US3604281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Positive drive variable speed device
Assignee: Lovejoy LLC
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Filing: 1969-10-10
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Granted: 1971-09-14
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Expires: 1989-10-10
Abstract
Abstract A positive drive, variable speed device in which a belt support is formed of an elongated strip, the strip being coilable to vary its diameter and having longitudinal edge portions and a central slotted portion bendable to match the pitch diameter and pitch dimension of a continuous, toothed drivebelt and a pulley mounting for the belt support.
Inventors
- 👤 Howard G Shambaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:54
CPC Classifications
F; F16; F16H; F16H55/00; F16H55/32; F16H55/52; F16H55/54
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
45 words
A belt support for toothed belts and the like, said support comprising an elongated strip of bendable material, said strip having a longitudinal body portion, an offset slot portion and a plurality of slots longitudinally spaced throughout substantially the entire length of said slot portion.
Claim 2
Dependent Claim
45 words
A belt support for toothed belts and the like, said support comprising an elongated strip of bendable material, said strip having a longitudinal body portion, an offset slot portion and a plurality of slots longitudinally spaced throughout substantially the entire length of said slot portion.
Claim 3
Dependent Claim
22 words
The structure of claim 1 wherein said strip is coilable upon itself to form a substantially circular belt support of variable diameter.
Claim 4
Dependent Claim
27 words
The structure of claim 1 wherein said body portion lies in a first plane and said slot portion lies in a second plane paralleling said first plane.
Claim 5
Dependent Claim
48 words
The structure of claim 1 wherein said strip is coiled upon itself to form a substantially circular support, said body portion lies in a first substantially circular plane and said slot portion lies in a second substantially circular plane within said first plane and paralleling said first plane.
Claim 6
Dependent Claim
46 words
A variable speed device including a pair of variably spaced segments, a constant-width belt support carried by and between said segments, abutment means on said support and on at least one of said pulley segments for precluding relative rotation between said support and said pulley segments.
Claim 7
Dependent Claim
46 words
A variable speed device including a pair of variably spaced segments, a constant-width belt support carried by and between said segments, abutment means on said support and on at least one of said pulley segments for precluding relative rotation between said support and said pulley segments.
Claim 8
Dependent Claim
37 words
The structure of claim 5 wherein said belt support is variable in diameter and said pulley segments are relatively movable toward and away from each other to clamp said belt support therebetween at each of its diameters.
Claim 9
Dependent Claim
42 words
The structure of claim 5 wherein said belt support comprises an elongated strip of bendable material having a plurality of longitudinally spaced slots formed therein, and means for securing said strip in coiled form at various diameters on and between said segments.
Claim 10
Dependent Claim
27 words
The structure of claim 5 wherein said abutment means includes ear and slot means formed on at least one of said pulley segments and on said support.
Claim 11
Dependent Claim
62 words
The structure of claim 1 wherein said body portion includes spaced edge portions and said slot portion of said strip lies in a plane offset from and paralleling the plane occupied by said edge portions, said edge portions occupying a first plane, said slot portion occupying a second plane, said strip including joinder portions joining said slot portion to said edge portions.
Claim 12
Dependent Claim
24 words
The structure of claim 1 characterized by and including at least one ear segment extending laterally from at least one of said edge portions.
Claim 13
Dependent Claim
21 words
The structure of claim 10 wherein said ear segment is formed by a link extending beneath said strip and secured thereto.
Claim 14
Dependent Claim
20 words
The structure of claim 1 characterized by and including means for securing said strip in overlapped, coiled, substantially circular configuration.
Claim 15
Dependent Claim
41 words
The structure of claim 12 wherein said means includes segments defined in forming one of said slots and depending beneath said strip, said segments being insertable through one of said slots in an underlying portion of said strip and extendable therebeneath.
Claim 16
Dependent Claim
14 words
The structure of claim 13 in which said depending segments comprise yieldable snap-action elements.
Claim 17
Dependent Claim
44 words
The structure of claim 12 wherein said means for securing said strip in a coiled, substantially circular configuration includes a pair of generally U-shaped clips, said clips being formed and adapted to secure upper and lower end portions of said strip in overlying configuration.
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) | 1974-09-13 | 1975-03-15 | 1975-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-13 | 1979-03-15 | 1979-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-13 | 1983-03-15 | 1983-09-14 | $7700.00 | Window Closed / Lapsed |