Patent US4463889A successfully refreshed from Google Patents.
US4463889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Special screw feed mechanism for screws, bolts, rivets, nails, etc.
Assignee: Aro Corp
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Filing: 1982-03-25
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Granted: 1984-08-07
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Expires: 2002-03-25
Abstract
Abstract A screw feed mechanism includes a pivoting magazine positioned in a housing. The magazine includes a single throughbore which receives a single screw from a feeder hose and then pivots into alignment with a drive tool. The magazine is driven by a pneumatic cylinder.
Inventors
- 👤 Bernard C. Sartran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:53
CPC Classifications
B; B25; B25B; B25B23/00; B25B23/02; B25B23/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
136 words
An improved screw feed mechanism comprising, in combination: a housing having a throughbore defining a tool axis, a magazine chamber on the axis separating the throughbore into a tool bore and a collet bore; a tool in the tool bore translatable along the axis through the region of the chamber; fastener supply means; a fastener magazine in the chamber, said magazine including a throughbore for receipt of a fastener, said magazine mounted in the chamber for pivotal movement about an axis transverse to the tool axis on a pivot substantially intersecting the tool axis between a first position aligning the magazine throughbore with the tool axis and a second position for receipt of a fastener from the fastener supply means; and pneumatic means for pivoting and aligning the magazine in at least one of the positions.
Claim 2
Dependent Claim
136 words
An improved screw feed mechanism comprising, in combination: a housing having a throughbore defining a tool axis, a magazine chamber on the axis separating the throughbore into a tool bore and a collet bore; a tool in the tool bore translatable along the axis through the region of the chamber; fastener supply means; a fastener magazine in the chamber, said magazine including a throughbore for receipt of a fastener, said magazine mounted in the chamber for pivotal movement about an axis transverse to the tool axis on a pivot substantially intersecting the tool axis between a first position aligning the magazine throughbore with the tool axis and a second position for receipt of a fastener from the fastener supply means; and pneumatic means for pivoting and aligning the magazine in at least one of the positions.
Claim 3
Dependent Claim
19 words
The mechanism of claim 1 including a fastener feeder passage aligned with the fastener magazine in the second position.
Claim 4
Dependent Claim
28 words
The mechanism of claim 2 wherein the axes of the tool bore and the feeder passage and of rotation of the magazine all intersect at a common point.
Claim 5
Dependent Claim
18 words
The mechanism of claim 2 wherein the magazine blocks the fastener feeder passage except in the second position.
Claim 6
Dependent Claim
24 words
The mechanism of claim 1 including a pneumatic drive means attached to the magazine for pivoting the magazine between the first and second position.
Claim 7
Dependent Claim
18 words
The mechanism of claim 1 wherein the magazine blocks the tool bore except when in the first position.
Claim 8
Dependent Claim
17 words
The mechanism of claim 1 including mechanical biasing means for biasing magazine to one of the positions.
Claim 9
Dependent Claim
25 words
The mechanism of claim 7 including a pneumatic drive connected to the magazine for pivoting the magazine against the biasing force of the biasing means.
References Cited (Backward Citations)
US1753499A
Cited
US2506994A
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US2510137A
Cited
US3802617A
Cited
US4008842A
Cited
SU677867A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |