Patent US4556269A successfully refreshed from Google Patents.
Patent US3952190A successfully refreshed from Google Patents.
US3952190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Underwater strobe flash unit
Assignee: Individual
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Filing: 1974-11-08
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Granted: 1976-04-20
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Expires: 1994-11-08
Abstract
Abstract A method of waterproofing a strobe flash unit for use in underwater photography. A mold is formed and a strobe flash unit is mounted within the mold. Epoxy resin is poured into the mold to surround the strobe flash unit with the resin. The resin is then cured until it hardens, at which time the mold is removed from the epoxy resin and strobe flash unit. The resultant product is a strobe flash unit encapsulated in a transparent waterproof casing.
Inventors
- 👤 Ronald L. Perkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:04
CPC Classifications
F; F21; F21V; F21V31/00; G; G03; G03B; G03B15/00; G03B15/02; G03B15/03; G03B15/05; G03B2215/00; G03B2215/05; G03B2215/0514; G03B2215/0517; G03B2215/0542
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
138 words
A method of waterproofing a strobe flash unit including a synchronizing switch actuated by cable means and power supply for use in underwater photography, comprising: providing an elastomer mold; mounting a strobe flash unit and power supply within said mold; forming an aperture through one surface of said mold; extending a cable slightly larger than said aperture through said aperture to said strobe flash unit; attaching said cable to said synchronizing switch to operatively connect said cable and said switch; electrically connecting said strobe flash unit, said switch and said power supply; pouring epoxy resin into said mold to surround said strobe flash unit and power supply; curing said epoxy resin in said mold; removing said mold from said epoxy resin, whereby said strobe flash unit and power supply are encapsulated in a waterproof casing of epoxy resin.
Claim 2
Independent Claim
138 words
A method of waterproofing a strobe flash unit including a synchronizing switch actuated by cable means and power supply for use in underwater photography, comprising: providing an elastomer mold; mounting a strobe flash unit and power supply within said mold; forming an aperture through one surface of said mold; extending a cable slightly larger than said aperture through said aperture to said strobe flash unit; attaching said cable to said synchronizing switch to operatively connect said cable and said switch; electrically connecting said strobe flash unit, said switch and said power supply; pouring epoxy resin into said mold to surround said strobe flash unit and power supply; curing said epoxy resin in said mold; removing said mold from said epoxy resin, whereby said strobe flash unit and power supply are encapsulated in a waterproof casing of epoxy resin.
Claim 3
Dependent Claim
94 words
The method set forth in claim 1, wherein the step of mounting said strobe flash unit and said power supply within said mold includes: placing a plurality of support members at spaced points on the bottom of said mold; and mounting said strobe flash unit and said power supply on said support members, whereby said strobe flash unit and said power supply are spaced from the bottom of said mold so that said epoxy resin flows beneath said strobe flash unit and said power supply as said epoxy resin is poured into said mold.
Claim 4
Dependent Claim
27 words
The method as set forth in claim 1, further including: providing a plurality of epoxy resin support members for supporting the flash unit elements in the mold.
Claim 5
Dependent Claim
20 words
The method set forth in claim 1, further including: sealing said cable in said epoxy resin after removing said mold.
Claim 6
Independent Claim
138 words
A method of waterproofing a strobe flash unit including a power switch having a base and an actuating mechanism to connect said strobe flash unit to a power source for use in underwater photography, comprising: providing an elastomer mold; mounting a strobe flash unit, power switch, and power source within said mold; forming an aperture in one surface of said mold; extending the base of the power switch through said aperture into said mold; electrically connecting said power switch to said strobe flash unit and said power supply; pouring epoxy resin into said mold to surround said strobe flash unit, power switch, and power source; curing said epoxy resin in said mold; removing said mold from said epoxy resin, whereby said strobe flash unit, power switch, and power source are encapsulated in a waterproof casing of epoxy resin.
Claim 7
Independent Claim
138 words
A method of waterproofing a strobe flash unit including a power switch having a base and an actuating mechanism to connect said strobe flash unit to a power source for use in underwater photography, comprising: providing an elastomer mold; mounting a strobe flash unit, power switch, and power source within said mold; forming an aperture in one surface of said mold; extending the base of the power switch through said aperture into said mold; electrically connecting said power switch to said strobe flash unit and said power supply; pouring epoxy resin into said mold to surround said strobe flash unit, power switch, and power source; curing said epoxy resin in said mold; removing said mold from said epoxy resin, whereby said strobe flash unit, power switch, and power source are encapsulated in a waterproof casing of epoxy resin.
Claim 8
Dependent Claim
21 words
The method set forth in claim 5, further including: sealing said power switch in said epoxy resin after removing said mold.
Claim 9
Independent Claim
114 words
A method of waterproofing a strobe flash unit including a light actuated synchronizing assembly contained in a housing and power supply for use in underwater photography, comprising: providing an elastomer mold; mounting a strobe flash unit and power supply within said mold; electrically connecting said synchronizing assembly with said strobe flash unit; electrically connecting said strobe flash unit and said power supply; mounting said synchronizing assembly within said mold; pouring epoxy resin into said mold to surround said strobe flash unit and power supply; curing said epoxy resin in said mold; removing said mold from epoxy resin, whereby said strobe flash unit and power supply is encapsulated in a waterproof casing of epoxy resin.
Claim 10
Independent Claim
114 words
A method of waterproofing a strobe flash unit including a light actuated synchronizing assembly contained in a housing and power supply for use in underwater photography, comprising: providing an elastomer mold; mounting a strobe flash unit and power supply within said mold; electrically connecting said synchronizing assembly with said strobe flash unit; electrically connecting said strobe flash unit and said power supply; mounting said synchronizing assembly within said mold; pouring epoxy resin into said mold to surround said strobe flash unit and power supply; curing said epoxy resin in said mold; removing said mold from epoxy resin, whereby said strobe flash unit and power supply is encapsulated in a waterproof casing of epoxy resin.
Claim 11
Dependent Claim
92 words
A strobe flash unit and power supply adapted for use in underwater photography, comprising: means for emitting light including: a lamp; energizing means electrically connected to a power supply for energizing said lamp; a power switch for connecting and disconnecting said power supply from said energizing means; said lamp, energizing means, power supply, and power switch constituting a means for emitting light; and water tight casing means enclosing said means for emitting light for preventing water from contacting said means for emitting light, said casing means encapsulating said means for emitting light.
Claim 12
Dependent Claim
92 words
A strobe flash unit and power supply adapted for use in underwater photography, comprising: means for emitting light including: a lamp; energizing means electrically connected to a power supply for energizing said lamp; a power switch for connecting and disconnecting said power supply from said energizing means; said lamp, energizing means, power supply, and power switch constituting a means for emitting light; and water tight casing means enclosing said means for emitting light for preventing water from contacting said means for emitting light, said casing means encapsulating said means for emitting light.
Claim 13
Dependent Claim
15 words
The structure set forth in claim 8, wherein: said watertight casing means is epoxy resin.
Claim 14
Dependent Claim
91 words
The structure set forth in claim 8, wherein said energizing means includes: a. a light sensitive means for producing a signal in response to light transmitted to the light sensitive means; and b. a silicon controlled rectifier electrically connected to and actuated by said signal from said light sensitive means for energizing said lamp in response to the signal produced by said light sensitive means, whereby said lamp is energized when said power switch connects said energizing circuit to said power supply and light is transmitted to said light sensitive means.
Claim 15
Dependent Claim
107 words
A strobe flash unit and power supply adapted for use in underwater photography, comprising: means for emitting light; a power supply electrically connected to said means for emitting light; water tight casing means enclosing said means for emitting light and said power supply for preventing water from contacting said means for emitting light and said power supply, said casing means encapsulating said means for emitting light and said power supply; and recharging connector means partially embedded in said casing means and electrically connected to said power supply for providing electrical connection for detachably engaging a supplementary energy source to said power supply for recharging said power supply.
Claim 16
Dependent Claim
107 words
A strobe flash unit and power supply adapted for use in underwater photography, comprising: means for emitting light; a power supply electrically connected to said means for emitting light; water tight casing means enclosing said means for emitting light and said power supply for preventing water from contacting said means for emitting light and said power supply, said casing means encapsulating said means for emitting light and said power supply; and recharging connector means partially embedded in said casing means and electrically connected to said power supply for providing electrical connection for detachably engaging a supplementary energy source to said power supply for recharging said power supply.
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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) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |