US3788461A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-cleaning endless belt
Assignee: Individual
•
Filing: 1972-07-17
•
Granted: 1974-01-29
•
Expires: 1992-07-17
Abstract
Abstract An endless belt having an upper train and a lower train and comprised of a plurality of spaced, parallel links running transversely to the direction of movement of the belt, and with at least one opening formed intermediate the side edges of the belt and having in conjunction therewith a single piece of material pivotally connected across the leading edge of the opening so as to pivot about an axis parallel to the transverse links, such that when the piece of material is riding about the upper train it covers the opening to aid in transporting that which is being moved by the belt, and when riding about the lower train it drops away from the opening and exposes the interior of the belt.
Inventors
- 👤 T Friesen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:09
CPC Classifications
A; A01; A01D; A01D17/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
147 words
An endless belt comprising: a plurality of bars having their outer ends formed for articulated connection with an adjacent outer end, said bars being spaced apart and extended parallel each other and transversely to the direction of movement of the belt; means for moving the belt unidirectionally in a circular manner such as to have an upper train and a lower train; a plurality of adjacent ones of said bars, less than the total number thereof, having their intermediate portions removed, leaving shortened portions at each end thereof, the inner ends of the shortened portions formed for articulated connection with an adjacent bar, whereby at least one opening is formed within the belt; means movably connected to said belt for covering the opening when the opening is in the upper train, said covering means self-movable away from the opening when the opening is in the lower train.
Claim 2
Dependent Claim
147 words
An endless belt comprising: a plurality of bars having their outer ends formed for articulated connection with an adjacent outer end, said bars being spaced apart and extended parallel each other and transversely to the direction of movement of the belt; means for moving the belt unidirectionally in a circular manner such as to have an upper train and a lower train; a plurality of adjacent ones of said bars, less than the total number thereof, having their intermediate portions removed, leaving shortened portions at each end thereof, the inner ends of the shortened portions formed for articulated connection with an adjacent bar, whereby at least one opening is formed within the belt; means movably connected to said belt for covering the opening when the opening is in the upper train, said covering means self-movable away from the opening when the opening is in the lower train.
Claim 3
Dependent Claim
25 words
An endless belt as described in claim 1, and further wherein said covering means comprises a relatively flat closure member capable of covering said opening.
Claim 4
Dependent Claim
75 words
An endless belt as described in claim 2 and further wherein said closure member has a portion thereof movably connected to a bar at the leading end of the opening toward the direction of movement of the belt such that during movement across the upper train the closure member lays relatively flat over the opening, and during movement across the lower train the closure member swings downwardly about the said bar and uncovers the opening.
Claim 5
Dependent Claim
42 words
An endless belt as described in claim 3, and further wherein said closure member extends rearwardly from said movable connection, relative to the direction of movement of the belt, and extends over a portion of the belt rearwardly of said movable connection.
Claim 6
Dependent Claim
24 words
An endless belt as described in claim 4, and further wherein the opening comprises at least one half the transverse width of the belt.
Claim 7
Dependent Claim
29 words
An endless beLt as described in claim 5, and further wherein said closure member has a rigidity sufficient to enable it to support that which the belt is moving.
References Cited (Backward Citations)
US861484A
Cited
US1771516A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-28 | 1977-07-30 | 1978-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-28 | 1981-07-30 | 1982-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-28 | 1985-07-30 | 1986-01-29 | $7700.00 | Window Closed / Lapsed |