Patent US4254341A successfully refreshed from Google Patents.
US4254341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiation protection device, particularly for medical X-ray, radiation therapy and diagnostic use
Assignee: U S SMALL BUSINESS ADMINISTRATION
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Filing: 1979-09-04
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Granted: 1981-03-03
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Expires: 1999-09-04
Abstract
Abstract To protect doctors and other personnel from stray radiation when using therapeutic or diagnostic X-ray or other radiation apparatus, a lead apron is suspended from a dolly or carriage rolling in a track system secured to the ceiling in which the radiation apparatus is located. The dolly or carriage can be similar to that of already existing rolling equipment. It has a centrally positioned hanger arrangement which has a turning hanger secured to the dolly to which a tension spring is attached which supports the lead apron hanger, by having attached thereto an element generally in the form of a clothes hanger from which the apron, itself, is suspended by means of an adjustable strap suspension. Preferably, an intermediate strap suspension is further interposed between the hanger and holding spring which, in turn, is supported from a swing arm attached to the dolly or carriage, the swing arm permitting lateral excursion matched preferably to the lateral swing of diagnostic apparatus, such as a fluoroscopy monitor. The spring should be sufficiently strong to support the weight of standard lead aprons with an elongation of, preferably, less than its normal, unstressed length.
Inventors
- 👤 Marianne Herr
- 👤 Stephen H. Frishauf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:40
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4429; A61B6/447; A61B6/10; A61B6/107; G; G21; G21F; G21F3/00; G21F3/02; G21F3/03
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
153 words
Personal radiation protection device, particularly for X-ray and radiation therapy and diagnosis, in which X-ray or radiation apparatus is installed in a room, and in which a lead apron (20) is worn by the operator personally to protect the operator from radiation, wherein the improvement comprises a track system (10) secured to the ceiling of the room; a roller suspension dolly or carriage (12) rolling on and suspended in the track system; a clothes hanger-like apron suspension (16) suspended from the dolly and moving with the dolly upon rolling movement of the dolly on the track system; suspension means (41, 42; 41', 42') suspending the apron (20) in its shoulder region from the clothes hanger-like apron suspension (16); and means resiliently suspending the clothes hanger-like apron suspension from the dolly (12) including a tension spring (15) and a rotary suspension support (13; 14, 27; 34, 35, 36) secured to the dolly or carriage.
Claim 2
Dependent Claim
153 words
Personal radiation protection device, particularly for X-ray and radiation therapy and diagnosis, in which X-ray or radiation apparatus is installed in a room, and in which a lead apron (20) is worn by the operator personally to protect the operator from radiation, wherein the improvement comprises a track system (10) secured to the ceiling of the room; a roller suspension dolly or carriage (12) rolling on and suspended in the track system; a clothes hanger-like apron suspension (16) suspended from the dolly and moving with the dolly upon rolling movement of the dolly on the track system; suspension means (41, 42; 41', 42') suspending the apron (20) in its shoulder region from the clothes hanger-like apron suspension (16); and means resiliently suspending the clothes hanger-like apron suspension from the dolly (12) including a tension spring (15) and a rotary suspension support (13; 14, 27; 34, 35, 36) secured to the dolly or carriage.
Claim 3
Dependent Claim
24 words
Radiation protection device according to claim 1, wherein the rotary suspension support includes a swinging arm (14) secured to the dolly or carriage (12).
Claim 4
Dependent Claim
25 words
Radiation protection device according to claim 1, wherein the spring has a carrying force which is approximately matched to the weight of the apron (20).
Claim 5
Dependent Claim
27 words
Radiation protection device according to claim 1, further including an intermediate length-adjustable suspension element (17) interposed between the spring (15) and the clothes hanger-like apron suspension (16).
Claim 6
Dependent Claim
27 words
Radiation protection device according to claim 1, wherein the suspension means includes at least one of: ropes, webs, straps, belts, of nylon, cotton, or artificial fiber-cotton mixtures.
Claim 7
Dependent Claim
77 words
Radiation protection device according to claim 1, wherein the track system (10) includes a pair of U-tracks, secured to the ceiling of the room with the open portion of the U facing each other, one leg of the U of each one of the tracks being positioned adjacent the ceiling of the room; and wherein the dolly or carriage (12) comprises an elongated plate (22) having wheels (21) laterally fitting into the open U-tracks and engaged therein.
Claim 8
Dependent Claim
75 words
Radiation protection device according to claim 1, for use in combination with a fluoroscopy monitor (M) having a laterally deflecting swing arm (S) on which the monitor is secured, and suspended in rolling suspension from said track system, wherein the rotary suspension support includes a swinging arm (14) secured to the dolly or carriage (12), the length of the swinging arm (14) being approximately matched to the laterally deflecting swing arm (S) of the monitor.
Claim 9
Dependent Claim
22 words
Radiation protection device according to claim 1, wherein the suspension means suspending the apron from the clothes hanger-like suspension are longitudinally adjustable.
Claim 10
Dependent Claim
110 words
Radiation protection device according to claim 1, wherein the spring has a carrying force which is approximately matched to the weight of the apron (20); the track system (10) includes a pair of U-tracks, secured to the ceiling to face each other with the open portion of the U facing each other, one leg of the U of each one of the tracks being positioned adjacent the ceiling of the room; wherein the dolly or carriage (12) comprises an elongated plate (22) having wheels (21) laterally fitting into the open U-tracks and engaged therein; and wherein the suspension means suspending the apron from the clothes hanger-like suspension are longitudinally adjustable.
Claim 11
Dependent Claim
76 words
Radiation protection device according to claim 9, for use in combination with a fluoroscopy monitor (M) having a laterally deflecting swing arm (S) on which the monitor is secured, and separately suspended in rolling suspension from said track system, wherein the rotary suspension support includes a swinging arm (14) secured to the dolly or carriage (12), the length of the swinging arm (14) being approximately matched to the laterally deflecting swing arm (S) of the monitor.
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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |