US4378473A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Retractable drop light
Assignee: Individual
•
Filing: 1981-02-05
•
Granted: 1983-03-29
•
Expires: 2001-02-05
Abstract
Abstract A locking and release mechanism for use in connection with retractable drop lights is disclosed including a spring loaded reel mounted for rotational movement so that a conductor for the drop light can be reeled and unreeled therefrom. The mechanism includes a ratchet rotatable with the reel, a pawl pivotably mounted adjacent to the ratchet so that the pawl can be rotated between positions engaging the ratchet and disengaging the ratchet, thus permitting the spring loaded reel to rewind the conductor, a solenoid for pivoting the pawl between those two positions, and a switch located in proximity to the drop light itself for connection to the solenoid through the conductor so that the solenoid can be selectively activated from that switch location.
Inventors
- 👤 Kenneth C. Noorigian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:47
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/34; B65H75/38; B65H75/44; B65H75/4418; B65H75/4428; H; H02; H02G; H02G11/00; H02G11/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
228 words
A locking and release mechanism for use in connection with a retractable drop light comprising a spring loaded reel member mounted for rotational movement whereby a conductor means for said drop light may be reeled and unreeled from said spring loaded reel member, a ratchet member fixed to said reel member for rotation therewith, a pawl member pivotably mounted adjacent to said ratchet member, said pawl member pivotable between first and second positions, said first position being the normal rest position for said pawl member, whereby said pawl member engages said ratchet member when said pawl member is in said first position so as to prevent said reel member from rewinding under the force of said spring loaded reel member, and said pawl member disengages from said ratchet member when said pawl member is in said second position so as to permit said reel member to freely rewind under the influence of said spring, electrically operated means for pivoting said pawl member from said first position to said second position only upon activation of said electronically operated means, and switch means located in proximity to said drop light for connection to said electrically operated means through said conductor means whereby said electrically operated means may be selectively activated from a location proximate to said drop light for remotely controlling said pawl member between said first and second positions.
Claim 2
Dependent Claim
228 words
A locking and release mechanism for use in connection with a retractable drop light comprising a spring loaded reel member mounted for rotational movement whereby a conductor means for said drop light may be reeled and unreeled from said spring loaded reel member, a ratchet member fixed to said reel member for rotation therewith, a pawl member pivotably mounted adjacent to said ratchet member, said pawl member pivotable between first and second positions, said first position being the normal rest position for said pawl member, whereby said pawl member engages said ratchet member when said pawl member is in said first position so as to prevent said reel member from rewinding under the force of said spring loaded reel member, and said pawl member disengages from said ratchet member when said pawl member is in said second position so as to permit said reel member to freely rewind under the influence of said spring, electrically operated means for pivoting said pawl member from said first position to said second position only upon activation of said electronically operated means, and switch means located in proximity to said drop light for connection to said electrically operated means through said conductor means whereby said electrically operated means may be selectively activated from a location proximate to said drop light for remotely controlling said pawl member between said first and second positions.
Claim 3
Dependent Claim
16 words
The locking and release mechanism of claim 1 wherein said electrically operated means comprises solenoid means.
Claim 4
Dependent Claim
68 words
The locking and release mechanism of claim 2 wherein said pawl member is pivotably mounted on an axle member, and said pawl member includes a first end and a second end, said first end of said pawl member engaging said ratchet member when said pawl member is in said first position, and said second end of said pawl member being associated with the core of said solenoid means.
Claim 5
Dependent Claim
98 words
The locking and release mechanism of claim 3 wherein said second end of said pawl member is in engagement with said core of said solenoid means, and including spring means associated with said core, said spring means engaging said second end of said pawl member and urging said pawl member to rotate about said axle member so that said first end of said pawl member engages said ratchet member, whereby said solenoid means must overcome said spring means in order to pivot said pawl member into said second position to thereby permit said reel member to freely rewind.
Claim 6
Dependent Claim
24 words
The locking and release mechanism of claim 1 wherein said drop light includes a handle and said switch means is located on said handle.
Claim 7
Dependent Claim
41 words
The locking and release mechanism of claim 1 wherein said switch means comprises a push button switch, whereby when said push button is depressed, said electrically operated member is activated and said pawl member is thereby pivoted into said second position.
References Cited (Backward Citations)
US1975419A
Cited
US2998277A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |