Apparatus for tightening threaded fasteners
A link attachment 100 for use with a device 300 for effecting an intermittent turning force 360 which oscillates in a forward and a backward direction 361 and 371 for tightening or loosening a fastener including: —a link housing 115 ; a link drive input 131 operatively connectable with device 300 ; a link drive lever 102 operatively connected with link drive input 131 ; a link drive plate 101 operatively connected to link drive lever 102 at a pivot point 125 by a link drive pin 105 ; a link ratcheting mechanism 103 operatively connected to link drive lever 102 by a drive pawl 104 ; a link attachment drive output 130 operatively connected with link ratcheting mechanism 103 and operatively connectable with the fastener; and link attachment 100 being operatively connectable to device 300 to provide intermittent turning force 360 to turn the fastener. Advantageously link attachment 100 : is operatively connectable to device 300 either by itself or via a drive extension 200 ; limits the need for movable components in device 100 ; engages inaccessible fasteners; and magnifies and transfers intermittent turning force 360 to the fastener.
1. An apparatus for tightening or loosening a fastener including:—
a device 300 for effecting an intermittent turning force 360 which oscillates in a forward and a backward direction 361 and 371 ;
a link attachment 100 operatively connectable to device 300 providing intermittent turning force 360 to turn the fastener; and
a drive extension 200 operatively connectable with device 300 and link attachment 100 .
2. An apparatus according to claim 1 wherein link attachment 100 includes:—
a link housing 115 ;
a link drive input 131 operatively connectable with device 300 ;
a link drive lever 102 operatively connected with link drive input 131 ;
a link drive plate 101 operatively connected to link drive lever 102 at a pivot point 125 by a link drive pin 105 ;
a link ratcheting mechanism 103 operatively connected to link drive lever 102 by a drive pawl 104 ;
a link attachment drive output 130 operatively connected with a link ratcheting mechanism 103 and operatively connectable with the fastener.
3. An apparatus according to claim 2 wherein link drive input 131 oscillates forward and backward thereby advancing link drive output 130 in one direction via link ratcheting mechanism 103 .
4. An apparatus according to claim 2 wherein link attachment 100 includes a link upper housing portion 106 which corresponds to tightening of the fastener and a link lower housing portion 107 which corresponds to loosening of the fastener.
5. An apparatus according to claim 1 wherein device 300 includes:—
a device housing 301 ;
a device piston assembly 315 ;
a device drive pawl assembly 338 operatively connected with piston assembly 315 ;
a device drive plate assembly 339 operatively connected with drive pawl assembly 338 ;
a device ratchet assembly 340 operatively connected with drive plate assembly 339 ;
a device drive output assembly 330 ; and
a device reaction support assembly 333 .
6. An apparatus according to claim 1 wherein drive extension 200 includes:—
an extension outer reaction assembly 201 operatively connectable with device reaction support assembly 333 , extension outer reaction assembly 201 having an extension base plate 203 with extension reaction pins 220 and 221 ;
an extension drive input assembly 231 operatively connectable with device drive output assembly 330 ;
an extension inner drive assembly 202 operatively connected with extension drive input assembly 231 ; and
an extension drive output assembly 230 .
7. An apparatus according to claim 1 wherein link attachment 100 includes link reaction force holes 120 and 121 for extension reaction pins 220 and 221 .
8. An apparatus according to claim 1 wherein device 300 does not include a device reaction pawl assembly 341 which allows operative portions of device 300 to oscillate forward and backward.
9. An apparatus according to claim 1 wherein device 300 provides coaxial action and reaction turning forces 360 and 361 in opposite directions 370 and 371 at substantially equal torque.
10. An apparatus according to claim 1 wherein link attachment 100 includes means for abutting against a nearby stationary object to prevent torque power tool 300 from turning around the fastener.
11. An apparatus according to claim 1 wherein link attachment 100 magnifies action turning force 360 .
12. An apparatus according to claim 1 wherein device reaction turning force 361 , which tries to tilt link attachment 100 , is overcome by link action and reaction forces 160 and 161 , which are superior and also perpendicular to device action and reaction turning forces 360 and 361 , so that link attachment 100 remains in line with the fastener and a nearby stationary object.
13. An apparatus according to claim 1 wherein link attachment 100 is connectable to and disconnectable from device 300 as a unit.
14. A link attachment 100 for use with a device 300 for effecting an intermittent turning force 360 which oscillates in a forward and a backward direction 361 and 371 for tightening or loosening a fastener including:—
a link housing 115 ;
a link drive input 131 operatively connectable with device 300 ;
a link drive lever 102 operatively connected with link drive input 131 ;
a link drive plate 101 operatively connected to link drive lever 102 at a pivot point 125 by a link drive pin 105 ;
a link ratcheting mechanism 103 operatively connected to link drive lever 102 by a drive pawl 104 ;
a link attachment drive output 130 operatively connected with link ratcheting mechanism 103 and operatively connectable with the fastener;
link attachment 100 being operatively connectable to device 300 to provide intermittent turning force 360 to turn the fastener; and
a drive extension 200 operatively connectable with device 300 and link attachment 100 .
15. A link attachment according to claim 14 wherein device 300 includes:—
a device housing 301 ;
a device piston assembly 315 ;
a device drive pawl assembly 338 operatively connected with piston assembly 315 ;
a device drive plate assembly 339 operatively connected with drive pawl assembly 338 ;
a device ratchet assembly 340 operatively connected with drive plate assembly 339 ;
a device drive output assembly 330 ; and
a device reaction support assembly 333 .
16. A link attachment according to claim 14 wherein drive extension 200 includes:—
an extension outer reaction assembly 201 operatively connectable with device reaction support assembly 333 , extension outer reaction assembly 201 having an extension base plate 203 with extension reaction pins 220 and 221 ;
an extension drive input assembly 231 operatively connectable with device drive output assembly 330 ;
an extension inner drive assembly 202 operatively connected with extension drive input 231 assembly; and
an extension drive output assembly 230 .
17. A link attachment according to claim 14 wherein link attachment 100 includes link reaction force holes 120 and 121 for extension reaction pins 220 and 221 .
18. A link attachment according to claim 14 wherein device 300 does not include a drive reaction pawl assembly 341 which allows operative portions of device 300 to oscillate forward and backward.
19. A link attachment according to claim 14 wherein link drive input 131 oscillates forward and backward thereby advancing link drive output 130 in one direction via link ratcheting mechanism 103 .
20. A link attachment according to claim 14 wherein link attachment 100 includes a link upper housing portion 106 which corresponds to tightening of the fastener and a link lower housing portion 107 which corresponds to loosening of the fastener.
21. A link attachment according to claim 14 wherein device 300 provides coaxial action and reaction turning forces 360 and 361 in opposite directions 370 and 371 at substantially equal torque.
22. A link attachment according to claim 14 wherein link attachment 100 includes means for abutting against a nearby stationary object to prevent torque power tool 300 from turning around the fastener.
23. A link attachment according to claim 14 wherein link attachment 100 magnifies action turning force 360 ).
24. A link attachment according to claim 14 wherein device reaction turning force 361 , which tries to tilt link attachment 100 , is overcome by link action and reaction forces 160 and 161 , which are superior and also perpendicular to device action and reaction turning forces 360 and 361 , so that link attachment 100 remains in line with the fastener and a nearby stationary object.
25. A link attachment according to claim 14 wherein link attachment 100 is connectable to and disconnectable from device 300 as a unit.
26. A link attachment according to claim 14 wherein drive plate 101 sits on a spring loaded seat 126 .