US3883040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatically operable gating mechanism
Assignee: Individual
•
Filing: 1973-10-25
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Granted: 1975-05-13
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Expires: 1993-10-25
Abstract
Abstract A pneumatic gating mechanism which comprises a spool valve movable between two positions. In one position of the spool valve a supply line for gated items such as screws is connected to a delivery line and in the other position an air feed line is connected to the delivery line to blow said gated items therealong. A gate in said supply line is connected to the spool valve and opens and closes on movement of the spool valve. The gating mechanism may be combined with a pneumatically operable tool such as a screw driver and the pneumatic circuits of tool and gating mechanism linked so that items are gated only when the tool is not operating.
Inventors
- 👤 Peter Martin Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:59
CPC Classifications
B; B65; B65G; B65G51/00; B65G51/02; B23; B23P; B23P19/00; B23P19/001; B23P19/003; B23Q; B23Q7/00; B23Q7/16; B25; B25B; B25B23/00; B25B23/02; B25B23/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
188 words
A pneumatically operable feed and gating mechanism for items having a head portion and a shank portion, comprising a spool valve movable between two positions in response to pneumatic pressure, a supply line for feeding said items to be gated to the mechanism, a delivery line spaced from said supply line along the axis of said spool valve through which said gated itmes are delivered from the mechanism, an air feed line, the spool valve being constructed with axially spaced ports such that in one position one of said ports connects the air feed line to the delivery line and such that in the other position the other of said ports containing one of said items is connected to the delivery line and the air feed line is closed, and a gating mechanism movable with said spool valve and comprising coaxially aligned rods extending from each end of said spool and defining an inclined slot between the free ends of said rods to permit one of said items to be delivered from the supply line to the delivery line when The spool valve moves into said other position.
Claim 2
Dependent Claim
188 words
A pneumatically operable feed and gating mechanism for items having a head portion and a shank portion, comprising a spool valve movable between two positions in response to pneumatic pressure, a supply line for feeding said items to be gated to the mechanism, a delivery line spaced from said supply line along the axis of said spool valve through which said gated itmes are delivered from the mechanism, an air feed line, the spool valve being constructed with axially spaced ports such that in one position one of said ports connects the air feed line to the delivery line and such that in the other position the other of said ports containing one of said items is connected to the delivery line and the air feed line is closed, and a gating mechanism movable with said spool valve and comprising coaxially aligned rods extending from each end of said spool and defining an inclined slot between the free ends of said rods to permit one of said items to be delivered from the supply line to the delivery line when The spool valve moves into said other position.
Claim 3
Dependent Claim
28 words
A mechanism as claimed in claim 1, and further comprising a valve operable to close the air feed line when said spool valve is in said other position.
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) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |