US3826353A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyors
Assignee: Individual
•
Filing: 1972-08-04
•
Granted: 1974-07-30
•
Expires: 1992-08-04
Abstract
Abstract A conveyor includes a first elongated support which is movably coupled to a support structure, and a second elongated support which is supported by the first support. A conveyor belt, engaged with the first support, the second support, and a motor, tends to extend or retract the second support with respect to the first support depending on the sense of rotation imparted to the belt by the motor. However, brake means connected between the first and second supports continuously create a frictional force which prevents relative motion between the first and second supports due to the action of the free running belt. The second support includes means for directly trapping the moving belt, thereby causing the belt to apply a force between the first and second supports which overcomes the frictional force provided by the brake means and creates relative motion between the first and second supports.
Inventors
- 👤 C Greasley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:03
CPC Classifications
B; B65; B65G; B65G15/00; B65G15/22; B65G15/26; B65G2201/00; B65G2201/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
179 words
A conveyor, comprising: a support structure; a first elongated support coupled to the support structure; a second elongated support movably coupled to the first support; an endless conveyor belt movable on rollers carried by the first and second supports; means for driving the belt in either of two opposed senses, said belt being disposed so that when driven in one or other sense the belt urges said second support towards an extended or retracted position, respectively, in relation to the first support; brake means for providing a continuous frictional engagement between the first and second support to resist movement of the second support with respect to the first support by means of the free running belt; and means for directly trapping the belt to overcome the friction force of said brake means, thereby causing the belt, depending on its sense of movement, to extend or retract the second support with respect to the first support, said belt-trapping means comprising a handle operable to trap the belt between the handle and a member fixed in relation to the second support.
Claim 2
Dependent Claim
179 words
A conveyor, comprising: a support structure; a first elongated support coupled to the support structure; a second elongated support movably coupled to the first support; an endless conveyor belt movable on rollers carried by the first and second supports; means for driving the belt in either of two opposed senses, said belt being disposed so that when driven in one or other sense the belt urges said second support towards an extended or retracted position, respectively, in relation to the first support; brake means for providing a continuous frictional engagement between the first and second support to resist movement of the second support with respect to the first support by means of the free running belt; and means for directly trapping the belt to overcome the friction force of said brake means, thereby causing the belt, depending on its sense of movement, to extend or retract the second support with respect to the first support, said belt-trapping means comprising a handle operable to trap the belt between the handle and a member fixed in relation to the second support.
Claim 3
Dependent Claim
23 words
A conveyor as claimed in cLaim 1, in which the belt trapping means is mounted at a forward location on the second support.
Claim 4
Dependent Claim
31 words
A conveyor as claimed in claim 1, in which the brake means comprises brake pads carried by the second support engaged with an elongated brake plate carried by the first support.
Claim 5
Dependent Claim
21 words
A conveyor as claimed in claim 1, including hydraulic means for pivoting the first support in relation to the support structure.
Claim 6
Dependent Claim
49 words
A conveyor as claimed in claim 1, in which the support structure includes a main support and a further elongated support pivoted to the main support and to the first support and carrying rollers engageable with the belt, and means for effecting pivotal movement of the further elongated support.
Claim 7
Dependent Claim
20 words
A conveyor as claimed in claim 5, in which the belt drive means is mounted on the further elongated support.
Claim 8
Dependent Claim
16 words
A conveyor as claimed in claim 1, in which the support structure is mounted on wheels.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |