Patent US3984645A successfully refreshed from Google Patents.
US3984645A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lightweight headset and retractable cord spool
Assignee: Individual
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Filing: 1974-12-02
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Granted: 1976-10-05
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Expires: 1994-12-02
Abstract
Abstract A lightweight headset for communication systems having a cord spool with a retraction mechanism for storing a cord which is electrically connected at one end of the headset and at the other end to a plug. The cord spool, wearable on the person of a user, allows a substantial portion of the cord at the plug end to be contained within the case and extended for use when necessary.
Inventors
- 👤 Warren J. Kresch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:52
CPC Classifications
H; H04; H04M; H04M1/00; H04M1/02; H04M1/15; H04M1/04; H04M1/05
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
169 words
A headset for communication systems comprising: transducer means; support means for supporting said transducer means on the head of an operator; a cord with electrical lines and a connector terminal, said electrical lines electrically connected at a first end to said transducer means and electrically connected at a second end to said connector terminal; and a cord spool, said cord having an intermediate mechanical connection with said cord spool forming a first segment of cord between said cord spool and said headset, said first segment between said cord spool and said headset being fixed in length, and a second segment between said cord spool and said connector terminal, said first segment and said second segment having electrical lines which are continuous through said cord spool, said cord spool having a rotatable mandril for storing said second segment of cord in a winding on said mandril, said cord spool further having retraction means for automatically retracting said second segment onto said mandril after said second segment has been manually withdrawn.
Claim 2
Dependent Claim
169 words
A headset for communication systems comprising: transducer means; support means for supporting said transducer means on the head of an operator; a cord with electrical lines and a connector terminal, said electrical lines electrically connected at a first end to said transducer means and electrically connected at a second end to said connector terminal; and a cord spool, said cord having an intermediate mechanical connection with said cord spool forming a first segment of cord between said cord spool and said headset, said first segment between said cord spool and said headset being fixed in length, and a second segment between said cord spool and said connector terminal, said first segment and said second segment having electrical lines which are continuous through said cord spool, said cord spool having a rotatable mandril for storing said second segment of cord in a winding on said mandril, said cord spool further having retraction means for automatically retracting said second segment onto said mandril after said second segment has been manually withdrawn.
Claim 3
Dependent Claim
52 words
The headset of claim 1 wherein said transducer means comprises a receiver transducer, and wherein said cord has further a key for switching from transmit to receive connected to said first segment of cord, said key having switching means for switching between electrical lines connecting said receiver transducer and said transmitter transducer.
Claim 4
Dependent Claim
50 words
The headset of claim 1 wherein said retraction means includes a ratchet means for selectively maintaining in position a withdrawn length of said second segment of said cord, a return button adapted to disengage said ratchet means and a coiled leafspring means for rotating said mandril and retracting said cord.
Claim 5
Dependent Claim
23 words
The headset of claim 1 comprising further attachment means on said cord spool for attaching said spool to the person of an operator.
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) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |