US PATENT SUBCLASS 72 / 159-- .~.~ And work-complementing gripper faces (e.g., contoured)

US PATENT SUBCLASS 72 / 159
.~.~ And work-complementing gripper faces (e.g., contoured)

Current as of: June, 1999
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72 /	HD	METAL DEFORMING

127	DF	BY DEFLECTING SUCCESSIVELY-PRESENTED PORTIONS OF WORK DURING BODILY MOVEMENT THEREOF (E.G., FOR COILING, LEVELLING, CURVING OR TROUGHING MATERIAL IN MOVEMENT) {11}
149	DF	.~ By use of work-contacting wiper and moving, work-holding form {9}
159		.~.~ And work-complementing gripper faces (e.g., contoured)

DEFINITION

Classification: 72/159

And work-complementing gripper faces (e.g., contoured):

(under subclass 149) Subject matter including work-holding elements on the form, said element having surfaces which are nonplanar and match or fit corresponding surfaces of the gripped portion of the workpiece.

(1) Note. The "work-holding elements" were described in the definition of subclass 149 in part (2) section (b) as means for temporarily securing the work to the form. In this subclass (159) are found disclosures of gripper elements for gripping threaded pipe, flared tubing, I-beams, or other objects having a contoured cross section.