DAVID K HART
Engineering in Rosemont, PA
License number
Massachusetts 19257
Expiration Date
Jun 30, 1984
Type
Mechanical Engineer
Address
Address
Rosemont, PA 19010
Organization information
See more information about DAVID K HART at bizstanding.comDavid K. Hart Co
127 Browning Ln, Bryn Mawr, PA 19010
Phone:
(215) 527-0388 (Phone)
Email:
SIC:
1629 - Heavy Construction, Not Elsewhere Classified
David K Hart Co
9 Meadowood Rd, Bryn Mawr, PA 19010
Industry:
Mechanical or Industrial Engineering, Other Commercial & Svc Machinery Mfg
Site:
Phone:
(610) 527-0388 (Phone), (610) 527-4298 (Fax)
Description:
The Recognized Experts in Today's Rotary Die Cutting Solutions.
Owner:
Jim Riley (Owner)
SIC:
3599 - Industrial and Commercial Machinery and Equipment, Not Elsewhere Classified
Company size:
1
Professional information
Hole Punch Mount For Split Rotary Die Punches
US Patent:
5842401, Dec 1, 1998
Filed:
Dec 13, 1996
Appl. No.:
8/764953
Inventors:
David K. Hart - Rosemont PA
Assignee:
David K. Hart Company - Rosemont PA
International Classification:
B26D 726, B26F 114
US Classification:
8369851
Abstract:
A punch assembly is provided for a rotary forms press, for punching holes in a sheet of paper or other material as the material travels between punch and die assemblies. The punch assembly is of the split ring type, and has a hub to be carried on a punch shaft and driven thereby. A split punch ring of multiple segments is provided, for mounting on the hub, with the segments being connected together. The punches are carried by the punch ring. There is a slip fit between the punch ring and the hub to allow movement between the punch ring and hub to accommodate minor repositioning of the punch ring and its punches as the punches enter holes of dies with which they will engage, with the slip fit allowing either rotary repositioning or axial repositioning. Clearance is provided to an enable a limited amount of axial repositioning.