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Publication numberUS809048 A
Publication typeGrant
Publication dateJan 2, 1906
Filing dateAug 26, 1905
Priority dateAug 26, 1905
Publication numberUS 809048 A, US 809048A, US-A-809048, US809048 A, US809048A
InventorsJohn J Furchtbar
Original AssigneeJohn J Furchtbar
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
US 809048 A
Abstract  available in
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Claims  available in
Description  (OCR text may contain errors)

PATENTED JAN. 2, 1906.




ATTORNEYS JOHN J. rmion'rsas, OFJQETTA, trainers.

. versions.

Specification of Letters "Patent. i

Patented Jan. 2, 12412.

' Application filed August 26,1905. Serial No. 275.881.

skate, and the like. r

The invention consists ofnovel features and parts and combinations of the same, which will be more fully described hereinafter and then pointed out in theiclaims.

A practical embodiment of the invention is representedin the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a longitudinal sectional side elevation of the improvement. Fig. 2 is an inverted plan view of the same, parts being broken out; and Fig. 3 is a transverse section of the same on the line 3 3 of Fig. 1.

The frame or platform Afor supporting the load 18 provided with a longitudinally-ex tending guideway A, to the bottom of which is secured the up er run of an endless immovld. yieldingly in an extended position by an air-cushion C, which also supports the frame or platform A. On the immovable or fixed band B is superimposed a traveling band D, which forms the tread of the vehicle and comes in contact with the surface over which the device is to travel. A lubricating-pad E is interposed between the upper runs of the bands B and D, so as to keep the contacting surfaces of the said bands proplerly oiled or lubricated.

T e air-cushion C is provided at one side wlth a suitable valve F for connection with an air-pump or similar 'machine employed for inflating the air-cushion C by pumping air into the same. The bottom of the aircushion C and the lower run of the fixed band B are provided with registering apertures C and B to allow some of the air in the cushion C to pass between the lower runs of the bands B and D with. a view to reduce the frictional contact of the said bands at the lower runs to a minimum.

suitable means what-ever, then the outer band D is caused to travel over the fixed or inner band B,'it being understood that the lower run of the said outer or traveling band D comes in contact with the surface over which the device is to be propelled, and hence the frictional contact of the outer hand with the said surface causes it to travel. By the arrangement described the air-cushion C holds the fixed band B in an extended position, as described and shown in the drawings, and at the same time the said air-cushion supports the frame or platform A, carrying the load, and when the band D travels over uneven or rough ground it is evident that the air-cushion 0 allows the bands D and B to yield "to conform to the unevenness in the surface.

The device is very simple and. durable in construction and allows the carrying of heavy loads with comparatively little power or exertion on the part of the person drawing the sled or similar device forward.

The bandsB and D are preferably made of steel or like flexible material, while therushi on .C may be made of rubber or the like.

Having thus described my invention, 1 claim as new and desire tosecure by Letters Patent 1. A vehicle provided with a yi'eldinglysustained immovable endless band, and a traveling endless band superimposed on the said immovable endless band and adapted to frame, an air-cushion for sustaining the said frame, an endless band fixed to the frame, and a traveling band superimposed on the said fixed band and adapted to travel on the, same.

4. A vehicle provided with an immovable endless band. a traveling endless band superimposed on the said fixed endless band and adapted to travel on the same, an air-cushion for sustaining the said innnovable band, and means for delivering a strata of air between the said bands from the said air-cush 1011. hen the device is drawn for 11rd by any 5. A vehicle provided with a pneumatically-sustained immovable endless band, and

prsence of nun. in

he said 1

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2575845 *Jun 15, 1948Nov 20, 1951Otto SingerTraveling endless track
US2652289 *Apr 14, 1950Sep 15, 1953Gregory Bekker MieczyslawTracked gear with cushioned lubricated leakproof skid suspension
US2714011 *Jan 7, 1952Jul 26, 1955William H AlbeeLand vehicle or load-moving device comprising a flexible-walled, fluid-containing, peripherally-loaded roller
US2918681 *Jun 30, 1953Dec 29, 1959Fenimore E DavisPatient transfer device
US3074499 *Dec 3, 1959Jan 22, 1963Martin Eng CoSelf propelled vehicle track
US3074764 *Dec 3, 1959Jan 22, 1963Martin Eng CoAir track
US3104084 *May 4, 1960Sep 17, 1963Lovercheck Charles LLanding gear for aircraft
US3161247 *May 19, 1961Dec 15, 1964Gen Motors CorpAir cushion load supporting device
US3168069 *Mar 8, 1963Feb 2, 1965Hovercraft Dev LtdVehicles for travelling over a surface
US3170533 *Jul 5, 1963Feb 23, 1965Ling Temco Vought IncVehicle with pneumatic support
US3331461 *Sep 2, 1964Jul 18, 1967Vicker Armstrong Engineers LtdAir cushion borne vehicles having endless flexible treads
US3809433 *Nov 20, 1972May 7, 1974Mulasmajic DAnti-friction vehicle support system
US3950038 *Jun 12, 1972Apr 13, 1976Aero-Go Engineering & Development Co.Fluid bearing track device
US4283094 *Aug 17, 1979Aug 11, 1981Bertelsen William RAir suspension system for vehicle track
US4440253 *Feb 22, 1982Apr 3, 1984Bertil PernumCrawler-type transport apparatus
Cooperative ClassificationY10S280/07, B62D55/1125