Patent US4867939A successfully refreshed from Google Patents.
Patent US4669990A successfully refreshed from Google Patents.
US4669990A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal device
Assignee: Individual
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Filing: 1984-07-30
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Granted: 1987-06-02
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Expires: 2004-07-30
Abstract
Abstract The battery operated signal device employs a gravity operated switching system with a time delay. The time delay is effected in one embodiment by having a weighted element move through a tortuous path when the signal device is thrown into the water before activating the contacts of a switch to energize a circuit. In other embodiments, the time delay is effected by pendular members which pivot when the signal device is inverted to either actuate a switch or to permit passage of a ball to actuate the switch. The time delay extends the time required to turn on the light so that forces developed on the light by the pitching, plunging and rolling action of a vessel do not result in intermittent unwanted operation.
Inventors
- 👤 Kevin McDermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:20
CPC Classifications
B; B63; B63C; B63C9/00; B63C9/21; H; H01; H01H; H01H35/00; H01H35/02; H01H7/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
109 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; a switch in said housing for actuating said signal means; a tortuous passageway in said housing extending from said switch towards said lower end of said housing, said passageway having a series of at least three sections arranged in zig-zag manner; and an element disposed within said passageway for actuating said switch, said element being movably disposed in said passageway near said lower end of said housing for movement through said passageway under gravity towards an upper end of said housing in response to inversion of said housing.
Claim 2
Dependent Claim
109 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; a switch in said housing for actuating said signal means; a tortuous passageway in said housing extending from said switch towards said lower end of said housing, said passageway having a series of at least three sections arranged in zig-zag manner; and an element disposed within said passageway for actuating said switch, said element being movably disposed in said passageway near said lower end of said housing for movement through said passageway under gravity towards an upper end of said housing in response to inversion of said housing.
Claim 3
Dependent Claim
16 words
A signal device as set forth in claim 1 wherein said signal means is a light.
Claim 4
Dependent Claim
29 words
A signal device as set forth in claim 1 which further comprises at least one restriction in said passageway for braking the movement of said element towards said switch.
Claim 5
Dependent Claim
22 words
A signal device as set forth in claim 1 wherein said element is a disc and said passageway has a rectangular cross-section.
Claim 6
Dependent Claim
43 words
A signal device as set forth in claim 1 wherein said signal means includes a light at said lower end; a battery selectively connected to said light, said switch being interposed between said battery and said light and having a time delay characteristic.
Claim 7
Dependent Claim
18 words
A signal device as set forth in claim 1 wherein said switch and said element are magnetically co-responsive
Claim 8
Dependent Claim
113 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of said housing with a time delay of at least 0.075 seconds, said switching system comprising a pair of switches connected in series; a pair of passageways located in vertical planes set angularly to each other in non-parallel relation, each passageway extending to a respective switch; and a pair of elements, each element being movably mounted in a respective passageway to move through said respective passageway under gravity to actuate a respective switch.
Claim 9
Dependent Claim
113 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of said housing with a time delay of at least 0.075 seconds, said switching system comprising a pair of switches connected in series; a pair of passageways located in vertical planes set angularly to each other in non-parallel relation, each passageway extending to a respective switch; and a pair of elements, each element being movably mounted in a respective passageway to move through said respective passageway under gravity to actuate a respective switch.
Claim 10
Dependent Claim
101 words
A gravity actuated switching system comprising contacting means for energizing a circuit; a vertically disposed tortuous passageway having said contact means at an upper end and repeated turns extending from said contact means, said passageway having a series of at least three sections arranged in a zig-zag manner; and a weighted body disposed in said passageway in spaced relation to said contact means, said body being sized to move downwardly through said passageway under gravity upon inversion of said passageway to close said contact means in response to said contact means being then disposed at a lower end of said passageway.
