EASY EJECTOR SEAT AND INDO-SKELETAL CRASH SAFETY BEAM

Abstract: A passenger vehicle is provided with an Indo-Skeletal structure (1, 2, 3) for providing protection for passengers in side impacts comprised of an internal frame (1, 2, 3). The seating arrangement includes an "Easy Ejector" seat structure (4) permitting lateral sliding of seats to positions outside of the vehicle body for safety issues as well as assisted passenger access.

Description: EASY EJECTOR SEAT AND INDO-SKELETAL CRASH SAFETY BEAM APPLICANT Name: Dr. Arjuna Indraeswaran Rajasingham. Address: 6024 Bradley Boulevard Bethesda MD 20817 Telephone: 301 229 0218 SPECIFICATION TITLE Easy Ejector Seat and Indo-Skeletal Crash Safety Beam CROSS REFERENCE TO RELATED APPLICATIONS Not Applicable STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT Not Applicable REFERENCE TO A MICRO FICHE APPENDIX Not Applicable BACKGROUND OF INVENTION In the past safety of passengers was not always the priority in passenger vehicle design. In the evolution of motor vehicle design the structure moved from a chassis that held together the mechanical components of the vehicle - a structure that was then attached to a passenger compartment or to passenger seats. The design of the structure was to hold together the working components of the vehicle - a critical aspect at the time. Thereafter in more recent times right up to the present, Exo-skeletal designs have been the dominant paradigm. Here "Shells" were constructed to hold both the mechanical components and the passengers. Over the last several years however, the safety considerations for passengers has become of paramount importance. Vehicle designers -- particularly automobile designers - have risen admirably to the task by incorporating myriads of devices and additions within the Shell paradigm to minimize risk in the event of collisions. Such devices include restraints such as seat belts and protective air bags. However, there are limits within the Shell paradigm. Inherently, Shell structures require high shear or bending strength to withstand compressive loads on impact resulting in a need for higher mass or weight of the vehicle. This in turn reflects on cost and the energy efficiency of the vehicle. These factors often result in compromises on the structural rigidity of the Shell. The first Claim provides a design structure for motor vehicles to address this problem. A related issue is that of passenger comfort in the evolution of passenger vehicles that have evolved from animal drawn carriages . In the history of motor vehicle design there has always been a requirement for passengers to climb into the vehicle to get to the travelling or operating position. This may be difficult particularly for the elderly and the disabled, and for infants and small children (who need to be installed in special protective car seats) . The second claim provides a new paradigm for passenger vehicles that allows passengers to mount and dismount easily with ejectors. Moreover this invention emphasizes the synergies that are drawn from these shifts in structural design embodied in the two independent claims and provides a preferred embodiment that illustrates the application. SUMMARY OF INVENTION This application seeks a Patent for an invention of a new passenger vehicle structural design with two related independent claims. The first of these claims is for the Indo-Skeletal structure for passenger motor vehicle design whose principal design feature is to provide protection to passengers in side or lateral impacts in collisions using an internal frame rather than a "shell" structure. The second independent claim is the "Easy Ejector" seat structure for motor vehicles that provides utilitarian and safety related value in passenger access to vehicles. While motor vehicle movement can be controlled in the forward and backward directions there is little or no control of motor vehicle movement in the lateral direction. Therefore while sophisticated vehicle speed controls and other innovations may .be designed to protect passengers in head on or tail end collisions, passengers are very vulnerable in lateral collisions. This invention addresses this need while concurrently providing a structural design for easy access to the vehicle for passengers. Several dependant claims further qualify the independent claims. Moreover in the discription section, a preferred embodiment is disclosed to synergistically embody the structural attributes of both the independent claims with several parts of the device playing dual roles in the embodiment thereby demonstrating the synergies in these related claims and the value of this invention. This invention for the first time transfers the focus of the structural design of passenger motor vehicles to the key interests of passengers - safety and comfort from designs that cater for this need secondary to the mechanical functioning of the vehicle. DRAWING DESCRIPTION The following figures describe the drawings attached in the Appendix. These drawings aid visualization of the inventions but are clearly not intended to provide an exhaustive set of embodiment of the invention. Figure 1A illustrates the structure in the first independent claim. The Tndoskeltal Frame is constituted by the Central members and possibly the floorboard of the vehicle (Items 1) . Lateral rigidity is provided by the Safety Beam elements that may or may not be a part of the slide mechanism (Items 2) . Impact protection is provided by the side impact shock absorbers (Items 3) which may include External Airbags (Items 4) which in turn may require perforation shields (Items 5) . The normal situation is depicted in the illustration I and the situation under impact is illustrated in II. Figure IB, illustrates the Easy Ejector with Indo-Skeletal Crash Safety Beam with the positioning of passengers. Here Item 1 represents the Protector shield and the external airbags. Item 2 represents the Shock Absorbers and the Slide Beam and Easy Ejector slide in the locked position. Item 3 is an auxiliary Safety Beam mounted on the Ejector Slide and locked into position with the Ejector Slide in the operating position. In other embodiments this Safety Beam can be a part of the fixed structure with the outside end of the beam engaging the Shock Absorbers and the Protector Shield. The Passenger seat is represented by Item 4 and the Central body frame represented by Item 5. Figure 1C illustrates the effect of impact on Figure IB. In the event of an impact that imposes accelerations that cannot be withstood by the human body despite the shock absorbers, the impact side seat decouples from the ejector slide (Items 5) , and the Ejector Slide and the Auxiliary Safety beam along with the Shock Absorber and the Protector Shield on the further side of the vehicle (Items 1 and 2) unlock and both the seats are free to eject to the extent necessary to avoid crushing injury. The bulk of the Impact is borne by the compressed shock absorbers, the Slide and Safety Beam Items 4, and the main body elements of the vehicle Items 3. Figure 2A illustrates the "Safety Zones" that the design of the vehicle will meet. These safety zones (Item 1) will target the profiles of the passengers. Other regions will have minimal protection to reduce vehicle weight. Figure 2B illustrates an embodiment of the seats. A side sectional view and a Plan view of the seat is provided with a safety harness that is unique to this invention. Items 1 represent the mounting brackets for the safety harness . The mount on the internal side may be hinged to open upwards while the mount on the external side may be locked in the operating position. It may also be installed on the fixed members of the vehicle so that the seat slides in under the harness and locks in place. Item 2 is the safety harness that may be of a semi rigid material that provides support for the entire upper body in a head on collision. Features of the seat may include contoured armrests (Item 3) and body cavity (Item 4) . Figure 3A is an isometric view of an embodiment of the invention. Figures 3 B&C, in the Appendix illustrates the sectional elevation the structural design of this invention in its preferred embodiment. The Body of the vehicle Item 1 and Item 2 is shown along with an embodiment of the device in schematic section both in the mounting position and the operating position. The "B" figure illustrates the device in the extended position. The "C" figure illustrates the operating position. In particular these figures illustrate the ejector mechanism that may be a slide structure Items 4 and 5 in Figures 3 B & C, on which is mounted the passenger seat - item 7 in figures 3 B & C. Item 3 represents the main structural member of the skeletal frame. Item 4 is the lower slide for the ejector seat - the Slide Beam, Item 5 is the upper slide of the ejector seat - The Ejector Slide. In the operating position these slide together and the Safety Beam 1 - Item 6, locks with the Skeletal Frame with the locking device - Items 13. The seat - Item 7 is contoured for comfort and will have all the movement and positioning capabilities of a conventional vehicle seat in the operating position. It is 1 Alternatively the Safety Beam can be a fixed member of the Skeletal Frame that locks into the Shock Absorber and the Protector Shield in the operating position. connected to cne Ejeccor Siida through l;upao αec upiers ±ZGΛS 8. These decouplers may in some embodiments be designed as secondary slides that when decoupled under impact, guide the seats and passengers out of the vehicle. The Shock Absorbers -Item 14 are fixed to the Ejector Slide and the Safety Beam on one side and the Protector Shield -Item 9. The External Air Bags are located between the Protector Shield and the Perforation Shield - Item 10 and are activated with the velocity detectors - Item 12. DETAILED DESCRIPTION OF THE INVENTION The Indo Skeletal Structure in the first claim of the invention is an innovation that pioneers a new paradigm in automobile and other passenger vehicle design using a safety driven "Indo-skeletal" (internal skeleton) frame rather than present day "exo-skeletal" or shell based bodies that are inherently weaker under compressive loads encountered in collisions. It is distinct from early period automobile design in that the skeletal structures are safety oriented rather than focussed on the mechanical functioning of the vehicle. It is notable that the Safety Endo-skeletal design captures the evolution in structural priorities in the more developed living organisms. The Easy Ejector claim - the second independent claim in the invention provides an ergonomically utilitarian, easy and comfortable approach to mount and dismount from motor vehicles. The passenger seats are ejected outside the body of the vehicle for ease of mounting and dismounting with slides or extension arms, and moved into the operating or travelling position when desired. Moreover in the event of a lateral collision it provides the mechanism to eject passengers if necessary to prevent crush injuries. The Easy Ejector is particularly suitable for automobiles and smaller passenger vehicles . Its utilitarian value in this regard is particularly notable for the elderly, the disabled, and infants . Notably, the two independent claims are related in that there are significant synergies in their combined embodiment. The use of the Easy Ejector paradigm along with the Indo-Skeletal Structure utilizing many of the structural elements for both purposes, provide utilitarian access to the motor vehicle and reduces the risk of injury to drivers and passengers in side impact collisions (lateral collisions) in all types of motor vehicles. While motor vehicle movement can be controlled in the forward and backward directions there is little or no control of motor vehicle movement in the lateral direction. Therefore while sophisticated vehicle speed controls and other innovations may be designed to protect passengers in head on or tail end collisions, passengers are very vulnerable in lateral collisions. This device addresses this need while providing easy access to the vehicle for passengers . The First Independent Claim (please refer to Figure 1A) provides a new paradigm for vehicle design structures - The Safety Indo-Skeletal structure or internal skeletal structure. Here the Internal structural members are designed principally for safety of the passengers, and together form a protective structure particularly tor lateral impact. ne design of the structure will transfer the impact in collisions directly through compressive members and compressive shock absorbers of the structure to the components of the vehicle with high mass, and thereby protect the passengers. The structure uses members that will be under compressive rather than under shear loads permitting the use of lighter material requirements to withstand the same forces as in conventional designs on impact. In many embodiments conventional shock absorbers and air bags will be used in conjunction with the rigid members in compression to absorb the energy of impact . In some embodiments the shock absorbers and air bags may be proactively fired (with strategically placed sensors) or reactive as in conventional designs. Overall this will provide greater safety for passengers for the same vehicle weight. The Safety Indo-Skeletal structure for passenger vehicle design identifies targeted "impact zones" (Please refer to Figure 2A) that could affect passengers and provides a path for transferring the energy of such encountered impact directly to the high mass components of the vehicle through compression bearing rigid and shock absorbing elements, thereby protecting the passengers from the impact and compressive loads of such collisions . Passengers while a part of the inertial mass of the vehicle are decoupled from the transfer of the energy to the remainder of the vehicle. The transfer of energy takes place through structural members under compressive load in the skeletal structure. In most embodiments the design will have shock absorbers placed at locations where impact affecting passengers is likely to occur. Shock absorbers in some embodiments may be proactive (with suitable lateral velocity and distance sensors) or reactive (as in conventional design) . The design of the structure targets safety of passengers in lateral or side impact collisions. The structure has the following characteristics: A. Targets potential impact zones in lateral or side collisions that could affect passenger safety. (As in Figure 2A ) B. Incorporates a skeletal structure that provides compressive load bearing members both rigid and shock absorbing that protect the impact zones identified in the above paragraph. (See Figure 1 A,B) C. Achieve a structurally minimal ( in weight (design to achieve the safety goals of the last paragraph, thereby minimizing vehicle mass possibly with lower weight body shell materials. Structural rigidity achieved by the inherent design of components that bear compressive loads, rather than shell structures that bear shear or bending loads. This can result in lighter weight materials in construction resulting in potentially lower cost and energy consumption of the vehicle. The second independent Claim provides a new paradigm for access to motor vehicles. The customary approach for mounting and dismounting contemporary motor vehicles is by entering a door and then easing ones self into a seat that is fixed ( such seats may allow limited forward and backward adjustments but no significant lateral movement) . This Invention - The Easy Ejector, slides or extends the seat out of the vehicle allowing the passenger (s) to sit comfortably in the seat and then be moved into the travelling or operating position, automatically or with minimal manual effort. The reverse process is followed to dismount from the vehicle. The structure permits the design of passenger seats that provide support on all sides of the passenger (including the exit side) . This is not available in contemporary motor vehicles. Moreover this facilitates provision of rigid protective sides to the seat that will protect the passenger in a collision. The door of the vehicle may or may not be a part of the integrated device or structure. Many dependant claims are presented in this invention that further specify possible embodiments of the invention. The following description of an embodiment provides the utilitarian properties of the two independent claims - the Easy Ejector ( in Independent Claim 2) , along with the safety attributes of the Safety Indo-Skeletal structure (in Independent Claim 1) and the features presented in several of the Dependant Claims . Deviations from this description in an embodiment is possible without deviating from the invention. The device includes Shock absorbers at the outer extreme of each Ejector Beam coupled with the rigid structure of the Easy Ejector Beam Slide (locked with the chassis when the vehicle is in motion) . The outer face of the shock absorber (Protector shield) will cover a great part of the passenger side profile and may even extend as a (fixed or retractable) "Safety Cage" over the passenger. In some embodiments of the invention this Protector Shield may be hinged to exit the vehicle if desired without using the ejector mechanism. The seat is mounted on the Easy Ejector Beam Slide with mechanical decoupling in the event of impact. This slide also provides the Indo-Skeletal member that protects the passenger. This dual role reduces required mass of the vehicle to perform these functions. The function of the vehicle door will in most embodiments be reduced to a "Perforation Shield" ( as noted below) , its cosmetic value in the design of the vehicle, and its weather protection attributes. Lateral velocity and distance detectors may be mounted on the Perforation shield (and the Safety shield) to detect possible side collisions to activate external airbags Such airbags may be mounted between the safety shield and the Perforation shield. As the Easy Ejector provides protection by withstanding compressive loads through the Ejector Slide, the Slide Beam and the Auxiliary Safety Beam, rather than provide protection through resistance to a shear load as m shell structures m conventional car bodies, lightweight materials may be used as a substitute for the strength members in the vehicle design. The following is a detailed description of some of the components of this embodiment . The Slide Beam The Slide Beam has the dual characteristics of providing a utilitarian approach for mounting and dismounting motor vehicles, and providing protection in side impact or lateral collisions because of its strength under compression. The Slide Beam supports the ejector Slide which has freedom in lateral motion. Easy Ejector Slide and Auxiliary Safety Beam The slide provides the lateral movement for the seat at the time of mounting and dismounting from the vehicle. It may be used in conjunction with ball bearing or roller mechanisms. In addition in the locked position it provides the dual function of side impact protection. This protection is enhanced with an Auxiliary Safety Beam 2 which is mounted on the Ejector Slide possibly behind the passenger seat, In the operating position, it is locked to the frame as is the Slide. Easy Ejector Seat Comfort features The Easy ejector seat will have all the movement and cushioning features of conventional vehicle seats . However in addition it may be contoured to provide integrated lumbar and side support on both sides of the body - a feature that is not possible in conventional seats as free access on the door side is required m such designs. In conventional designs the door surface provides the only support on the external side surface which are usually limited to arm rests. The lower cost embodiments may have only the lower seat with the lumbar side supports ejecting, whereas more expensive embodiments may have the entire seat ejecting. 2 As noted earlier the Safety Beam may also be a fixed element of the Skeletal Structure that is locked to the shock absorbers and the protector shield in the operating position The "Custom contoured seats" customized for each passenger may be created with surround inserts to cradle the entire lower body in the ejector seat. Similarly child seats may be designed to protect children (see below) . Changes in this structure may be made without departing from the invention. Safety features of the seat Mechanical decoupling The seat will be mechanically decoupled from the Easy Ejector Slide for impact protection. While the decoupled seat will remain rigidly supported by the locked slide under normal operation conditions significant shocks - normally unsustainable by the human body -- will decouple the slide from the seat to allow the slide to convey the impact energy to the main structural members of the vehicle while allowing the seats independent movement that could result in ejection on the further side of the vehicle (away from the impact) . The seat decouplers may be designed as secondary slides on the Ejector Slide. Safety Harness The easy Ejector may have conventional seat belts or a safety harness that locks over the lap after mounting. This can be manually locked in place with a hinged structure that locks over the lap or may be part of the fixed anchor of the Easy ejector such that the seat positions itself under and locks into the harness. The harness may be constructed of pliable but semirigid material (such as high strength nylon) to provide support in a head on collision. Easy Ejector Slide Support For larger vehicles where there is more than one seat on a slide, and there is a longer movement required outside the vehicle, the door of the vehicle may be rear hinged and provide support for the slide. Side clearance for single seat Easy ejector The clearance on the side of the vehicle for the Easy Ejector in the extended position will usually be in the range of about 20 inches to 30 inches. This could be substantially less than the clearance required for opening a conventional car door. This is particularly useful for parking in areas with limited clearance. Easy Ejector Shock Absorber The shock absorber provides the energy absorbing capability between the inertial mass of the vehicle and the impacting body in a side collision. It may be mounted on the ejector slide with the external face locked to or fixed to he Protector shield (below) . In addition in the operating position the shock absorber will be locked to the sliding beam. Figure 3 B & C Items 13. Notably, the internal end of the ejector slide will be locked to the vehicle frame during operation. Easy Ejector Protector Shield This is the impact shield that is directly connected to the shock absorber. In most embodiments of the invention it will cover much of the side profile of the passenger. As an option the face of the Protector Shield may be hinged out to allow mounting the seat without extending or sliding out Easy Ejector for designs that use conventional doors. Easy Ejector Perforation shield This provides perforation protection from sharp objects in a collision both for the passenger and the external air bag (below) . It would in most embodiments of the invention be the vehicle door or the outer skin thereof. The Multiple Functions of the Vehicle Door As noted above, some embodiments of the invention may have several functions for the door. First as a Perforation shield for impact protection. Second as a support for the Easy Ejector Slide if necessary particularly for larger vehicles, third its conventional function to provide weather and environment protection, and finally as a mount for side impact velocity and distance detectors . To provide multiple functions the door may have double skins particularly for the Perforation