US3602364A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Segmented belt
Assignee: JP Stevens and Co Inc
•
Filing: 1969-07-22
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Granted: 1971-08-31
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Expires: 1989-07-22
Abstract
Abstract A flexible belt formed of hinged segments with two or more segments and preferably separated by spaces. The belt is formed of a suitable plastic, such as an elastomer of the polyurethane type. On one side of each segment there are short integral hollow cylinders and mating cylinders on the other side. When two units are placed together the hollow cylinder portions meet to form a substantially complete cylinder in the same manner as a series of hollow cylinders in a hinge for a door. A pin, such as a more or less rigid nylon pin, is passed through the cylinders of the units to form a hinged structure, and this is repeated until endless flexible belts are produced. The units have flat surfaces abutting opposite flat surfaces at the joint, which prevents the hinge opening any substantial amount. The belts are principally useful as snowmobile treads but are also effective for power transmission or for conveyors. The belts are provided with suitable openings or projections which can engage pulleys or sprockets for drive purposes. Some flexibility in each unit is necessary to give the desired belt contour.
Inventors
- 👤 Ralph A Maglio
- 👤 Donald N Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:13
CPC Classifications
E; E04; E04C; E04C3/00; E04C3/30; B; B62; B62D; B62D55/00; B62D55/08; B62D55/18; B62D55/24; B62D55/253; E04B; E04B1/00; E04B1/32; E04B1/3205; E04H; E04H12/00; E04H12/02; E04B2001/327; E04B2001/3276
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
26 words
A snowmobile track according to claim 1 in which the hollow members project beyond the flat segments to form a traction ridge transversely of the belt.
Claim 2
Dependent Claim
40 words
A snowmobile track or belt according to claim 2 in which at least one additional transverse projecting ridge is cast across the flat portions of the segments, the projection being on the same side as that of the hollow elements.
Claim 3
Dependent Claim
15 words
A snowmobile track according to claim 3 in which the segments are of polyurethane elastomer.
Claim 4
Dependent Claim
15 words
A snowmobile track according to claim 2 in which the segments are of polyurethane elastomer.
Claim 5
Dependent Claim
198 words
A segmented belt or track suitable for operation in contact with particulate matter on one side of the belt only comprising a plurality of substantially equal length flat segments along the length of the track, each segment being provided with separated, mating, hollow elements on both transverse edges of the segment and the hollow elements being unitarily cast of an elastomer and the hollow elements on the two edges mating, the hollow elements extending substantially out to the outer edges of the belt; the segments being fastened together by pins through the hollow segments forming hinges, the hollow elements on the edges of the segments having substantially flat faces abutting directly against opposite substantially flat faces of adjacent mating segments said pins being within the perpendicular projection of said faces so that when pinned the hinges cannot open to any substantial angle and the flexibility of the belt at the hinge is therefore determined primarily only by the flexibility of the elastomer forming the segments, whereby the edges of each segment forming the outer edges of the belt are held against deflections up Or down, thus preventing passage of particulate matter through the belt at the outer edges
Claim 6
Dependent Claim
23 words
A belt or track according to claim 1 in which the flat portions of the segments are reinforced with embedded fibers or fabrics.
Claim 7
Dependent Claim
22 words
An endless belt according to claim 1 in which the projections of the hollow members are on the inside of the belt.
Claim 8
Dependent Claim
31 words
An endless belt according to claim 7 in which at least one transverse rib is cast in the flat portion of the segment extending out onto the inside of the belt.
Claim 9
Dependent Claim
16 words
A conveyor belt according to claim 7 is which the outer surface is smooth and continuous.
Claim 10
Dependent Claim
17 words
A conveyor belt according to claim 7 in which the outer surface is provided with friction elements.
Claim 11
Dependent Claim
15 words
A conveyor belt according to claim 10 in which the friction elements are suction cups.
Claim 12
Dependent Claim
60 words
A belt or track according to claim 1 in which the flat segments form a belt with slots when they are pinned together and some of the hollow elements are of sufficient length to bridge the spaces between the flat segment sections so that each segment is a unit and slots are formed between the portions of the flat segments.
Claim 13
Dependent Claim
47 words
A segmented snowmobile track according to claim 12 in which the hollow elements project on one side of the segments and form traction ridges transversely of the segments, the slots between the portions of flat parts of the segments being dimensioned to mate with snowmobile driving sprockets.
Claim 14
Dependent Claim
15 words
A snowmobile track according to claim 13 in which the segments are of polyurethane elastomer.
Claim 15
Dependent Claim
23 words
A belt or track according to claim 14 in which the flat portions of the segments are reinforced with embedded fibers or fabrics.
Claim 16
Dependent Claim
18 words
A snowmobile track according to claim 13 in which the pins through the hollow members are of Nylon.
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) | 1974-08-30 | 1975-03-01 | 1975-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-30 | 1979-03-01 | 1979-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-30 | 1983-03-01 | 1983-08-31 | $7700.00 | Window Closed / Lapsed |