US4463754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety control and lock for anesthetic vaporizers
Assignee: Southmedic Inc
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Filing: 1983-08-11
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Granted: 1984-08-07
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Expires: 2003-08-11
Abstract
Abstract A control device for anesthetic vaporizers disclosed herein ensures that the operator is able to select a desired anesthetic with certainty, and to assure that other anesthetic vaporizer apparatus also in use is in an "off" condition when one anesthetic has been selected. The apparatus also includes a setting at which all of a plurality of associated anesthetic vaporizers are safely "off". The invention comprises a rotatable rod adapted for mounting on an assembly of anesthetic vaporizer tanks, the rod having a plurality of C-collars thereon, the opening in each C-collar adapted to receive a flat spiral wing projecting from the on/off control on an anesthetic vaporizer. The C-collars also permit a setting at which it is impossible to open any of the associated anesthetic vaporizers. The control mechanism includes visual indicia as well as an audible indicator when a correct setting has been selected by the operator.
Inventors
- 👤 Sandy McDonald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:01
CPC Classifications
A; A61; A61M; A61M16/00; A61M16/10; A61M16/14; A61M16/18; A61M16/186; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87048; Y10T137/87096; Y10T137/87113; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20582; Y10T74/2063
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
A safety control and lock for anesthetic vaporizers comprising: a supporting bracket; a rod rotatably mounted in the supporting bracket; a plurality of C-collars, each C-collar mounted around and longitudinally spaced on said rod such as to be rotatable therewith, each C-collar having a longitudinal opening the longitudinal openings of each C-collar being radially offset from each other; an assembly of anesthetic vaporizer tanks mounted on said support bracket adjacent each C-collar; each of said tanks having a rotatable control knob including a radially extending horizontal flat spiral wing conjointly rotatable therewith into engagement with a C-collar on said rod and receivable in the opening thereof when said opening is rotated into horizontal alignment with said wing; said C-collar engaging said wing and preventing rotation of said control knob when said opening in said C-collar is not in horizontal alignment with said wing.
Claim 2
Dependent Claim
143 words
A safety control and lock for anesthetic vaporizers comprising: a supporting bracket; a rod rotatably mounted in the supporting bracket; a plurality of C-collars, each C-collar mounted around and longitudinally spaced on said rod such as to be rotatable therewith, each C-collar having a longitudinal opening the longitudinal openings of each C-collar being radially offset from each other; an assembly of anesthetic vaporizer tanks mounted on said support bracket adjacent each C-collar; each of said tanks having a rotatable control knob including a radially extending horizontal flat spiral wing conjointly rotatable therewith into engagement with a C-collar on said rod and receivable in the opening thereof when said opening is rotated into horizontal alignment with said wing; said C-collar engaging said wing and preventing rotation of said control knob when said opening in said C-collar is not in horizontal alignment with said wing.
Claim 3
Dependent Claim
87 words
A safety control and lock for anesthetic vaporizers according to claim 1, said rod having three C-collars thereon, the opening in each C-collar being separated by 90° from the opening in an adjacent C-collar, whereby a 90° rotation of said rod will selectively align the opening in one of said C-collars with an adjacent anesthetic vaporizer tank control knob, and whereby said rod may be rotated to a position wherein none of said openings in said C-collars is in alignment with its adjacent vaporizer tank control knob.
Claim 4
Dependent Claim
56 words
A safety control and lock for anesthetic vaporizers according to claim 2, said rod including a plurality of indicia to indicate which anesthetic vaporizer tank control knob is in alignment with the opening of a C-collar, and further indicia to indicate that none of said anesthetic tank control knobs may be rotated to an open position.
Claim 5
Dependent Claim
43 words
A safety control and lock for anesthetic vaporizers according to claim 2, said rod including an internal spring-loaded ball adapted to be engaged with indentations in said bracket, whereby an audible click indicates that the control has been set in a desired position.
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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) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |