US3895451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Breakable leg
Assignee: ALDERSON RESEARCH LAB Inc
•
Filing: 1973-10-09
•
Granted: 1975-07-22
•
Expires: 1993-10-09
Abstract
Abstract A leg for a medical training dummy comprising a metallic simulated leg bone around which is molded an integral skin foam. The leg bone member includes a hinge for simulating a broken leg. Skinning of the foam against the hinge surface is prevented by wrapping the hinge with a relatively soft foam prior to casting. The hinge includes detents for holding the leg in either its broken or unbroken state.
Inventors
- 👤 Joseph G Smrcka
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:46
CPC Classifications
G; G09; G09B; G09B23/00; G09B23/28; G09B23/30; G09B23/32; A; A63; A63H; A63H3/00; A63H3/003; Y; Y10; Y10S; Y10S264/00; Y10S264/14
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
64 words
A limb for a training dummy which comprises: first and second structural members simulating a bone in said limb; a hinge joining said structural members at a location where a joint normally does not exist; a non-skinning foam wrapped around said hinge; and integral skin foam simulated flesh enveloping said structural members, hinge, and non-skinning foam and having exterior contours resembling a human limb.
Claim 2
Dependent Claim
64 words
A limb for a training dummy which comprises: first and second structural members simulating a bone in said limb; a hinge joining said structural members at a location where a joint normally does not exist; a non-skinning foam wrapped around said hinge; and integral skin foam simulated flesh enveloping said structural members, hinge, and non-skinning foam and having exterior contours resembling a human limb.
Claim 3
Dependent Claim
25 words
The limb of claim 1 wherein said simulated flesh defines an external recess adjacent said hinge for permitting flexure of said limb at said hinge.
Claim 4
Dependent Claim
23 words
The limb of claim 1 wherein said hinGe comprises means for holding said hinge in a broken position and in an unbroken position.
Claim 5
Dependent Claim
12 words
The limb of claim 3 wherein said holding means comprises a detent.
Claim 6
Dependent Claim
38 words
The limb of claim 3 wherein said detent comprises: a ball in said first structural member; and a recess defined by said second structural member positioned to receive said ball when said hinge is in an unbroken position.
Claim 7
Dependent Claim
22 words
The limb of claim 5 wherein said hinge includes means for resiliently retaining said first and second structural members in hinged relationship.
Claim 8
Dependent Claim
36 words
The limb of claim 6 wherein said hinge comprises: a hinge pin passing through said first and second structural members; and a resilient member compressively held against one of said structural members by said hinge pin.
References Cited (Backward Citations)
US2359425A
Cited
US2781611A
Cited
US3027655A
Cited
US3557471A
Cited
US3642965A
Cited
US3628282A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-21 | 1979-01-20 | 1979-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-21 | 1983-01-20 | 1983-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-21 | 1987-01-20 | 1987-07-22 | $7700.00 | Window Closed / Lapsed |