Recoil absorbing mechanism

Patent metadata

Field	Value
Publication number	US-9506728-B2
Application number	US-201414450869-A
Country	US
Kind code	B2
Filing date	Aug 4, 2014
Priority date	Aug 4, 2014
Publication date	Nov 29, 2016
Grant date	Nov 29, 2016

Abstract

Systems ( 100 ) and methods ( 1200 ) for recoil absorption. The methods comprising: causing a moving carrier ( 102 ) to freely travel linearly in a first direction by discharging at least one recoil producing device ( 110 - 114 ); absorbing an impulse force resulting from discharging the recoil producing device using a spring ( 122, 124 ) having a first end coupled to the moving carrier and a second end ( 130 ) coupled to a fixed frame member ( 132 ); and applying a pulling force by the spring to the moving carrier in a second direction opposed from the first direction at an end of spring travel, whereby a uni-directional force transfer mechanism ( 610 ) is caused to engage an elongate latching element so as to latch the moving carrier in position and prevent the moving carrier from freely traveling in the second direction.

First claim

We claim:

1. A method for recoil assembly, comprising:
causing a moving carrier to freely travel linearly in a first direction by discharging at least one Recoil Producing Device (“RPD”);
absorbing an impulse force resulting from discharging said RPD using at least one spring having a first end coupled to said moving carrier and a second end coupled to a fixed frame member; and
applying a pulling force by said spring to said moving carrier in a second direction opposed from said first direction at an end of spring travel, whereby a uni-directional force transfer mechanism is caused to engage an elongate latching element so as to latch said moving carrier in position and prevent said moving carrier from freely traveling in said second direction.

2. The method according to claim 1 , wherein said spring comprises a constant force spring.

3. The method according to claim 1 , further comprising transmitting a constant force to a robot from said spring when said impulse force is being absorbed by said spring.

4. The method according to claim 1 , wherein said latching element comprises a threaded rod.

5. The method according to claim 1 , further comprising causing said moving carrier to travel linearly in said second direction by rotating said elongate latching element or pushing said elongate latching element in said second direction.

6. The method according to claim 1 , further comprising causing said moving carrier to travel linearly in said second direction by displacing said uni-directional force transfer mechanism along a length of said latching element.

7. The method according to claim 1 , wherein said uni-directional force transfer mechanism comprises a split nut attached to a rigid support structure via mechanical spring elements.

8. The method according to claim 1 , wherein said uni-directional force transfer mechanism comprises a plurality of flexible fins engaging threads or notches formed along a length of said elongate latching element.

9. The method according to claim 1 , wherein said moving carrier is mechanically coupled to said RPD.

10. The method according to claim 1 , further comprising sensing a position of said moving carrier along a length of said elongate latching element.

11. A recoil absorption assembly, comprising:
a fixed frame member;
an elongate latching element coupled to said fixed frame member;
a moving carrier coupled to said elongate latching element so as to be able to freely linearly slide along a length of said elongate latching element in a first direction when at least one Recoil Producing Device (“RPD”) is discharged;
at least one spring having a first end coupled to said moving carrier and a second end coupled to said fixed frame member, said spring absorbing an impulse force resulting from discharging said RPD; and
a uni-directional force transfer mechanism engaging said elongate latching element when a pulling force is applied by said spring to said moving carrier in a second direction opposed from said first direction at an end of spring travel, whereby said moving carrier in latched into position and prevented from freely traveling in said second direction.

12. The recoil absorption assembly according to claim 11 , wherein said spring comprises a constant force spring.

13. The recoil absorption assembly according to claim 11 , wherein a constant force is transmitted to a robot from said spring when said impulse force is being absorbed by said spring.

14. The recoil absorption assembly according to claim 11 , wherein said latching element comprises a threaded rod.

15. The recoil absorption assembly according to claim 11 , wherein said moving carrier is caused to travel linearly in said second direction by rotating said elongate latching element or pushing said elongate latching element in said second direction.

16. The recoil absorption assembly according to claim 11 , wherein said moving carrier is caused to travel linearly in said second direction by displacing said uni-directional force transfer mechanism along a length of said latching element.

17. The recoil absorption assembly according to claim 11 , wherein said uni-directional force transfer mechanism comprises a split nut attached to a rigid support structure via mechanical spring elements.

18. The recoil absorption assembly according to claim 11 , wherein said uni-directional force transfer mechanism comprises a plurality of flexible fins engaging threads or notches formed along a length of said elongate latching element.

19. The recoil absorption assembly according to claim 11 , wherein said moving carrier is mechanically coupled to said RPD.

20. The recoil absorption assembly according to claim 11 , further comprising at least one sensor sensing a position of said moving carrier along a length of said elongate latching element.

Assignees

• Harris Corp

Inventors

• Bosscher Paul M
• Summer Matthew D
• Bowman Michael E
• Wilkinson Loran J

Classifications

• F41B9/0046 Primary

  Disruptors, i.e. for neutralising explosive devices · CPC title

• F41A25/12

  using coil springs · CPC title

• F41A25/10

  Spring-operated systems · CPC title

• F41H11/12 Primary

  Means for clearing land minefields; Systems specially adapted for detection of landmines · CPC title