# US 7,744,329 B2 · Automatic release system

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- Number: US 7,744,329 B2
- Document ID: US7744329B2
- Status: Granted
- Kind: B2
- Application number: 11/365,692
- Filed: 2006-03-02
- Published: 2009-05-07
- Granted: 2010-06-29
- Earliest claimed: 2005-03-02
- Assignees: Her Majesty the Queen in Right of Canada as Represented by the Solicitor General of Canada
- Inventors: Joseph Michel Donald Chenel
- Web page: https://patentgrep.com/patent/US7744329B2

## CPC

- B25J 18/025: {telescopic}
- B25J 11/0025: {handling explosives, bombs or hazardous objects}
- F41H 11/28: using brushing or sweeping means or dozers to push mines lying on a surface aside; using means for removing mines intact from a surface
- Y10T 24/316: Strap connector
- Y10T 24/3922: Cord runs through center of coil
- Y10T 292/1082: Motor
- B25J: MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES ({manipulators specially adapted for use in surgery A61B34/70; manipulators used in cleaning hollow articles B08B9/04}; manipulators associated with rolling mills B21B39/20; manipulators associated with forging machines B21J13/10; {manipulators associated with picking-up and placing mechanisms B23P19/007}; means for holding wheels or parts thereof B60B30/00; {vehicles with ground-engaging propulsion means, e.g. walking members B62D57/02, B62D57/032; devices for picking-up and depositing articles or materials between conveyors B65G47/90, B65G47/91; manipulators with gripping or holding means for transferring packages B65H67/065}; cranes B66C; {manipulators used in the protection or supervision of pipe-line installations F17D5/00; walking equipment adapted for nuclear steam-generators F22B37/006}; manipulators specially adapted for, or associated with, nuclear reactors G21C; {apparatus used for handling wafers during manufacture or treatment of semiconductor H10P72/50})
- F41H: ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A release mechanism for use with an explosives disposal robot having an elongated boom includes a latch member secured to an outer end of the boom, the latch member having a fixed portion and movable latch or lever members. A flexible strap extends between the lever members, with one end being attached to one of the lever members and the other end being releasably attached to the other lever member. When the other lever member is moved to a release position the other end of the strap falls from the other lever member so as to release, for example, a firing line cradled in the strap. The one lever member can be actuated by way of a remote controlled solenoid connected thereto via a flexible cable or by way of an elastic member connected thereto. The elastic member is particularly useful when the elongated boom is telescopic in nature, as the latch member will be secured to one of the boom members and one end of the elastic member will be connected to another of the boom members with the other end of the elastic member being connected to the one lever member. When there is telescopic extension movement between the boom members the elastic member will act on the one lever member to cause it to move so as to release the strap from the other lever member.

## Claims

### Claim 1

An explosive disposal robot comprising:
motive means for moving said robot along a desired route;
manipulator means mounted to said robot for performing one or more desired tasks, said manipulator means including at least an elongated boom member having a free outer end thereof by which one or more explosive charges are carried;
a firing line connected to each of said explosive charges; and
a release mechanism for use in positioning said firing lines, comprising;
a latch member for connection to said elongated boom member adjacent the free outer end thereof, said latch member including a fixed portion and first and second latching portions, each of said first and second latching portions being movable between latching and release positions;
an elongated strap member connected at one end thereof to said first latching portion of said latch member;
means for releasably connecting the other end of said strap member to said second latching portion of said latch member;
wherein said means for releasably connecting is normally retained at said latch member by said latching portions being in the latching position thereof; and
wherein a length of each of said firing lines is disposed about the strap member when said other end of said strap is connected to said second latching portion;
actuator means secured to said boom member; and
connection means connecting said actuator means to said first latching portion;
wherein operation of said actuator means moves said first and second latching portions to their release position to thus release said other end of said strap member from said second latching portion and to thereby release said length of each of said firing lines disposed on said strap member.

### Claim 2 (depends on 1)

The explosives disposal robot of claim 1 wherein said actuator means comprises an electrically operable solenoid having a retractable plunger therein and said connection means comprises a flexible cable connecting said plunger to said first latching portion of said latch member.

### Claim 3 (depends on 2)

The explosives disposal robot of claim 2 wherein: said fixed portion of said latch member includes a generally U-shaped housing affixed to said elongated boom member; said first latching portion of said latch member includes a first lever member pivotally mounted to said housing and being connected with said flexible cable; said second latching portion includes a second lever member co-operating with said housing for retention of said other end of said strap member in said latching position; and means connected between said first lever member and said second lever member for moving said second lever member to the release position thereof.

### Claim 4 (depends on 3)

The explosives disposal robot of claim 3 including a ring member secured to said other end of said strap member for retention between said second lever member and said housing of said latch member.