摘要:
The invention involves a two-piece seat for a passenger-carrying vehicle with the seat being capable of complying with the federal requirements with reduced complexity. A steel plate is rigidly attached to the rotating seat back. The steel plate will prevent the seat back from rotating during normal use. If the bus were in a collision, a belted occupant would apply load to the rotating seat back through the seat belts. The steel plate would deform, allowing the rotating seat back to come forward. The fixed portion of the seat back remains in position to act as a passive restraint for any passengers seated behind this particular seat. Utilizing deformable steel plates to retain and control the operation of a rotating seat back equipped with 3-point restraints is a unique aspect to this invention. The plates will retain the rotating seat back in normal use to prevent vandalism to the seat belts, and can be easily removed so the seat back can be rotated forward for servicing the seat belts and upholstery covers.
摘要:
The invention involves a seat system with a movable and immovable portions that may be maintained and still operate during transients as required under the federal regulations. There is a quick release serviceability latch for a school bus passenger seat with integrated restraints. The inner and outer seat backs must be quickly detached from one another to facilitate repair or replacement of damaged seat components. A movable plunger is rigidly attached to the inner seat back frame. Another bracket with hole to accept the plunger is rigidly attached to the back pan of the outer back. The attachment of inner to outer seat backs must be strong enough so that they can't be pulled apart by hand but at the same time be detachable in the event of a crash. A tab that engages the plunger separates upon a rapid deceleration event.
摘要:
A vehicle passenger seat mixed passive/active occupant restraint provides a two element seat back frame. A first frame element provides for energy absorption from a seat belt fitted to a passenger in the vehicle passenger seat. The second frame element absorbs energy from an unrestrained passenger impacting thereon. The first frame element may be mounted forward from, or nesting, the second frame element.
摘要:
A vehicle passenger seat active occupant restraint provides for absorbing energy from a passenger during sudden deceleration of a vehicle. The torso belt portion of a three-point restraint system is anchored using a spring and a displacement limiting linkage at the opposite end from its point of connection to the lap portion of the belt. During deceleration energy is transferred from the restrained occupant to the spring up to the displacement limit.
摘要:
The invention involves shifting the location of the seat belt retractor in order to reduce the thickness of the seat especially in the lower regions for a mobile vehicle seat. The seat may be used for a mobile vehicle as a school bus as well as for automotive applications. The seat belt retractors are attached to a portion of the seat structure that allows the webbing to exit the retractor on the front surface of the seat back. The webbing is then allowed to cross over to the rear surface of the seat back as it rises to the turning-loop. The retractor may be located forward of the seat back pivot point on the seat frame in order to allow for the webbing to exit on the front surface of the seat back.
摘要:
The invention involves creating a thinner structured seat capable of complying with the federal requirements. The steel back pan is rigidly mounted on three edges to the back frame seat structure. The bottom of the back pan is unformed and allowed to flex in the fore-aft direction. The back pan is then covered with foam that may be one third as thick at the bottom as to thickness at the top of the back pan. The three to one ration of the lower to upper portion for the foam is important in achieving seat thinness. When seat spacing is measured at the h-point or cushion level, the knee protection zone is thinner than conventional seats and allows for a greater number of seats to be placed into a school bus. Utilizing a flexible steel back pan combined with foam in the proper ratios to absorb energy in the knee protection zone through the upper portion achieves the invention.
摘要:
The invention provides a seat for a bus that has a movable front frame or seat back that a seat occupant rests his or her back against normally. The front frame is the mounting point for the upper portion of a three-point seat belt. The seat frame contains a rear passenger support wall or rear frame to protect a passenger of rearward seat from moving out his safety zone in a forward direction in the event of a rapid deceleration. The rear frame is part of the seat frame and only moves upon initial contact by a rearward-unbelted passenger impact. A rotation guide slot defines the amount of rear frame movement. The front frame is limited in the amount of its forward pivoting movement by a tether, spring or fluid dampener that is engaged to an immovable portion of the frame and thereby limits forward travel of the front frame.
摘要:
A vehicle passenger seat with an upholstery cover having a fabric seam designed to absorb energy from a seat occupant upon impact. Means for progressively absorbing energy from the seat belt occupant are disclosed. Use of the fabric seam to absorb vehicle passenger seat occupant energy increases the survivability of an impact for an occupant of a seat with a separate inner and outer seat frame, and relates to compliance with energy absorption requirements for seat-backs of 49 C.F.R. Section 571.222 (FMVSS 222) and seat belt anchorage loading strength requirements of 49 C.F.R. Section 571.209 and 571.210 (FMVSS 209 and FMVSS 210).
摘要:
A method of preventing or treating lost circulation during the drilling of a well comprises the addition, at concentration ranging between about 0.5 and 6 pounds per barrel, of water-dispersible fibers having a length between about 10 and 25 mm, for instance glass or polymer fibers, to a pumped aqueous base-fluid including solid particles having an equivalent diameter of less than 300 μm.The base-fluid with the solid particles can be the drilling fluid or a small-volume pill specially pumped for curing lost circulation.
摘要:
A system for communicating to a motor vehicle operator the maximum safe speed at which the vehicle can be operated. The system includes receiver(s), sensor(s), processor(s) and dashboard display(s). The receiver(s) detects a legal speed limit. Sensor(s) detects environmental conditions surrounding the motor vehicle. The processor(s): receive data from the receiver(s) and sensor(s); calculates a maximum safe speed; and calculates a safe speed range based on the maximum safe speed and the legal speed limit. The dashboard display alerts the driver if the maximum safe speed is less than the legal speed limit, and displays the safe speed range if the maximum safe speed is less than the legal speed limit.