Back to results
US 4,474,046 AGranted
Rod bender
AssigneeZimmer, Inc.
InventorEverett J. Cook
Life of this patent
Estimating the term…
Abstract
An instrument for bending and/or contouring a rod. The device has a fulcrum for bending which has a plurality of separate bending surfaces, each of which can be rotated into operating position to accommodate different sizes of rods or to provide for different severities of bend.
Claims7
An instrument for bending a rod comprising:
- a pair of pivotable elongaged opposing lever arms;
- a pivot interconnecting said lever arms intermediate their lengths so as to be pivotable thereabout, said pivot dividing said arms into a handle portion for opening and closing said arms and a bending portion operable by said handle portion;
- and
- a three-post bending assembly mounted on said bending portion, said assembly including a single center post mounted on said pivot and having a plurality of selectively lockable bending surfaces circumferentially spaced around the peripheral surface of said single center post for contacting a portion of the rod, and a pair of outer posts, one mounted on each of said arms and pivotable therewith, said center post being positioned relative to said pair of outer posts so as to define a channel therebetween for receiving said rod when said arms are open, said outer posts forcing said rod to bend about a selected bending surface when said arms are forcibly closed, said selected bending surface determining in part the shape of said bend.
1 more element
An instrument for bending a rod comprising:
- a pair of pivotable engaged opposing lever arms;
- a pivot interconnecting said lever arms intermediate their lengths so as to be pivotable thereabout, said pivot substantially dividing said arms into a handle portion for opening and closing said arms and a bending portion operable by said handle portion;
- and
- a three-post bending assembly mounted on said bending portion, said assembly including a single center post mounted on said pivot and having a plurality of selectively lockable bending surfaces circumferentially spaced around the peripheral surface of said single center post for contacting a portion of the rod, and a pair of outer posts, one mounted on each of said arms and pivotable therewith, said center post being positioned relative to said pair of outer posts so as to define a channel therebetween for receiving said rod when said arms are in one position, said outer posts forcing said rod to bend about a selected bending surface when said arms are forcibly rotated about said pivot point to a second position, said selected bending surface determining in part the shape of said bend.
1 more element
Dependencies are inferred from the claim text.