A seat occupant-activated underseat support air-cushion consisting of: a support base, an airtight expandable aircushion, resting in the support base, with the top of the air-cushion pressing upward against the bottom side of the vehicle seat cushion, with an air pump or pumps, disposed within, air-cushion which is provided with outside air-intake or intakes, air pump or air pumps arranged within to be normally expanded, filled with air on the beginning of the air pumps compression stroke in a manner so that any downward pressure by the seat occupant's weight would cause the pump or pumps to compress air, discharging it thru the pumps check valve into the air-cushion. Air-cushion to be equipped with an adjustable automatic air pressure regulating valve, discharging surplus air to exterior of air-cushion. Thus providing the seat occupant with an air-cushion ride, the constant motion of the moving vehicle to provide a continuing source of energy to operate the air-cushion.

SUMMARY 
A primary object of this invention is to provide a new seat 
occupant-powered air-cushioned vehicle seat. This will reduce the stress 
and strain on vehicle passengers allowing them to travel more comfortably, 
thereby reducing fatigue and accidents. 
Another object of this invention is to provide a supplemental 
occupant-powered air-ride cushioned seat to regular spring type vehicle 
seats. This will supply greater comfort and help prevent heavyweight 
persons from destroying the springs and eliminate subsequent sag in 
ordinary spring-type seats. 
A still further object of this invention is to provide a means of driver 
and passenger safety and comfort without the use of direct energy from the 
vehicle's electrical or hydraulic systems thus resulting in a savings of 
energy and reducing enviromental pollution. 
Various other objects and advantages of this invention will hereinafter 
become more fully apparent from the following description of the drawings, 
illustrating a presently preferred embodiment thereof, and wherein.

DESCRIPTION OF THE PREFERRED EMBODIMENT 
Referring more specifically to the drawings: the entire seat assembly is 
referred to as Item 1, best illustrated in FIG. 1. The back of the vehicle 
seat is Item 2. The seat bottom is Item 3 in FIG. 1. The horizontally 
disposed springs are Item 4 in FIG. 4. The seat legs are Item 5 as seen in 
FIG. 4. The flexible air-cushion under the vehicle seat is Item 6 seen in 
FIGS. 2, 3 & 4. The bellows type air-pump within the air-cushion is Item 7 
best illustrated in FIG. 4. The air-pump Item 7 is activated by the weight 
of the occupants body moving or shifting slightly up and down as the 
vehicle is in motion. Item 8 is the regulating air-discharge valve on the 
air-cushion with its restricting and regulating means which is adjustable 
regulator to control airflow out of the air-cushion, making it firm, 
medium, or soft as adjusted by the regulating valve adjusting knob Item 
16. Item 19 is the air-intake to the pump Item 7 best shown in FIGS. 4 and 
7, with air-intake Item 19 connecting to outside of the air-cushion. Item 
17 in FIG. 7 is an air passage way to the air intake pump valve Item 9 the 
air check reed valve Item 18 is mounted on top of the air intake valve 
item 9 shown in FIG. 7. Item 10 is the support member for the air-cushion, 
shown corrugated to allow free air passage to the air pump Item 7. seen in 
FIG. 4 Item 11 is the air-check valve that connects from the bellows pump 
Item 7 as shown is FIGS. 4 and 6. This flat discharge allows the air from 
inside of the air pump Item 7 to discharge into the air-cushion Item 6 and 
not flow back into the pump Item 7. FIG. 4, Item 20 is a coil spring 
thrusting upward keeping pump bellows normally streched upward against 
seat bottom Item 3, while at the same time thrusting downward against 
support member Item 10 thus assuring positive air pumping action. 
Item 12 is best viewed in FIG. 5. It is the opening from the air discharge 
valve of the air-cushion to outside of the air-cushion Item 6. The air 
volume is controlled by adjusting lever Item 15 attached to adjusting knob 
Item 16 located outside of cushion Item 6. Two retangular boxes in FIG. 5 
marked V and R mean that any type of suitable valve may be used that can 
be adjusted to suitably regulate air discharge volume satisfactorily. The 
valve Item 8 has a volume adjusting regulator or Item 14 and the valve 
body is Item 13. Section A--A shows the placement of the valve Item 8, 
seen in FIG. 4. FIG. 7 shows the details of the pump intake valve Item 9 
location in section B--B in FIG. 4. It allows air to enter air pump Item 7 
and has been previously mentioned. However any suitable type of intake 
valve may be used as this valve's particular arrangement is not claimed in 
the invention. From the foregoing description, it becomes apparent that an 
air-cushion resting on a supporting member underneath it is capable of 
adding a comfortable support within a vehicle seat. It is also possible 
to, with the weight of the seat passenger moving upward and downward on 
the seat to operate the air pump and inflate the air-cushion under the 
seat to a regulated degree of air-ride comfort never before attainable 
with ordinary springs. This will make it possible for people to feel like 
they are truly riding on a cloud of air. Referring to FIG. 2 and FIG. 3. 
The retangular boxes marked "P" refer to additional air pumps if desired. 
Various other modifications and changes are contemplated and may be 
restored to, without departing from the function or scope of the invention 
.