US4121708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Folded springs for vibratory feeders and conveyors
Assignee: Individual
•
Filing: 1977-05-20
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Granted: 1978-10-24
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Expires: 1997-05-20
Abstract
Abstract The specification discloses a spring for powering a vibratory feeder or conveyor made up of a first leaf spring and a second leaf spring in closely spaced relation to each other. The ends of each of the two leaf springs are rigidly clamped to corresponding ends of one another and a spacer is rigidly clamped between the springs at said ends. The center of one spring leaf is fixed to the conveyor, while the center of the other spring leaf is fixed to a vibratory motor.
Inventors
- 👤 William H. Benson
- 👤 Thomas H. Falconer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:29
CPC Classifications
B; B65; B65G; B65G27/00; B65G27/10; B65G27/16; B65G27/26
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
200 words
A vibratory conveyor comprising, a frame, a conveyor member fixed to said frame, said frame having two spaced parts, a motor between said two spaced parts of said frame, means suspending said motor and said frame, a first spring on one side of said motor between said motor and said frame and a second spring at the second side of said motor between said motor and said frame, said springs each comprising a first leaf having a first end and a second end and a second leaf having a first and a second end, first spacer means between said first end of said first leaf and said first end of said second leaf rigidly connecting said first ends together, the ends of said springs being free to vibrate with each other, second spacer means between said second ends of said first leaf and said second end of said second leaf rigidly connecting said second end of said first leaf and said second end of said second leaf in spaced relation to each other, third spacer means between the mid-points of said first leaves and said motor, fourth spacer means rigidly connecting said mid-points of said second leaves to said frame.
Claim 2
Dependent Claim
200 words
A vibratory conveyor comprising, a frame, a conveyor member fixed to said frame, said frame having two spaced parts, a motor between said two spaced parts of said frame, means suspending said motor and said frame, a first spring on one side of said motor between said motor and said frame and a second spring at the second side of said motor between said motor and said frame, said springs each comprising a first leaf having a first end and a second end and a second leaf having a first and a second end, first spacer means between said first end of said first leaf and said first end of said second leaf rigidly connecting said first ends together, the ends of said springs being free to vibrate with each other, second spacer means between said second ends of said first leaf and said second end of said second leaf rigidly connecting said second end of said first leaf and said second end of said second leaf in spaced relation to each other, third spacer means between the mid-points of said first leaves and said motor, fourth spacer means rigidly connecting said mid-points of said second leaves to said frame.
Claim 3
Dependent Claim
35 words
The vibratory conveyor recited in claim 1 wherein two said first springs are provided at one side of said motor means and two said second springs are provided at the other side of said motor.
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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |