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Patent US3757930A successfully refreshed from Google Patents.
US3757930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor belt suspension
Assignee: Goodrich Corp
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Filing: 1970-05-18
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Granted: 1973-09-11
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Expires: 1990-05-18
Abstract
Abstract A resilient idler suspension for conveyor belts having suspension arms cantilevered in pairs axially spaced about a common pivot shaft with each of the arms attached to the pivot shaft by an intermediate elastomeric torsion spring such that rotation of the arms about the pivot shaft is resiliently resisted. Pairs of arms each have a conveyor idler roller rotatably mounted between the free ends of the arms. Three of the pivot shafts may be arranged in angular relationship in a common plane transversely of the conveyor belt so that the idlers support the belt in the form of a trough.
Inventors
- 👤 J Kramer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:09
CPC Classifications
B; B65; B65G; B65G39/00; B65G39/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
In combination, a conveyor belt to be supported and an idler suspension comprising: a. a support including a plurality of shaft means disposed in a common plane transversely of the belt in spaced end-to-end arrangement; b. at least two torsion spring means attached to each of said shaft means in a manner preventing relative rotation therebetween, each of said spring means including an annulus of elastomeric material as the yieldable portion; c. a plurality of arm means each having a portion attached to one of said torsion spring means in a manner preventing relative rotation therebetween, with each of said arm means extending radially in cantilever relationship therefrom; d. conveyor belt idler means mounted on each of said arm means for contacting the said conveyor belt, whereby variation in loads on said belt is resiliently resisted by the said respective torsion spring means.
Claim 2
Dependent Claim
143 words
In combination, a conveyor belt to be supported and an idler suspension comprising: a. a support including a plurality of shaft means disposed in a common plane transversely of the belt in spaced end-to-end arrangement; b. at least two torsion spring means attached to each of said shaft means in a manner preventing relative rotation therebetween, each of said spring means including an annulus of elastomeric material as the yieldable portion; c. a plurality of arm means each having a portion attached to one of said torsion spring means in a manner preventing relative rotation therebetween, with each of said arm means extending radially in cantilever relationship therefrom; d. conveyor belt idler means mounted on each of said arm means for contacting the said conveyor belt, whereby variation in loads on said belt is resiliently resisted by the said respective torsion spring means.
Claim 3
Dependent Claim
76 words
The suspension system defined in claim 1, wherein each of said shaft means is disposed transversely of the conveyor belt in angular arrangement in a manner forming the conveyor belt into a trough, said arm means include at least two pairs of said arms with the arms of each pair extending radially from the shaft means to which it is attached in spaced parallel relationship and with the said pairs disposed in two arcuately spaced rows.
Claim 4
Dependent Claim
80 words
The suspension defined in claim 1, wherein a. said arm means are disposed in two rows arcuately spaced about each of said shaft means with at least one pair of arms disposed in spaced parallel arrangement in each row; and, b. said idler means is a roller having each end thereof rotatably mounted, respectively, on one of each pair of said arms and extending axially intermediate the arms of each pair of substantially parallel to the respective adjacent shaft means.
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) | 1976-09-10 | 1977-03-12 | 1977-09-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-10 | 1981-03-12 | 1981-09-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-10 | 1985-03-12 | 1985-09-11 | $7700.00 | Window Closed / Lapsed |