US3755920A - Leg for a test dummy - Google Patents

Leg for a test dummy Download PDF

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Publication number
US3755920A
US3755920A US00261538*7A US3755920DA US3755920A US 3755920 A US3755920 A US 3755920A US 3755920D A US3755920D A US 3755920DA US 3755920 A US3755920 A US 3755920A
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US
United States
Prior art keywords
leg
simulated
bone
secured
upper leg
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US00261538*7A
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English (en)
Inventor
J Smrcka
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ALDERSON RES LAB
ALDERSON RES LABOR INC US
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ALDERSON RES LAB
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Publication date
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
    • G09B23/28—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for medicine
    • G09B23/30—Anatomical models
    • G09B23/32—Anatomical models with moving parts

Definitions

  • ABSTRACT There is disclosed a leg for a test dummy which has a range of motion about the knee joint similar to that of the human and greater than the motion range of prior art legs. This is achieved by offsetting the simulated bone of the lower leg and molding a compressible cavity into the calf portion of the leg.
  • the knee includes an impact housing connected directly to the upper leg bone structure so that knee impacts are not transmitted through the joint.
  • This invention relates to test dummies of the type utilized in aviation and automotive crash research. More particularly, it relates to a leg construction for such dummies which permits expanded motion about the knee joint and allows knee impact loads to be transmitted directly to the femur rather than through the knee joint.
  • a leg for a test dummy which includes an upper leg member, a lower leg member, and a knee joint there-between.
  • the lower leg member includes a simulated leg bone having a resilient covering which simulates flesh.
  • the covering defines a compressible cavity in the calf portion.
  • FIG. 1 is a top view of a leg constructed in accordance with this invention
  • FIG. 2 is a cross section taken substantially along the line 2-2 of FIG. 1;
  • FIG. 3 is a partial cross section of the leg of this invention shown in its flexed configuration
  • FIG. 4 is an enlarged cross section taken substantially along the line 4--4 of FIG. 2.
  • FIGS. 1 and 2 there is illustrated a leg in accordance with this invention comprising an upper leg assembly 10, a knee assembly 12, and a lower leg 14.
  • the upper leg assembly comprises a metallic tube 16 having a slot 18 at its end.
  • a link rod 20 having reduced diameter ends has one of those ends inserted into tube 16 where it is secured by a socket head cap screw 22.
  • the other end of link rod 20 is inserted in a socket 24 defined by a cast metal impact housing 26 which forms one element of the knee assembly 12.
  • the end of the link rod 20 is secured to the housing 26 by means of a second cap screw 28.
  • Simulated flesh is provided by upper 30 and lower 32 segments of vinyl skin and foam which are provided with suitable passages 34, 36 for access to the screws.
  • the housing 26 of the knee assembly 12 is essentially cylindrical, describing a smooth surface of revolution 38 covered with solid vinyl skin 40.
  • One side of housing 26 defines a semicircular aperture 42.
  • the remaining portion of the knee assembly 12 comprises a pair of spaced bars 44 positioned on opposite sides of housing 26 and pivotable about a shaft 46.
  • the internal construction of the knee joint forms :no part of this invention and, accordingly, is not illustrated. However, it may be of the type disclosed in a co-pending application of Samuel W. Alderson entitled Variable Friction Hinge Ser. No. 155,811, filed June 23, 1971 and assigned to the same assignee as the present invention.
  • a screw 48 carried by one of the bars 44 is positioned to traverse the aperture 42 to provide a limit stop at its two extremes.
  • the lower leg 14 is secured to the knee assembly 12 by means of a plate 50 which is welded between the bars 44.
  • the plate 50 is shaped as shown in FIG. 4 so as to be offset toward the front of the leg.
  • Welded to this offset portion of plate 50 is one end of a metal tube 52 which forms the simulated lower leg bone.
  • the lower leg flesh is simulated by vinyl skin and foam 54. This flesh differs from prior art constructions in that the calf portion defines a cavity 56 which occupies a portion of the space left free by the forward positioning of the tube 52.
  • the lower leg 14 terminates in an ankle joint 58 which forms no part of the present invention and, accordingly, need not be further described.
  • the extended range of motion provided by the leg of this invention will be best appreciated by reference to FIGS. 3 and 4.
  • the cavity 56 may be compressed by contact of the flesh 54 with the flesh of the thigh. This results in the lower leg being rotatable through an arc of which exceeds the mo tion available in prior art devices and closely approximates that of the human leg.
  • the housing 26 is a strong cast impact member connected directly to the upper leg.
  • any impact loads on the knee will be transmitted directly to the link rod 20 thereby avoiding damage to the knee hinge and permitting more accurate load measurements.
  • a leg for a test dummy which comprises: an upper leg member; a knee joint secured to the upper leg member; and a lower leg member secured to said knee joint including a simulated lower leg bone having a resilient covering simulating flesh, said covering defining a compressible cavity in the calf portion.
  • leg of claim 1 wherein said simulated lower leg bone is offset forwardly from a line extending between the center of rotation of the knee joint and the ankle.
  • leg of claim 1 wherein said knee joint comprises: an impact housing secured to said upper leg member and having a substantially cylindrical surface of revolution adjacent said lower leg member; first and second bars pivotally secured to opposite'sides of said housing to rotate about the axis of revolution; and a plate member secured between said bars and to said lower leg bone.
  • said upper leg member comprises: a tube forming a portion of a simulated upper leg bone; a link rod forming another portion of the simulated upper leg bone; means for detechably securing one end of said link rod to said tube; and means for detachably securing the other end of said link rod to said knee joint.
  • leg of claim 5 wherein said upper leg member further comprises: first and second simulated leg flesh segments abutting intermediate said securing means.
  • a leg for a test dummy which comprises: an upper leg member; an impact housing secured to said upper leg member and having a substantially cylindrical surface of revolution; first and second bars pivotally secured to opposite sides of said housing to rotate about the axis of revolution; and a lower leg member secured to said first and second bars for rotation adjacent said surface of revolution.
  • said upper leg member comprises: a tube forming a portion of a simulated upper leg bone; a link rod forming another portion of the simulated upper leg bone; means for detachably securing one end of said link rod to said tube; and means for detachably securing the other end of said link rod to said impact housing.
  • said lower leg member comprises a simulated lower leg bone offset forwardly from a line extending between the axis of rotation of said bars and the ankle.
  • leg of claim 9 wherein said lower leg member comprises a resilient covering simulating flesh, said covering defining a compressible cavity in the calf portron.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Physics (AREA)
  • Medicinal Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Algebra (AREA)
  • Computational Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Optimization (AREA)
  • Medical Informatics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • Theoretical Computer Science (AREA)
  • Instructional Devices (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
US00261538*7A 1972-06-09 1972-06-09 Leg for a test dummy Expired - Lifetime US3755920A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US26153872A 1972-06-09 1972-06-09

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US3755920A true US3755920A (en) 1973-09-04

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US00261538*7A Expired - Lifetime US3755920A (en) 1972-06-09 1972-06-09 Leg for a test dummy

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US (1) US3755920A (Direct)
JP (1) JPS524370B2 (Direct)
GB (2) GB1370086A (Direct)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000564A (en) * 1976-01-07 1977-01-04 The United States Of America As Represented By The Secretary Of The Department Of Transportation Programmable anthropomorphic articulation
US4235025A (en) * 1979-07-26 1980-11-25 General Motors Corporation Knee joint for anthropomorphic dummy
US4261113A (en) * 1979-08-31 1981-04-14 Humanetics, Inc. Anthropomorphic dummy for use in vehicle crash testing
US4276032A (en) * 1980-06-20 1981-06-30 Woley Paul F Knee joint for anthropomorphic dummy
US4850877A (en) * 1987-01-20 1989-07-25 Donjoy, Inc. Method of determining stress effects in components of the human knee and anthropomorphic leg device therefor
US5018977A (en) * 1989-04-21 1991-05-28 Dynamic Research, Inc. Motorcycle accident simulating test dummy
US20090215016A1 (en) * 2004-07-30 2009-08-27 Hansjoerg Wesp Device for the determination of parameters particularly for therapeutic compression means on limbs
WO2014039510A1 (en) * 2012-09-05 2014-03-13 Nike International Ltd. Method of impact testing using mount assembly with deformable member
US8997579B2 (en) 2012-09-05 2015-04-07 Nike, Inc. Mount assembly for compression testing of protective articles of apparel
US9050514B1 (en) * 2015-01-05 2015-06-09 Abdullah Ayman Abd Alrasoul Mirza Martial arts training dummy
WO2020049415A1 (en) * 2018-09-05 2020-03-12 Ethicon, Inc. Systems, devices and methods for testing substrates to evaluate wound closure products
CN112393914A (zh) * 2019-08-13 2021-02-23 惠曼创新解决方案公司 用于将仿真骨盆肌肉耦接到拟人化测试设备的骨盆组合件的骨盆支撑结构的耦接设计
US20210350726A1 (en) * 2018-09-21 2021-11-11 Humanetics Innovative Solutions, Inc. Coupling Design For Abdomen Flesh Of Anthropomorphic Test Device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS602209B2 (ja) * 1979-07-27 1985-01-19 日産自動車株式会社 シ−トバツクヒンジ

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557471A (en) * 1968-09-16 1971-01-26 Wyle Laboratories Anthropodynamic dummy

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3557471A (en) * 1968-09-16 1971-01-26 Wyle Laboratories Anthropodynamic dummy

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4000564A (en) * 1976-01-07 1977-01-04 The United States Of America As Represented By The Secretary Of The Department Of Transportation Programmable anthropomorphic articulation
US4235025A (en) * 1979-07-26 1980-11-25 General Motors Corporation Knee joint for anthropomorphic dummy
US4261113A (en) * 1979-08-31 1981-04-14 Humanetics, Inc. Anthropomorphic dummy for use in vehicle crash testing
US4276032A (en) * 1980-06-20 1981-06-30 Woley Paul F Knee joint for anthropomorphic dummy
US4850877A (en) * 1987-01-20 1989-07-25 Donjoy, Inc. Method of determining stress effects in components of the human knee and anthropomorphic leg device therefor
US5018977A (en) * 1989-04-21 1991-05-28 Dynamic Research, Inc. Motorcycle accident simulating test dummy
US20090215016A1 (en) * 2004-07-30 2009-08-27 Hansjoerg Wesp Device for the determination of parameters particularly for therapeutic compression means on limbs
US8419437B2 (en) * 2004-07-30 2013-04-16 Paul Hartmann Ag Device for the determination of parameters particularly for therapeutic compression means on limbs
WO2014039510A1 (en) * 2012-09-05 2014-03-13 Nike International Ltd. Method of impact testing using mount assembly with deformable member
US8997579B2 (en) 2012-09-05 2015-04-07 Nike, Inc. Mount assembly for compression testing of protective articles of apparel
US9080931B2 (en) 2012-09-05 2015-07-14 Nike, Inc. Method of impact testing using mount assembly with deformable member
US9625362B2 (en) 2012-09-05 2017-04-18 Nike, Inc. Method of impact testing using mount assembly with deformable member
US9050514B1 (en) * 2015-01-05 2015-06-09 Abdullah Ayman Abd Alrasoul Mirza Martial arts training dummy
WO2020049415A1 (en) * 2018-09-05 2020-03-12 Ethicon, Inc. Systems, devices and methods for testing substrates to evaluate wound closure products
US11054343B2 (en) 2018-09-05 2021-07-06 Ethicon, Inc. Systems, devices and methods for testing substrates to evaluate wound closure products
US20210350726A1 (en) * 2018-09-21 2021-11-11 Humanetics Innovative Solutions, Inc. Coupling Design For Abdomen Flesh Of Anthropomorphic Test Device
US12266274B2 (en) * 2018-09-21 2025-04-01 Humanetics Innovative Solutions, Inc. Coupling design for abdomen flesh of anthropomorphic test device
CN112393914A (zh) * 2019-08-13 2021-02-23 惠曼创新解决方案公司 用于将仿真骨盆肌肉耦接到拟人化测试设备的骨盆组合件的骨盆支撑结构的耦接设计
US11885713B2 (en) * 2019-08-13 2024-01-30 Humanetics Innovative Solutions, Inc. Coupling design for coupling simulated flesh to a support structure of an anthropomorphic test device

Also Published As

Publication number Publication date
GB1370086A (en) 1974-10-09
JPS524370B2 (Direct) 1977-02-03
GB1370085A (en) 1974-10-09
JPS4933651A (Direct) 1974-03-28

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