Radiation shield

• US 4,581,538 A
• Filed: 09/30/1983
• Issued: 04/08/1986
• Est. Priority Date: 09/30/1983
• Status: Expired due to Fees

• Current Assignee: Colonial X-Ray Corp.
• Original Assignee: Colonial X-Ray Corp.
• Inventors: Lenhart, Mark J.
• Primary Examiner(s): Anderson, Bruce C.
• Application Number:
  US06/537,986
• Time in Patent Office: 921 Days
• Field of Search: 250/515.1, 250/519.1
• US Class Current: 250/519.1
• CPC Class Codes: G21F 3/00 Shielding characterised by its physical form, e.g. granules, or shape of the material

Abstract

A shield for protecting a person from radiation being used to irradiate a work area, while permitting the person to observe and to have access to the work area, including a radiation-shielding observation window, and a flexible, mechanically penetrable radiation-shielding curtain adjacent the window.

Claims

1. A shield for protecting personnel from radiation being used to irradiate a work area while permitting observation and access to the work area, said shield comprising:

a supporting frame;

a connector for connecting said frame to an overhead suspension system for supporting said shield above said work area;

a radiation-shielding observation window connected to and extending below said frame said window sized and shaped to enclose the space between the source of said radiation and said work area on least three sides;

a radiation-shielding curtain suspended at one end adjacent and below said window about at least said three sides, said curtain comprising a plurality of overlapping flexible radiation shielding flaps adapted for mechanical penetration and adapted to conform to the contour of the work area; and

said shield having height above at least said three sides such that with said curtain at the surface of said work area, said window extends at least as high as the point at which radiation emanates from said source and above the height of personnel outside said enclosed space.

2. The shield of claim 1 sized and shaped to permit at least two people simultaneously to observe and have access to the work area.

3. The shield of claim 2 wherein said window and curtain are U-shaped.

4. The shield of claim 3 wherein said window comprises a lead-impregnated, transparent acrylic copolymer resin sheet.

5. The shield of claim 4 wherein said sheet has a lead equivalency of 0.50 millimeters.

6. The shield of claim 1 wherein said supporting frame further comprises a handle for controlling the position of said shield, said handle being accessible from any location about said shield.

7. The shield of claim 1 wherein said connector comprises means for enabling said shield to have any selected orientation with respect to said work area.

8. The shield of claim 1 wherein said window comprises a lead-impregnated, transparent acrylic copolymer resin sheet.

9. The shield of claim 1 wherein said sheet has a lead equivalency of 0.50 millimeters.

10. The shield of claim 1 wherein said curtain comprises a double layer of lead-vinyl sheeting, each layer having a lead equivalency of 0.50 millimeters.