shield function and the Slide Support Function. The Door may be designed to provide support for the Easy Ejector Slide particularly for larger vehicles with multiple seats on each Easy Ejector Slide. A rear hinge will avoid obstruction to the passenger at the time of mounting and dismounting from the vehicle. The door may function as Mount for Side impact velocity detectors. This safety feature provides early warning to deploy the side impact external air bags. The door will have lateral velocity and distance detectors (possibly infrared) to detect lateral velocity at close proximity to fire external airbags from the Protector Shield to protect the vehicle and the passengers . Easy Ejector Skeletal Lock Mechanical coupling with Vehicle Most embodiments of the invention will have a firm mechanical coupling of the Ejector Slide with the main structural frame of the vehicle during operation of the vehicle. This locks into the chassis and the high mass components of the vehicle to transfer the energy of impact. Jgnition lock The vehicle while in operation should have the Safety Beam and the Ejector Slide retracted and locked. The ignition lock may be used in some embodiments of the invention to ensure this practice. Safety Cage In some embodiments of the invention, the easy ejector Protector Shield may have a fixed or retractable "Safety Cage" structure that surrounds the passenger in a vertical plane, thereby protecting the passenger in a roll over situation. The Safety Cage may be simply a retractable roll bar. Internal side impact airbags Some embodiments of the invention may have internal side impact airbags that "unfurl" upwards on impact thereby protecting the passenger's body. Child seats Attachment. An easy insert into the seat will be secure for seating infants and small children securely and safely. The Safety harness may also have an attachment for providing greater support for infants and small children. PREFERRED EMBODIMENT OF CLAIMS: This embodiment benefits from synergies of using the two independent claims of this invention together. Numerous variations on this embodiment are possible without deviating from the invention. Current passenger motor vehicles use hinged doors for entry and exit for passengers and separate laterally fixed seats (no side to side movement) within the motor vehicle passenger compartment for the passengers while travelling in the vehicle. Moreover such motor vehicles do not usually have design focussed on lateral impact safety devices besides the impact protection of the side door and possibly internal side impact air bags. This embodiment of the invention - the Ejector and Crash Safety Beam -- provides the dual role of an Easy Ejector device (as defined in Independent Claim 2) with the Safety Indo- Skeletal Structure (as defined in Independent Claim 1) that provides utilitarian access to passenger vehicles and provides Safety characteristics using the Indo-Skeletal structure as noted herein. The elements of this embodiment are as follows: 1.1. The Slide Beam and the Easy Ejector Slide The Slide Beam - Item 4 in Figures 3, serves the dual role of both a structural member that provides compressive strength and also the support for the Easy Ejector Slide. The Easy Ejector Slide - Item 5 in Figures 3 B and C, sides over the Slide beam and in the operating position is locked to the main body of the vehicle Item 3 in Figures 3 B and C. In this position it provides structural strength under compression as well. The Easy Ejector Slide supports the seat (Item 7 in Figures 3 B and C) through mounts (Items 8 in Figures 3) that decouple at the time of impact. A secondary sliding design of the decoupler facilitates sliding of the seat over the Ejector Slide. In some embodiments, the Slide Beam/Easy Ejector Slide combination may have multiple elements with multiple sets of slides and/or roller mounts . In some embodiments the Slide Beam/Easy Ejector Slide combination may have several elements that collapse together in the Operating position. 1.2. The Easy Ejector Seat The Easy Ejector Seat for the passenger - Item 7 in Figures 3 B and C, is firmly mounted through decouplers (Items 8 in Figure 3 B and C) to the Easy Ejector Slide. At the time of impact the decouplers will disengage the seat to permit limited lateral movement or sliding on the Easy ejector Slide (away from the impact point) . In some variations, the Easy Ejector Seat may be designed to have multi directional movement and position adjustments for comfort as in conventional motor vehicle saats with mechanisms mounted on the decouplers . 1.3. Crush Prevention Seat frame The Easy Ejector seat In some embodiments may be constructed to have both sides of the seat reinforced to prevent crushing injuries to passengers in collisions. 1.4. The "Pop-Out Ejector" feature Some embodiments may have the "Pop-Out Ejector" feature that allows under impact on one side, the unlocking of the Easy Ejector Slide on the other side and the limited movement of the seats on the decouplers, to allow the seats to slide out to a limited extent, thereby preventing the entrapment of passengers in a collision and minimizing the maximum acceleration under impact that the passengers encounter. Moreover this feature will reduce the likelihood of the body of the vehicle under impact, crushing the passengers. 1.5. The Safety Beam Some embodiments may have the Safety Beam - Item 6 in Figures 3 B and C, a structural member that provides compressive strength. It is mounted on the Easy Ejector Slide and in the operating position locks into the frame of the vehicle (Item 3 in Figures 3 B and C) . The shock absorber (see below) is mounted at its outside end. 1.6. The shock absorber Some embodiments may have the Shock Absorber - Item 14 in Figures 3 B and C, which is mounted on the end of the Easy Slide Beam and the Safety Beam, and may support a Protector Shield. 1.7. The Protector Shield Some embodiments may have a Protector Shield - Item 9 in Figures 3 B and C, provides the cover for much of the side profile of the passenger to provide impact protection at different possible contact points on impact . 1.8. The External Airbag Some embodiments may have the External Airbag - Item 11 in Figures 3 B and C, that may be fired proactively with velocity/ distance sensors on the side of the vehicle. (Items 12 in Figure 3 B and C) These airbags will reduce the maximum acceleration of the passengers under impact. 1.9. The Perforation Shield Some embodiments may have the Perforation shield which is a thin skin that is on the outside of the vehicle protecting the external airbag from perforation and providing the cosmetic functions of the outside of the vehicle. Velocity/distance sensors may be mounted on these perforation shields. 1.10. The Skeletal Lock Some embodiments may have the Skeletal Locks - Items 13 in Figures 3 B and C, provide the locking mechanism for the Easy ejector Slide, the Safety 3eam and the Slide Beam. 1.11. Safety Cage Sone embodiments c.y have extensions of the protector Shield that extend over the passenger so that in the operating position these extensions engage a beam across the vehicle to prove further strength in a side impact . 1.12. Multi Element contour seat A unique characteristic of the Easy Ejector Structure in this invention is that there can be ergonomic passenger seat support on both sides of the lo er oody as veil as behind and belo , as in conventional seats I claim that the Multi -element contour seat may be customized to fit the lower Dody (either with manual inserts or with computer controlled elements that can be preset for each passenger) . In some embodiments such mull -element contour seats ma/ provide lateral support in addition to what conventional passenger seats provide This is of particular value m reducing driver fatigue on winding roads and rough terrain 1.13. Gravity Slide Drive (Manual Slide) S an alternative to an Electric power slide drive for the Easy Ejector, a Gravity Slide Drive may be used Either of these embodiments may be preferred depending on principally cost and weight factors The Gravity Slide Drive operates as follows The slide has two inclinations' - the "operating inclination" and the "loading inclination" The operating inclination has a slight incline upwards from the center of the vehicle. This is the incline of the slide that will DΘ locked into position during the operation of the vehicle The weight of the passenger will draw the passenger towards the operating position m the operating inclination despite the resistance of the "loader spring" to be defined below. The Loading inclination has a slight downward inclination so that the passenger's weight will slide out the seat and the slide to the extended position. There is a "Open" button, handle or other device on the inside and the outside of the vehicle for each passenger as in conventional motor vehicles. These will be referred to as the "Inside-Open" and the "Outside-Open" buttons Case ' ιtr> oasεenger in seat) From the operating position when the Inside-Open button is operated, the Slide moves and is locked to the Loading inclination and the seat sliαes out permitting the passenger to dismount At the time of dismounting the release of the of the passenger from the blxde laises and locks the Slide in the Operating Inclination »«hen the new passenger sits on 3 Note that the inclination refers to the slide mechanism that in some embodiments will be rollers It does not refer to the inclination of the Slide Beam or the Easy Ejector Slide These would normally be horizontal in the operating position to maximize the impact resistance the seat the body weight of this passenger slide the seat and the Slide to the Operating Position. IF there is no new passenger, the empty seat may be allowed to slide under gravity to the operating position. A spring mechanism will retard this motion so that while it is easy to slide in it is not automatic. Case B(With no passenger in seat) : To mount the seat, the passenger will operate the Outside-Open button. This will allow the slide to be drawn out assisted by the Spring mechanism. The Slide will be in the Operating Inclination during this movement, however the spring action will ease the movement of the slide to the extended position as there is no weight of a passenger in the seat to counter. Note that the Outside-Open button does not release the catch for the depression of the slide to the Mounting Inclination whereas the Inside- Open button does.

Claims: CLAIMS INDEPENDENT CLAIM 1 (CLAIM 1) : Current passenger vehicle construction uses a "Shell" or "Exo-skeletal" paradigm that provides limited protection to passengers in lateral collisions as a result of often inadequate rigidity and strength under shear or bending stress, whereas herein I claim that -- the Safety Indo-Skeletal Structure - provides better protection for passengers with economy of vehicle mass, with a structure that: 1. Targets "Impact Zones" relevant only to passenger safety in lateral or side collisions with structural elements under compression. Impact zones are defined to cover extensive parts of the side or lateral profile of passengers viewed from the outside of the vehicle. See Figure 2 A Item 1. 2. Uses compressive load bearing structural members that conduct the impact force and energy to the main inertial mass of the vehicle, thereby bypassing the passengers despite their physical location in close proximity to the impact location. 3. Decouples under sufficient impact forces, the passenger seat from the structural members bearing the impact forces thereby minimizing the maximum acceleration under impact sustained by the passengers and/or minimizing the likelihood of crushing injuries to such passengers. 4. Minimizes vehicle body weight by minimizing the vehicle body weight outside the said target Impact Zones. 5. Incorporates in some embodiments Active and/or Passive Shock Absorbers including possibly external airbags mounted on the external side of the structure defined herein to absorb the energy of impact and transfer the impact to the frame and main body of the vehicle. The Air Bags may be proactively fired with velocity and distance sensors mounted on the side of the vehicle in the event of a collision. INDEPENDENT CLAIM 2 (CLAIM 2) ; Current passenger vehicle design incorporates seats that do not permit lateral or side movement or rotation. Such a limitation makes mounting and dismounting from the vehicle difficult particularly for the elderly and for those installing infants in the vehicle in special safety seats. Moreover, in lateral collisions this limited mobility increases the likelihood of crushing injury, and provides no mechanism for limiting the body acceleration under impact independent of that sustained by the vehicle body. In this innovation I claim that -- the Easy Ejector --provides a structure that allows utilitarian and easy mounting and dismounting from passenger vehicles. Moreover, it provides an ejector mechanism that may be activated in the event of lateral collisions. In such situations this structure could prevent crushing injury and avoid unsustainable levels of acceleration of the human body. The Easy Ejector provides a structure that mounts one or more passenger seats on a lateral slide, extension or rotating mechanism that permits passengers to move their seats either manually or with automation from the operating position for driving or travelling position for passengers to the ejected position that is clear of but adjoining the body of the vehicle permitting easy mounting/dismounting by moving from the seated position to the standing position or vice versa. The passenger thereby mounts the vehicle by standing beside the vehicle and lowers him/her self into the seat, then retracts the Easy Ejector and is then in the driving or travelling position. Conversely to dismount the passenger or driver, Ejects the Easy Ejector and from a sitting position simply stands up beside the vehicle on the ground. This claim provides a new approach to avoid contortion of the body in mounting and dismounting passenger vehicles - a factor that is particularly useful for elderly and disabled passengers and drivers and for those that install infants in "Infant Car Seats" in such vehicles . In the event of a lateral collision, the Easy Ejector seats may be decoupled to allow the passenger seats to slide away from the collision, allowing the main thrust of the impact to be borne by the vehicle body and other components of the vehicle. DEPENDANT CLAIM 1 (CLAIM 3) : CRUSH RESISTANT SEAT FRAME τ h ° structure as in Claim 2 with the Easv Ejector neat constructed to have both sides of the seat reinforced to prevent crushing injuries to passengers in collisions. Conventional passenger seats do not have this facility as the entry side of the seat needs to be open for access . DEPENDANT CLAIM 2 (CLAIM 4) :THE "POP-OUT EJECTOR" FEATURE The structure as in Claim 2 with the "Pop-Out Ejector" feature that allows under impact on one side, the unlocking of the Easy Ejector Slide on the other side of the vehicle and the decoupling of the secondary slide/decoupler on the impact side to allow limited movement of the seats that allows them to slide out adequately to prevent the entrapment of passengers in a collision and minimizing the maximum acceleration under impact that the passengers encounter. Moreover this feature will reduce the likelihood of the body of the vehicle under impact, crushing the passengers. DEPENDANT CLAIM 3 (CLAIM 5) ;THE SAFETY BEAM The structure as in Claim 2 with the Safety Beam - Item 6 in Figures 3 B and C, a structural member that provides compressive strength. It is either mounted on the Easy Ejector Slide and in the operating position locks into the frame of the vehicle (Item 3 in Figures 3 B and C) with the shock absorber and Protector Shield fixed to it on the outside end, or is mounted on the fixed Skeletal Frame and is locked into the shock absorbers and the Protector Shield in the operating position. In some embodiments the Safety Beam may be mounted behind the passenger seat. DEPENDANT CLAIM 4 (CLAIM 6) : THE SHOCK ABSORBER The structure as in Claim 2 with the Shock Absorber - Item 14 in Figures 3 B and C, which is mounted on the end of the Ejector Slide and the Safety Beam, and may support a Protector Shield. DEPENDANT CLAIM 5 (CLAIM 7) ; THE PROTECTOR SHIELD The structure as in Claim 2 with a Protector Shield - Item 9 in Figures 3 B and C, provides the cover for much of the side profile of the passenger to provide impact protection at different possible contact points on impact. The said Protector Shield may in some embodiments be hinged to allow passengers to dismount without Ejecting the Easy Ejector mechanism. DEPENDANT CLAIM 6 (CLAIM 8) : THE EXTERNAL AIRBAG The structure as in Claim 2 with the External Airbag - Item 11 in Figures 3 B,C, that may be fired on/before impact. These airbags will reduce the maximum acceleration of the passengers (and the vehicle) under impact . DEPENDANT CLAIM 7 (CLAIM 9) ; PROACTIVE LATERAL IMPACT SENSORS The structure as in Claim 2 and Claim 8 with proactive velocity and distance sensors mounted on the side of the vehicle (Items 12 in Figure 3B,C), to sense impending impact to trigger the airbags in Claim 8. DEPENDANT CLAIM 8 (CLAIM 10) : THE PERFORATION SHIELD The structure as in Claim 2 with the Perforation shield - a thin skin that is on the outside of the vehicle protecting the external airbag from perforation and providing the cosmetic functions of the outside of the vehicle. Velocity/distance sensors may be mounted on these perforation shields . DEPENDANT CLAIM 9 (CLAIM 11) ; THE SKELETAL LOCK The structure as in Claim 2 with the Skeletal Locks - Items 13 in Figures 3 B and C, to provide the locking mechanism for the Ejector Slide, the Safety Beam and the Slide Beam and the other fixed members of the vehicle body. Some embodiments may use an "ignition lock" to avoid release of the skeletal lock while the vehicle is operational. Such a lock can be conditionally disabled to permit the implementation of Claim 4 if desired. DEPENDANT CLAIM 10 (CLAIM 12) : SAFETY CAGE The structure as in Claim 2 with extensions of the protector Shield that extend over the passenger so that in the operating position these extensions engage a beam across the top of the vehicle to provide further strength in a side impact. DEPENDANT CLAIM 11 (CLAIM 13) ; MULTI-ELEMENT CONTOUR SEAT The structure as in Claim 2 with a multi- element contour seat. A unique feature of the Easy Ejector structure in this invention is that there can be ergonomic passenger seat support on both sides of the lower body as well as behind and below as in conventional seats. The Multi-element contour seat may be customized to fit the lower body (either with manual inserts or with computer controlled elements that can be preset for each passenger) . In some embodiments such muli-element contour seats may provide lateral support in addition to what conventional passenger seats provide. This is of particular value in reducing driver fatigue on winding roads and rough terrain. DEPENDANT CLAIM 12 (CLAIM 14) :SEMI RIGID SAFETY HARNESS The structure as in Claim 2 with a Safety Harness for passengers. The Safety harness may be designed to lock over the lap after the passenger mounts. This can be manually locked in place with a hinged structure that locks over the lap or may be part of the fixed anchor of the Easy ejector such that the seat positions itself under and locks into the harness. The harness may in some embodiments be constructed of pliable but semi-rigid material (such as high strength nylon) to provide support in a head on collision. A unique feature of this harness relative to conventional seat belts is that, the Harness may be installed such that it does not touch the passenger in normal operation, but provides exceptional protection under impact. The embodiment illustrated in Figure 2 B shows how the Harness covers the front of the body with a hinged mount on the interior side of the seat and a locking device on the exterior side of the seat. Another unique feature of this harness is that it may extend over the upper body, obviating the need for a front collision airbag for the protection of the passenger. DEPENDANT CLAIM 13 (CLAIM 15) .SEAT INSERTS FOR CUSTOMIZATION/CHILD SEAT The structure as in Claim 2 with inserts for customizing the seats for individual passengers. Such customization can be for children. DEPENDANT CLAIM 14 (CLAIM 16) : DOOR SUPPORT FOR EJECTOR SLIDE/SLIDE BEAM The structure as in Claim 2 with a rear hinged door that provides support for the Ejector Slide and in some embodiments an extending section of the Slide Beam. This will be particularly useful for Ejector Slides that have multiple seats in larger vehicles. DEPENDANT CLAIM 15 (CLAIM 17) ;GRAVITY SLIDE DRIVE (MANUAL SLIDE) The structure as in Claim 2 with the Gravity Slide Drive defined herein as a dependant claim of the invention, may be used for manual operation of the Ejector with Crash Safety Beam. Several variations of the following are possible without deviating from the invention and this claim. The Gravity Slide Drive operates as follows : The slide has two inclinations 4 - the "operating inclination" and the "loading inclination" . The operating inclination has a slight incline upwards from the center of the vehicle. This is the incline of the slide that will be locked into position during the operation of the vehicle. The weight of the passenger will draw the passenger towards the operating position in the operating inclination despite the resistance of the "loader spring" to be defined below. 4 Note that the inclination refers to the slide mechanism that in some embodiments will be rollers. It does not refer to the inclination of the Slide Beam or the Easy Ejector Slide. These would normally be horizontal in the operating position to maximize the impact resistance. The Loading inclination has a slight downward inclination so that the passenger's weight will slide out the seat and the slide to the extended position. There is an "Open" button, handle or other device on the inside and the outside of the vehicle for each passenger as in conventional motor vehicles. These will be referred to as the "Inside-Open" and the "Outside-Open" buttons. Case A (With passenger in seat) : From the operating position when the Inside-Open button is operated, the Slide moves and is locked to the Loading inclination and the seat slides out permitting the passenger to dismount. At the time of dismounting the release of the weight of the passenger from the slide raises and locks the Slide in the Operating Inclination. When the new passenger sits on the seat the body weight of this passenger slide the seat and the Slide to the Operating Position. IF there is no new passenger, the empty seat may be allowed to slide under gravity to the operating position. A spring mechanism will retard this motion so that while it is easy to slide in it is not automatic. Case B (With no passenger in seat) : To mount the seat, the passenger will operate the Outside-Open button. This will allow the slide to be drawn out assisted by the Spring mechanism. The Slide will be in the Operating Inclination during this movement, however the spring action will ease the movement of the slide to the extended position as there is no weight of a passenger in the seat to counter. Note that the Outside-Open button does not release the catch for the depression of the slide to the Mounting Inclination whereas the Inside-Open button does.

Inventors: RAJASINGHAM ARJUNA IWDRAESWARA, RAJASINGHAM, ARJUNA, IWDRAESWARAN
Applicants: RAJASINGHAM ARJUNA IWDRAESWARA, RAJASINGHAM, ARJUNA, IWDRAESWARAN
Application year: 1998
Main classification: B60R27
IPC codes: B60N2, B60R19, B60R21, B60R99, B62D21