Patent US3789976A successfully refreshed from Google Patents.
US3789976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor
Assignee: MSC Inc
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Filing: 1971-11-18
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Granted: 1974-02-05
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Expires: 1991-11-18
Abstract
Abstract A reciprocating bar conveyor having a plurality of parallel eccentrically supported bars angularly spaced from each other and grouped into at least two sets. Each set may be angularly spaced from each other set, and each set includes at least six bars which are individually angularly spaced from each other bar of the set. Each set of bars is supported on a pair of eccentric axles, only one of which need be connected to a drive motor.
Inventors
- 👤 P Dwight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:29
CPC Classifications
B; B65; B65G; B65G25/00; B65G25/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
244 words
A conveyor comprising a pair of parallel sets of parallel article supporting and conveying bars with each set comprising at least six bars, means supporting the bars of each set in angularly spaced eccentric relation with each bar equally angularly spaced from each other bar of the set for eccentric movement beneath an article resting thereon, said means supporting the bars being arranged to continuously present, during eccentric movement of the bars, a pair of bars with one from each set in cooperative article supporting relation on opposite sides of the center of mass of an article supported on the bars, said means for supporting the bars including a pair of regular polygonally shaped axles disposed spaced apart longitudinally of the bars and each having the same number of faces as the number of bars in each set and with the number of bar faces being at least six in number, a plurality of identical bar supporting discs with one for each bar, said discs having corresponding off-center polygonal apertures sized to slidably fit in driven relation on the polygonal axles and with the discs received thereon in angularly spaced relation in accordance with the angular spacing of the faces of the axles, each bar mounted on one of the discs on each axle to be driven in eccentric movement as aforesaid upon rotation of the axles, and means connected to one of the axles for rotating the same and thereby driving the bars.
Claim 2
Dependent Claim
244 words
A conveyor comprising a pair of parallel sets of parallel article supporting and conveying bars with each set comprising at least six bars, means supporting the bars of each set in angularly spaced eccentric relation with each bar equally angularly spaced from each other bar of the set for eccentric movement beneath an article resting thereon, said means supporting the bars being arranged to continuously present, during eccentric movement of the bars, a pair of bars with one from each set in cooperative article supporting relation on opposite sides of the center of mass of an article supported on the bars, said means for supporting the bars including a pair of regular polygonally shaped axles disposed spaced apart longitudinally of the bars and each having the same number of faces as the number of bars in each set and with the number of bar faces being at least six in number, a plurality of identical bar supporting discs with one for each bar, said discs having corresponding off-center polygonal apertures sized to slidably fit in driven relation on the polygonal axles and with the discs received thereon in angularly spaced relation in accordance with the angular spacing of the faces of the axles, each bar mounted on one of the discs on each axle to be driven in eccentric movement as aforesaid upon rotation of the axles, and means connected to one of the axles for rotating the same and thereby driving the bars.
Claim 3
Dependent Claim
65 words
The invention as defined by claim 1 wherein there is a polygonal axle for each set with the number of sides of the polygon being a function of the number of bars in the set, and the axles of the pair of sets are end connected in angular offset relation equal to one-half the angle between the sides of the polygonal shape of the axles.
Claim 4
Dependent Claim
22 words
In a conveyor as defined in claim 1 where the means for driving the bars is connected to both sets of bars.
Claim 5
Dependent Claim
46 words
A conveyor as defined in claim 1 wherein the means for supporting the bars comprises a pair of axles for each set and eccentrics thereon supporting the bars, and the means for driving the bars is connected only to one of the axles of each set.
Claim 6
Dependent Claim
45 words
A conveyor as defined in claim 1 wherein the eccentric discs have a thickness greater than the thickness of the bars and each of the bars in a set being in close proximity and having their eccentric discs touching to provide clearance between adjacent bars.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |