1. Field of the Invention
This invention relates to a restraint system. More particularly, the present invention relates to a restraint system having two independent release mechanisms
2. Description of the Background Art
Restraint systems are known in the art. Restraint systems, such as conventional seat belts, include a length of webbing that secure an occupant within a vehicle. Other restraint systems include a occupant worn vest or harness that releasably attaches to the webbing. The length of webbing, in turn, can be secured to either a fixed anchor point within the vehicle or to an inertial reel. Such restraint systems can be used in a wide variety of vehicles, such as land, sea, or spaced based vehicles.
If a reel is employed, it can be positioned above (or to the side of) the user so that the webbing can be dispensed to facilitate occupant movement within the vehicle. An accelerometer within the reel can lock the webbing to secure the occupant in the event of sudden or severe movements, accidents, crashes, or rapid acceleration or deceleration, or any other event that would warrant the occupant being immediately restrained (i.e. a “triggering event”). By locking the reel in response to a triggering event, the occupant is protected again injury and/or being ejected from the vehicle.
An example of an overhead restraint system is described in commonly owned U.S. Pat. No. 7,275,710 to Van Druff et al. Van Druff discloses an aircrew restraint system that includes a track and a trolley that runs along the track. The trolley includes an interlock pin that cooperates with interlock hooks spaced within the track. A webbing strap connects an aircrew harness to a strap retractor. In order for the occupant to release the trolley, they must grasp an overhead handle.
Regardless of the type of restraint system employed, whether an overhead restraint, fixed anchor point, or otherwise, a mechanism is needed for quickly and easily uncoupling the occupant. Although it is important to adequately restrain an occupant during a triggering event, it is similarly important to allow the occupant to be released upon the conclusion of the triggering event. Uncoupling an occupant from the restraint may be especially important in the event of a crash or water landing. These emergency situations require the restrained individual to immediately separate himself or herself from the restraint system to prevent serious bodily injury or death. This task is complicated by the fact that the webbing may be secured to the back of the occupant via a harness. The occupant may also have been incapacitated as a result of the triggering event, thereby making it impossible for the occupant to release himself or herself. The restraint system of the present disclosure is aimed at overcoming these and other problems.
The disclosed restraint system presents several important advantages over prior systems. One possible advantage is attained by providing two separate and independent mechanisms for releasing an occupant from an associated restraint system.
A further possible advantage is achieved by allowing a restrained occupant to be quickly and easily released following a triggering event.
Another possible advantage is realized by providing a means for allowing an occupant to selectively free themselves from an associated restraint when needed in either emergency or non-emergency situations.
Still yet another advantage is attained by providing a means for automatically releasing an occupant from a restraint in the presence of water.
A further advantage is recognized by incorporating both a manual release mechanism and an automatic release mechanism in a single occupant restraint.
Various embodiments of the invention may have none, some, or all of these advantages. Other technical advantages of the present invention will be readily apparent to one skilled in the art.
The foregoing has outlined some of the pertinent objects of the invention. These objects should be construed to be merely illustrative of some of the more prominent features and applications of the intended invention. Many other beneficial results can be attained by applying the disclosed invention in a different manner or modifying the invention within the scope of the disclosure.
For a fuller understanding of the nature and objects of the invention, reference should be had to the following detailed description taken in connection with the accompanying drawings in which:
Similar reference characters refer to similar parts throughout the several views of the drawings.
The present invention relates to a restraint system for a vehicle. A crewmember or occupant is interconnected to the restraint system by way of a strap. The strap has two separate and independently operable release mechanisms. The strap permits the occupant to be either manually or automatically released from the associated restraint. The restraint can be mounted within any of a variety of land, sea, air, or space based vehicles. In one non-limiting embodiment, the first release mechanism is automatically activated in response to a triggering event and the second release mechanism is manually activated by the occupant pulling on a lanyard.
With reference to
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In one embodiment, release system 28 is the water activated release triggering mechanism disclosed in U.S. Pat. No. 6,930,611 to Van Druff et. al. The '611 patent and the present application are commonly owned. The specification of the '611 patent is incorporated herein for all purposes. Release system 28 includes an internal circuit with both an activated and a deactivated state. The activated state is achieved when the circuit is immersed in water. As long as the circuit remains dry and not immersed in water, it is maintained in the deactivated state and strap 22 remains coupled to the restraint system.
Release system 28 includes a housing 32 that is releasably connected to a D-Ring 34. Release system 28 further includes a mounting bar 38 that extends between two upstanding arms. Mounting bar 28 is positioned within a loop formed at the first end 24 of strap 22. D-ring 34, in turn, is used in securing release system 28 to the occupant. For example, D-ring 34 can be secured to either the front side or the back side of an occupant worn vest (note
It is within the scope of the present disclosure to utilize other types of release systems 28 that are responsive to other types of triggering events. For instance, system 28 may include a sensor that is responsive to extreme heat to release the occupant in response to a fire. Release system 28 may also be triggered in response to controls that are operable by other occupants of the vehicle.
A hook 42, which may be a spinnaker-type hook, is secured to the second end 26 of strap 22. Hook 42 includes a base potion 44 with a loop that is adapted to be permanently secured to second end 26 of strap 22. Hook 42 further includes a trigger 46 that permits a pivotal extent 48 to be released and opened. Pivotal extent 48, in the depicted embodiment, takes the form of a J-shaped hook. A cable 52 and a lanyard 54 are coupled to trigger 46 to allow manual actuation. More specifically, as cable 52 and lanyard 54 are pulled, trigger 46 is activated. This retracts a spring biased plunger 56 from an opening in pivotal extent 48. This, in turn, allows pivotal extent 48 to pivot open.
With reference to
As noted in
In either embodiment, once the occupant is properly secured, in the event the vehicle becomes submerged, release system 28 is activated to release D-ring 34. Once D-Ring 34 is uncoupled, the crewmember is released from the restraint system and is free to exit the vehicle. In the alternative, the crewmember is free to grasp lanyard 54 or cable 52 to open hook 42 and thereby free himself or herself from the restraint system. Again, the crew member is then free to exit the vehicle.
The present disclosure includes that contained in the appended claims, as well as that of the foregoing description. Although this invention has been described in its preferred form with a certain degree of particularity, it is understood that the present disclosure of the preferred form has been made only by way of example and that numerous changes in the details of construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention.
This application claims priority to and is a continuation of Application Ser. No. 61/505,817 entitled “Crewmember Strap with Dual Release Mechanisms” filed on Jul. 8, 2011. The contents of this co-pending application are fully incorporated herein for all purposes.
Number | Date | Country | |
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61505817 | Jul 2011 | US |