Vacuum gripper

• US 3,147,017 A
• Filed: 09/05/1962
• Issued: 09/01/1964
• Est. Priority Date: 09/05/1962
• Status: Expired due to Term

• Current Assignee: Russell H. Dunham
• Original Assignee: Russell H. Dunham
• Inventors: Dunham, Russell H.
• Application Number:
  US04/221,585
• Time in Patent Office: 727 Days
• US Class Current: 279/3
• CPC Class Codes: B23B 31/307 Vacuum chucks
• CPC Class Codes: B25B 11/005 Vacuum work holders
• CPC Class Codes: Y10T 279/11 Vacuum

Claims

1. A WORK HOLDING APPARATUS FOR HOLDING IN A FIXED RELATION TO A REFERENCE SURFACE AN OBJECT HAVING AN ANNULAR, INTERNAL SURFACE COMPRISING, (A) A GRIPPER BODY ASSOCIATED WITH SAID REFERENCE SURFACE AND HAVING A GENERALLY ANNULAR EXTERNAL SURFACE ADAPTED TO MATE WITH THE INTERNAL SURFACE OF A WORKPIECE TO BE HELD, (B) SAID GRIPPER BODY DEFINING AT LEAST ONE CIRCUMFERENTIAL GROOVE AT THE EXTERNAL SURFACE THEREOF, (C) VACUUM ACTUATED PISTON MEANS, (D) PASSAGE MEANS CONNECTING SAID GROOVE AND SAID PISTON MEANS TO A SOURCE OF VACUUM, (E) MECHANICAL MEANS MOVABLE RELATIVE TO SAID GRIPPER BODY AND ACTUABLE BY SAID PISTON MEANS TO EXERT HOLDING FORCES ON A WORKPIECE PLACED OVER SAID GRIPPER BODY,