US4252039A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silent bar stock feeder
Assignee: Apparatebau Spradow GmbH
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Filing: 1979-01-31
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Granted: 1981-02-24
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Expires: 1999-01-31
Abstract
Abstract A silent feeder for revolving bar stock has a horizontal elongated feed bed with a beam supported by plural columns. Spaced adjustable holders are mounted on the feed bed at opposite sides of the stock, and each holder has a plurality of rollers bearing on the circumference of the bar stock, the rollers being preferably resiliently loaded radially of the bar stock.
Inventors
- 👤 Fritz Wittler
- 👤 Reinhard Bollman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:10
CPC Classifications
B; B23; B23B; B23B13/00; B23B13/08; Y; Y10; Y10T; Y10T82/00; Y10T82/25; Y10T82/2593; Y10T82/2595
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
156 words
A device, for feeding bar stock material along a linear feed path line to a bar processing machine, comprising: (i) a feeder beam extending the entire length of a feed path line of the device, (ii) a plurality of holders mounted on said feeder beam and positioned at intervals along said feeder beam, (iii) at least three pressure rollers carried by each holder, said pressure rollers of each holder being spaced each from the next along the feed path line and including at least one pair which are on alternate sides of the feed path line, said pressure rollers having their respective axes of rotation parallel to the feed path line, said pressure rollers each having a tread made of a resilient abrasion-resistant material for contacting bar stock passed along said feed path line, (iv) resilient loading means on each said holder acting on the pressure rollers to urge said rollers towards the feed path line.
Claim 2
Independent Claim
156 words
A device, for feeding bar stock material along a linear feed path line to a bar processing machine, comprising: (i) a feeder beam extending the entire length of a feed path line of the device, (ii) a plurality of holders mounted on said feeder beam and positioned at intervals along said feeder beam, (iii) at least three pressure rollers carried by each holder, said pressure rollers of each holder being spaced each from the next along the feed path line and including at least one pair which are on alternate sides of the feed path line, said pressure rollers having their respective axes of rotation parallel to the feed path line, said pressure rollers each having a tread made of a resilient abrasion-resistant material for contacting bar stock passed along said feed path line, (iv) resilient loading means on each said holder acting on the pressure rollers to urge said rollers towards the feed path line.
Claim 3
Dependent Claim
19 words
The device of claim 1 wherein each holder of said plurality of holders is adjustable along said feeder beam.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |