11/23
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
115 words
A non-repetitive random motion display device for simulating a firefly comprising: an elongated flexible elastic wand, a lamp disposed on one end of said wand, a rotating crank means, said crank means having an off vertical crank pin mounted thereon, an elongated connecting link, an opening disposed at one end of said link and having said crank pin mounted therein, the opposite end of said link having an opening through which the opposite end of said wand protrudes, the clearance between the sides of said opposite end opening and said wand being at least one-eighth inch so as to permit random motion of said wand within said opposite end opening and thereby simulate a firefly.
Claim 2
Dependent Claim
115 words
A non-repetitive random motion display device for simulating a firefly comprising: an elongated flexible elastic wand, a lamp disposed on one end of said wand, a rotating crank means, said crank means having an off vertical crank pin mounted thereon, an elongated connecting link, an opening disposed at one end of said link and having said crank pin mounted therein, the opposite end of said link having an opening through which the opposite end of said wand protrudes, the clearance between the sides of said opposite end opening and said wand being at least one-eighth inch so as to permit random motion of said wand within said opposite end opening and thereby simulate a firefly.
Claim 3
Dependent Claim
20 words
The random motion device of claim 1, in which the said crank pin has at least a 1/4 inch throw.
Claim 4
Dependent Claim
23 words
The random motion device of claim 2, in which the throw of the said crank pin is between 3/16 inch and 1 inch.
Claim 5
Dependent Claim
33 words
The random motion device of claim 1, in which the said crank pin has an angle with the plane of motion of the crank means at least 2* to 5* off the perpendicular.
Claim 6
Dependent Claim
15 words
The device of claim 4, in which the said angle is between 1* and 10*.
Claim 7
Dependent Claim
21 words
The random motion device of claim 1, in which the crank means has a rotational speed between 12 and 36 rpm.
Claim 8
Dependent Claim
75 words
The random motion device of claim 1, in which the throw of said crank pin is between 3/16 inch and 1 inch, the rotational speed of said crank means between 12 and 36 rpm, a line perpendicular to the plane of the crank forms an angle between 1* and 10* with the crank pin, and the clearance between the sides of said opposite end opening and said wand is between 1/8 inch and 3 inches.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-04 | 1976-12-04 | 1977-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-04 | 1980-12-04 | 1981-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-04 | 1984-12-04 | 1985-06-05 | $7700.00 | Window Closed / Lapsed |