Quick-loosening mechanical linking device
View Patent ↗A quick-loosening mechanical linking device that includes housing, a release cavity having a predetermined height, a bolt, and an actuator. The bolt is disposed within the housing and includes an attachment means projecting out from the housing, a release zone such as an intended failure zone, and a head with a piston face. Upon actuation of the actuator, the bolt deforms and/or fails at the release zone and the attachment means moves farther out from the housing by a distance equal to the height of the release cavity. The release cavity preferably includes an abutment formed at its bottom, and the actuator is preferably an electric initiator having a pyrotechnic charge.
1. A quick-loosening mechanical linking device, comprising;
a) a housing;
b) a release cavity having a predetermined height and a bottom, and including an abutment at said bottom;
c) a bolt disposed within said housing and having an attachment means projecting out from said housing, an intended failure zone, and a head with a piston face; and,
d) an actuator for selectively providing a pressure within said device adequate to cause said bolt to move farther out from said housing by a distance equal to said predetermined height of said release cavity;
wherein said bolt is a single unitary piece.
2. The device of claim 1 , wherein said intended failure zone is annular, conical, or cylindrical.
3. The device at claim 1 , wherein said housing comprises a lower half and an upper half securely engaged with said lower half.
4. The device of claim 1 , wherein said housing includes a rotary tool engagement means.
5. The device of claim 3 , wherein said attachment means includes threads.
6. The device of claim 1 , wherein said actuator is an electrical actuator and has an output end directed at said piston face.
7. The device of claim 6 , further comprising a retainer, wherein said electrical actuator includes electrical connectors extending centrally through said retainer.
8. The device of claim 6 , wherein said electrical actuator includes a pyrotechnic charge, the output force of which is matched to the dimensions and material of said intended failure zone so as to ensure failure of said intended failure zone upon actuation of said electrical actuator.
9. The device of claim 8 , wherein said housing includes a rotary tool engagement means and said attachment means includes threads.
10. The device of claim 1 , wherein said abutment is formed into said housing.
11. The device of claim 10 , wherein said bolt includes a flared portion and said intended failure zone is between said head of said bolt and said flared portion of said bolt, and wherein said intended failure zone is annular.
12. The device of claim 1 , wherein said abutment is formed into said bolt, and said bolt further includes a narrowed central portion between said abutment and said head of said bolt.
13. The device of claim 12 , wherein said housing includes a BOBS beneath said abutment, and said intended failure zone is cylindrical or conical.
14. The device of claim 1 , wherein said abutment is formed into said housing.
15. The device of claim 14 , wherein said bolt includes a flared portion and said intended failure zone is between said head of said bolt and said flared portion of said bolt.
16. The device of claim 1 , wherein said abutment is formed into said bolt, and said bolt further includes a narrowed central portion between said abutment and said head of said bolt.
17. The device of claim 16 , wherein said housing includes a boss beneath said abutment.
18. A quick-loosening mechanical linking device, comprising:
a) a housing;
b) a release cavity having a predetermined height;
c) an abutment at the bottom of said release cavity;
d) a bolt disposed within said housing and having an attachment means projecting out from said housing, a release zone, a head with a piston face, and a narrowed central portion between said head and said abutment, wherein said abutment is formed into said bolt; and
e) an actuator for selectively providing a pressure within said device adequate to cause said bolt to move farther out from said housing by a distance equal to said predetermined height of said release cavity.