Workpiece holder with a multi-piece bladder
First Claim
1. A workpiece holding apparatus comprising:
- a body;
a bladder carried by said body, where said bladder and said body at least partially define a fluid chamber therebetween for containing a fluid therein, said bladder comprising;
at least one first polymer-containing section composed of a first polymer-containing material;
at least one second polymer-containing section disposed adjacent an end of said first polymer-containing section and composed of a second polymer-containing material that is less flexible than said first polymer-containing material; and
a sleeve carried by said bladder;
wherein said at least one first polymer-containing section of said bladder is constructed to engage said sleeve upon said fluid in said fluid chamber being pressurized.
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Accused Products
Abstract
A workpiece holding apparatus comprises a body, a bladder carried by the body, and a sleeve that is carried by the bladder. A fluid chamber is at least partially defined by the body and the bladder for containing a fluid therein. The bladder comprises at least one first polymer-containing section composed of a first polymer-containing material and is adapted to radially deflect the sleeve into engagement with the workpiece. The bladder further comprises at least one second polymer-containing section disposed adjacent to the first polymer-containing section(s) and is composed of a second polymer-containing material that is less flexible than the first polymer-containing material and where at least a portion of the second polymer-containing section(s) are constructed to engage elastomeric seals of the body of the workpiece holding apparatus to thereby seal pressurized fluid within the fluid chamber.
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Citations
19 Claims
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1. A workpiece holding apparatus comprising:
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a body; a bladder carried by said body, where said bladder and said body at least partially define a fluid chamber therebetween for containing a fluid therein, said bladder comprising; at least one first polymer-containing section composed of a first polymer-containing material; at least one second polymer-containing section disposed adjacent an end of said first polymer-containing section and composed of a second polymer-containing material that is less flexible than said first polymer-containing material; and a sleeve carried by said bladder; wherein said at least one first polymer-containing section of said bladder is constructed to engage said sleeve upon said fluid in said fluid chamber being pressurized. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A workpiece holding apparatus comprising:
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a body; a multiple piece bladder carried by said body, where said multiple piece bladder and said body at least partially define a fluid chamber therebetween for containing a fluid therein, said bladder comprising; a first polymer-containing piece composed of a first polymer-containing material; and second and third polymer-containing pieces each disposed on a respective opposed end of said first polymer piece, said second and third polymer pieces being composed of a material that is less flexible than said at least one first polymer-containing piece; and a sleeve carried by said multiple piece bladder; wherein said first polymer-containing piece of said multiple piece bladder is constructed to engage said sleeve upon said fluid in said fluid chamber being pressurized. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification