US3595222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laryngoscope
Assignee: Individual
•
Filing: 1968-06-10
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Granted: 1971-07-27
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Expires: 1988-06-10
Abstract
Abstract A laryngoscope comprising a main body provided by an integral moulding with handle and blade portions the latter of which has a forwardly facing socket for a light bulb. The handle is adapted to house a dry cell battery for operating the bulb and the laryngoscope incorporates a fixed electrical lead comprising a brass tube for electrically interconnecting a side terminal of the bulb with one terminal of the battery. A mobile electrical lead is provided for insertion into the brass tube which is embedded in the blade and which terminates at the socket, and the lower end of the handle incorporates manually operable means for moving the battery upwardly within the handle and towards the blade to an operative position in which the two ends of the mobile lead are respectively urged into contact with the central end terminal of the bulb and the other terminal of the battery.
Inventors
- 👤 William Noel Vellacott
- 👤 Anthony James Sear
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:11
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/267; A61B1/00002; A61B1/00025; A61B1/00027; A61B1/00032; A61B1/06; A61B1/0661; A61B1/0676
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
185 words
A laryngoscope comprising an integral molded body comprising a hollow handle portion housing a dry cell battery and a hollow, forwardly extending blade portion, an electrically conductive tube member mounted in the blade portion and provided with a forwardly facing light bulb socket, a fixed electrical lead in circuit between the battery and saiD tube member and embedded in said handle portion, an internally threaded sleeve embedded in the handle portion of the lower end thereof, said fixed lead terminating around the sleeve as a spring arm which is connected to the sleeve, a mobile electrical lead which extends from said handle portion of said light bulb socket for contact-making engagement with an end terminal of the battery, said tube member being shorter than the mobile lead and through which said lead extends, and a threaded member screwed into the sleeve to act through the battery to urge the mobile lead in the tube member towards the light bulb socket, whereby to effect bowing of the mobile lead in the tube member to provide a spring contact pressure at each end of the mobile lead.
Claim 2
Dependent Claim
185 words
A laryngoscope comprising an integral molded body comprising a hollow handle portion housing a dry cell battery and a hollow, forwardly extending blade portion, an electrically conductive tube member mounted in the blade portion and provided with a forwardly facing light bulb socket, a fixed electrical lead in circuit between the battery and saiD tube member and embedded in said handle portion, an internally threaded sleeve embedded in the handle portion of the lower end thereof, said fixed lead terminating around the sleeve as a spring arm which is connected to the sleeve, a mobile electrical lead which extends from said handle portion of said light bulb socket for contact-making engagement with an end terminal of the battery, said tube member being shorter than the mobile lead and through which said lead extends, and a threaded member screwed into the sleeve to act through the battery to urge the mobile lead in the tube member towards the light bulb socket, whereby to effect bowing of the mobile lead in the tube member to provide a spring contact pressure at each end of the mobile lead.
Claim 3
Dependent Claim
36 words
A laryngoscope according to claim 1, wherein the handle has an aperture which is closed by a detachable side cover and through which the battery can be loaded in the handle and the mobile lead withdrawn.
Claim 4
Dependent Claim
19 words
A laryngoscope according to claim 1, wherein the mobile lead is of stainless steel wire with an insulating sheath.
Claim 5
Dependent Claim
31 words
A laryngoscope according to claim 1, wherein said means for completing the circuit operate to move the battery upwardly within the handle to urge the mobile lead towards the bulb socket.
Claim 6
Dependent Claim
153 words
A laryngoscope comprising a molded body comprising a handle portion which provides a battery housing and a hollow, forwardly extending blade portion, an electrically conductive tube member mounted in the blade portion and provided with a forwardly facing light bulb socket, a fixed electrical lead interconnecting a side terminal of said tube member with one end of said battery housing, a removable and mobile electrical lead which extends from the other end of said battery housing to said bulb socket for contact-making engagement with an end terminal of said bulb, said tube member having an internal passage through which the mobile lead extends, and manually operable means for completing the bulb-energizing circuit through said fixed and mobile leads, said mobile lead being longer than said passage thereby in use the mobile lead bows to provide a spring contact pressure at one end with the battery and at the other end with the bulb.
Claim 7
Dependent Claim
153 words
A laryngoscope comprising a molded body comprising a handle portion which provides a battery housing and a hollow, forwardly extending blade portion, an electrically conductive tube member mounted in the blade portion and provided with a forwardly facing light bulb socket, a fixed electrical lead interconnecting a side terminal of said tube member with one end of said battery housing, a removable and mobile electrical lead which extends from the other end of said battery housing to said bulb socket for contact-making engagement with an end terminal of said bulb, said tube member having an internal passage through which the mobile lead extends, and manually operable means for completing the bulb-energizing circuit through said fixed and mobile leads, said mobile lead being longer than said passage thereby in use the mobile lead bows to provide a spring contact pressure at one end with the battery and at the other end with the bulb.
Claim 8
Dependent Claim
40 words
A laryngoscope according to claim 5, wherein said mobile lead has an insulating sheath and said electrically conductive tube is embedded in said blade portion with the forward end of the tube screw threaded to provide said light bulb socket.
Claim 9
Dependent Claim
51 words
A laryngoscope according to claim 6, wherein said fixed lead is embedded in said handle portion of the molding and interconnects the tube and an internally threaded sleeve disposed internally at the lower end of the handle, and wherein an end cap threaded into the sleeve provides said manually operable means.
Claim 10
Dependent Claim
34 words
A laryngoscope according to claim 5, wherein the metal tube forms part of an electrically conducting subassembly which also includes said sleeve and which is prefabricated from metal and embedded in the body molding.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |