Patent US3854419A successfully refreshed from Google Patents.
US3854419A
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Aerial tramway drive assembly
Assignee: SKY-TRAN Corp 1422 N 44TH ST PHOENIX AZ AN AZ CORP
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Filing: 1973-04-09
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Granted: 1974-12-17
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Expires: 1993-04-09
Abstract
Abstract An aerial tramway drive assembly comprises inner and outer drive wheel rim members detachably secured together for axial assembly and separation, and the rim members have similar oppositely inwardly inclined annular tire mounting surfaces each formed with circumferentially alternate axially extending projections and recesses. A resilient tire with a concave tread area is mounted on and between members, the tire having an inner periphery bridging both of the tire mounting surfaces and conforming in contour to interlock with the rim members at those surfaces, and being formed on opposite sides with annular surface recesses within which fit annular projecting ribs of the respective wheel rim members.
Inventors
- 👤 K Cocroft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:36
CPC Classifications
B; B61; B61C; B61C13/00; B61C13/06
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
56 words
An aerial tramway drive wheel comprising inner and outer wheel rim members detachably secured together for axial assembly and separation, axially inwardly projecting annular portions on said members, and similar oppositely inwardly inclined external peripheral tire mounting surfaces on said portions, each said surface being formed with circumferentially alternate axially extending projections and peripherally open recesses.
Claim 2
Dependent Claim
56 words
An aerial tramway drive wheel comprising inner and outer wheel rim members detachably secured together for axial assembly and separation, axially inwardly projecting annular portions on said members, and similar oppositely inwardly inclined external peripheral tire mounting surfaces on said portions, each said surface being formed with circumferentially alternate axially extending projections and peripherally open recesses.
Claim 3
Dependent Claim
36 words
In the tramway drive wheel defined in claim 1, said wheel rim members having said tire mounting surfaces formed on similar opposed and axially projecting portions that abut endwise in a plane centrally of the wheel.
Claim 4
Dependent Claim
31 words
In the tramway drive wheel defined in claim 1, said wheel rim members being formed radially outwardly of said tire mounting surfaces with similar opposed inwardly projecting tire side engaging ribs.
Claim 5
Dependent Claim
31 words
In the tramway drive wheel defined in claim 1, said axially projecting wHeel rim portion being provided with axially interfitting pilot and recess formations radially inwardly of said tire mounting surfaces.
Claim 6
Dependent Claim
54 words
In the tramway drive wheel defined in claim 1, each adjacent projection and recess at the tire mounting surface of each wheel rim member having a common flat radial side surface, and the top and bottom surfaces respectively of the projections and recesses on each wheel rim member lying substantially in coaxial conical envelopes.
Claim 7
Dependent Claim
97 words
An aerial tramway drive assembly comprising inner and outer wheel rim members detachably secured together for axial assembly and separation, said members having similar oppositely inwardly inclined annular tire mounting surfaces each formed with circumferentially alternate axially extending projections and peripherally open recesses, and a resilient tire mounted between said members, said tire having its inner periphery bridging both of said tire mounting surfaces and formed with two similar rows of circumferentially alternate inwardly inclined projections and inwardly open recesses so as to be conformed in contour to positively interlock with said rim members at said surfaces.
Claim 8
Dependent Claim
97 words
An aerial tramway drive assembly comprising inner and outer wheel rim members detachably secured together for axial assembly and separation, said members having similar oppositely inwardly inclined annular tire mounting surfaces each formed with circumferentially alternate axially extending projections and peripherally open recesses, and a resilient tire mounted between said members, said tire having its inner periphery bridging both of said tire mounting surfaces and formed with two similar rows of circumferentially alternate inwardly inclined projections and inwardly open recesses so as to be conformed in contour to positively interlock with said rim members at said surfaces.
Claim 9
Dependent Claim
33 words
In the tramway drive assembly defined in claim 6, said tire being formed on opposite sides with annular surface recesses and said wheel rim members having projecting ribs fitting into said annular recesses.
Claim 10
Dependent Claim
100 words
An aerial tramway drive assembly wherein a power driven shaft is rotatably mounted in a housing and a drive wheel is mounted outside the housing on a projecting end of said shaft, said drive wheel comprising an inner rim member secured to said shaft, an outer rim member removably secured to said inner rim member said rim members having similar oppositely inwardly extending annular tire mounting surfaces, and a resilient tire non-rotatably mounted on and between said rim members bridging said surfaces whereby said tire may be removed and/or installed without dismounting said inner wheel rim member from said shaft.
Claim 11
Dependent Claim
100 words
An aerial tramway drive assembly wherein a power driven shaft is rotatably mounted in a housing and a drive wheel is mounted outside the housing on a projecting end of said shaft, said drive wheel comprising an inner rim member secured to said shaft, an outer rim member removably secured to said inner rim member said rim members having similar oppositely inwardly extending annular tire mounting surfaces, and a resilient tire non-rotatably mounted on and between said rim members bridging said surfaces whereby said tire may be removed and/or installed without dismounting said inner wheel rim member from said shaft.
Claim 12
Dependent Claim
39 words
The tramway drive assembly defined in claim 8, wherein a brake drum rigidly projects from said inner wheel rim member toward the housing, and brake mechanism associated with said drum is mounted on a support fixed to said housing.
Claim 13
Dependent Claim
55 words
A tire for a tramway drive wheel assembly comprising an integral annulus of resilient material having an outer concave cable engaging periphery and a wheel rim mounting inner periphery that consists essentially of two similar rows of circumferentially alternate inwardly inclined projections and peripherally inwardly open recesses extending axially from opposite sides of the annulus.
Claim 14
Dependent Claim
55 words
A tire for a tramway drive wheel assembly comprising an integral annulus of resilient material having an outer concave cable engaging periphery and a wheel rim mounting inner periphery that consists essentially of two similar rows of circumferentially alternate inwardly inclined projections and peripherally inwardly open recesses extending axially from opposite sides of the annulus.
Claim 15
Dependent Claim
26 words
The tire defined in claim 10, wherein said annulus has substantially flat sides each formed with a similar annular surface recess of substantially the same diameter.
Claim 16
Dependent Claim
44 words
The tire defined in claim 10, wherein each adjacent projection and recess of each said row has a common flat radial side surface, and the top and bottom surfaces respectively of the projections and recesses of each row lying substantially in coaxial conical envelopes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-16 | 1978-06-17 | 1978-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-16 | 1982-06-17 | 1982-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-16 | 1986-06-17 | 1986-12-17 | $7700.00 | Window Closed / Lapsed |