Claim 11
Dependent Claim
101 words
A gravity actuated switching system comprising contacting means for energizing a circuit; a vertically disposed tortuous passageway having said contact means at an upper end and repeated turns extending from said contact means, said passageway having a series of at least three sections arranged in a zig-zag manner; and a weighted body disposed in said passageway in spaced relation to said contact means, said body being sized to move downwardly through said passageway under gravity upon inversion of said passageway to close said contact means in response to said contact means being then disposed at a lower end of said passageway.
Claim 12
Dependent Claim
28 words
A gravity actuated switching system as set forth in claim 8 wherein said passageway includes a restriction for braking the movement of said body towards said contact means.
Claim 13
Dependent Claim
24 words
A gravity actuated switching system as set forth in claim 8 wherein said body is a disc and said passageway has a non-round cross-section.
Claim 14
Dependent Claim
17 words
A gravity actuated switching system as set forth in claim 8 wherein said body is electrically conductive.
Claim 15
Dependent Claim
18 words
A gravity actuating switching system as set forth in claim 11 wherein said passageway includes electrically conductive walls.
Claim 16
Dependent Claim
134 words
A signal device comprising a buoyant housing signal means mounted at a lower end of said housing for emitting a signal; a switch in said housing for actuating said signal means; a passageway in said housing extending from said switch towards said lower end of said housing; an element disposed within said passageway for actuating said switch, said element being movably disposed in said passageway near said lower end of said housing for movement through said passageway under gravity toward an upper end of said housing in response to inversion of said housing; and means within said passageway to retard movement of said element through said passageway, said means including at least one pendular member mounted in said housing to move between a rest position and a position permitting movement of said element thereby.
Claim 17
Dependent Claim
134 words
A signal device comprising a buoyant housing signal means mounted at a lower end of said housing for emitting a signal; a switch in said housing for actuating said signal means; a passageway in said housing extending from said switch towards said lower end of said housing; an element disposed within said passageway for actuating said switch, said element being movably disposed in said passageway near said lower end of said housing for movement through said passageway under gravity toward an upper end of said housing in response to inversion of said housing; and means within said passageway to retard movement of said element through said passageway, said means including at least one pendular member mounted in said housing to move between a rest position and a position permitting movement of said element thereby.
Claim 18
Dependent Claim
121 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of said housing with a time delay of at least 0.075 seconds, said switching system including a switch having contact means disposed in a normally open position, a tortuous passageway extending from said contact means including a series of at least three sections to change the direction of motion of a movable element therein and an element movably disposed in said passageway and sized to move through said passageway under gravity to close said contact means upon inversion of said housing.
Claim 19
Dependent Claim
121 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of said housing with a time delay of at least 0.075 seconds, said switching system including a switch having contact means disposed in a normally open position, a tortuous passageway extending from said contact means including a series of at least three sections to change the direction of motion of a movable element therein and an element movably disposed in said passageway and sized to move through said passageway under gravity to close said contact means upon inversion of said housing.
Claim 20
Dependent Claim
94 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of said housing, said switching system including a switch having contact means disposed in a normally open position, a tortuous passageway in the form of a helix extending from said contact means and an element movably disposed in said passageway and sized to move through said passageway under gravity to close said contact means.
Claim 21
Dependent Claim
94 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of said housing, said switching system including a switch having contact means disposed in a normally open position, a tortuous passageway in the form of a helix extending from said contact means and an element movably disposed in said passageway and sized to move through said passageway under gravity to close said contact means.
Claim 22
Dependent Claim
89 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of the housing, said switching system includes a switch having contact means disposed in a normally open position, a tortuous spiral passageway extending from said contact means and an element movably disposed in said passageway and sized to move through said passageway under gravity to close said contact means.
Claim 23
Dependent Claim
89 words
A signal device comprising a buoyant housing; signal means mounted at a lower end of said housing for emitting a signal; and a time-delayed gravity-operated switching system disposed in said housing for actuating said signal means in response to inversion of the housing, said switching system includes a switch having contact means disposed in a normally open position, a tortuous spiral passageway extending from said contact means and an element movably disposed in said passageway and sized to move through said passageway under gravity to close said contact means.
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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) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |