Y10- TECHNICAL SUBJECTS COVERED BY FORMER USPC. Y- GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS AND DIGESTS. 238000006011 modification reaction Methods 0.000 description 2. 238000004519 manufacturing process Methods 0.000 description 2. 210000003414 Extremities Anatomy 0.000 abstract description 4. 210000001503 Joints Anatomy 0.000 title claims abstract description 28. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Mathis Michael S filed Critical Mathis Michael S Priority to US07/052,918 priority Critical patent/US4790789A/en Application granted granted Critical Publication of US4790789A publication Critical patent/US4790789A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links Mathis Original Assignee Mathis Michael S Priority date (The priority date 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 - Fee Related Application number US07/052,918 Inventor Michael S. Movable joints pdf#
Google Patents Toy figure having adjustably movable jointsĭownload PDF Info Publication number US4790789A US4790789A US07/052,918 US5291887A US4790789A US 4790789 A US4790789 A US 4790789A US 5291887 A US5291887 A US 5291887A US 4790789 A US4790789 A US 4790789A Authority US United States Prior art keywords control means ball toy movement control joints Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4790789A - Toy figure having adjustably movable joints These are the joints present at the ankles,wrist and between vertebrae.US4790789A - Toy figure having adjustably movable joints These types of joints provide little movement in all directions.
Gliding joints: This is a joint which allows bones to glide over each other. Examples of a hinge joint are the elbow joint and the knee joint. 
This is a joint which can be compared to that of a hinge in the door. It provides back and forth movement of the structure.
Hinge joint: This is a joint which moves like a hinge in a single plane not more than 180 degrees. Example is the joint which joins the neck to the head. It rotates over the pivot-like end of the other bone. Pivot joint: This is the joint in which one bone fits into a ring formed by the other bone. Examples of a ball and socket joint are shoulder joints and hip joints. This joint provides movement in any direction. 
It fits into a cup-like depression of the other bone.
Ball and socket joint: This joint is formed by two bones in which one end of a bone is rounded and ball-like. Four immovable joints present in our body are Ball and socket joint, Pivot joint, hinge joint and the gliding joint. 
Freely movable joints are the joints which solely help in the movement of the structure or organ in which they are present.
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