Tensioning apparatus

• US 3,285,568 A
• Filed: 03/17/1965
• Issued: 11/15/1966
• Est. Priority Date: 03/17/1965
• Status: Expired due to Term

• Current Assignee: John L. Biach
• Original Assignee: John L. Biach
• Inventors: Biach, John L.
• Application Number:
  US04/440,386
• Time in Patent Office: 608 Days
• US Class Current: 254/29.00A
• CPC Class Codes: B25B 29/02 Bolt tensioners
• CPC Class Codes: F16B 31/043 Prestressed connections tensioned by means of liquid, grease, rubber, explosive charge, or the like hydraulic bolt tensioners B25B29/02
• CPC Class Codes: F16B 43/007 in two or more parts

Claims

1. A STUD TENSIONING SYSTEM COMPRISING:

A BOLT;

TENSIONER ENGAGING MEANS ON SAID BOLT FOR COOPERATING WITH A TENSIONING APPARATUS FOR TENSIONING THE BOLT;

A BOLT TENSIONING APPARATUS INCLUDING A HOUSING HAVING ONE END ADAPTED TO THRUST AGAINST THE SURFACE FROM WHICH THE BOLT AND TENSIONER ENGAGING MEANS EXTENDS, A PULLER BAR HAVING AN END WITHIN SAID HOUSING, THE PULLER BAR END AND THE TENSIONER ENGAGING MEANS HAVING COOPERATING AND RELEASABLE INTERENGAGING SURFACES, AND TENSIONING MEANS COUPLED WITH THE PULLER ROD FOR TENSIONING THE BOLT BY MEANS OF THE TENSIONER ENGAGING MEANS;

AND MEANS FOR INTERPOSITION BETWEEN THE TENSIONER ENGAGING MEANS AND SAID SURFACE FOR MAINTAINING THE BOLT UNDER TENSION UPON DEACTIVATION OF THE TENSIONING MEANS AND RELEASE OF THE PULLER BAR FROM THE TENSIONER ENGAGING MEANS.