US3795199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Track gate structure
Assignee: Cincinnati Butchers Supply Co
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Filing: 1971-08-10
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Granted: 1974-03-05
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Expires: 1991-08-10
Abstract
Abstract The track gate structure comprises an obliquely movable track section durably supported for movement to operative and inoperative positions, the purpose being to selectively interrupt continuity of an overhead conveyor track which passes through a doorway, so that closure means for the doorway may be moved to a fully closed position without interference from the conveyor track; said structure including simple and reliable safety means automatically operative to preclude accidental derailment of a conveyor trolley at the movable track section.
Inventors
- 👤 R Herzog
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:14
CPC Classifications
B; B65; B65G; B65G9/00; B65G9/008; A; A22; A22B; A22B7/00; A22B7/001
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
180 words
A track structure for guiding a succession of trolleys through a chamber access opening, and comprising in combination: a pair of fixed aligned track sections separated endwise to provide a gap, and a movable track section selectively shiftable to operative and inoperative positions for closing and opening said gap, respectively; said track sections each comprising a metallic bar having flat vertical sides and an upper edge, said upper edges adapted to support thereon the wheel of a trolley movable along the length of said track sections; means supporting the fixed aligned track sections to project toward the chamber access opening transversely of the plane of said opening, with the gap located at least partly within said opening; means mounting the movable track section upon one of the fixed track sections for shifting movement of the movable section to an inoperative position at which said movable section is located substantially to one side of a vertical plane which includes a vertical side of the fixed track sections; and means for shifting the movable track section to the operative and inoperative positions.
Claim 2
Dependent Claim
180 words
A track structure for guiding a succession of trolleys through a chamber access opening, and comprising in combination: a pair of fixed aligned track sections separated endwise to provide a gap, and a movable track section selectively shiftable to operative and inoperative positions for closing and opening said gap, respectively; said track sections each comprising a metallic bar having flat vertical sides and an upper edge, said upper edges adapted to support thereon the wheel of a trolley movable along the length of said track sections; means supporting the fixed aligned track sections to project toward the chamber access opening transversely of the plane of said opening, with the gap located at least partly within said opening; means mounting the movable track section upon one of the fixed track sections for shifting movement of the movable section to an inoperative position at which said movable section is located substantially to one side of a vertical plane which includes a vertical side of the fixed track sections; and means for shifting the movable track section to the operative and inoperative positions.
Claim 3
Dependent Claim
29 words
The combination as defined by claim 1, wherein the weight of the movable track section is utilized in achieving final placement of the movable track section into operative position.
Claim 4
Dependent Claim
32 words
The combination as defined by claim 1, wherein said means for shifting the movable track section to the operative position is controlled by the trolley in advancing toward the chamber access opening.
Claim 5
Dependent Claim
28 words
The combination as defined by claim 3, wherein the means for shifting the movable track section to the inoperative position is free of control by the trolley advancement.
Claim 6
Dependent Claim
19 words
The combination as defined by claim 4, wherein the last mentioned means is controllable at will by an attendant.
Claim 7
Dependent Claim
31 words
The combination as deFined by claim 1, wherein the movable track section in the inoperative position is disposed wholly to one side of the mean plane of a fixed track section.
Claim 8
Dependent Claim
31 words
The combination as defined by claim 1, wherein the mounting means for the movable track section includes a supporting pivot shaft whose axis is disposed obliquely to the vertical plane aforesaid.
Claim 9
Dependent Claim
19 words
The combination as defined by claim 7, wherein the obliquity of said axis to said vertical plane approximates 45*.
Claim 10
Dependent Claim
60 words
The combination as defined by claim 3, wherein the means last mentioned includes an elongate trip lever pivoted intermediate its ends upon said one fixed track section, said trip lever having a heel end to be struck and moved by an advancing trolley, and a toe end movable to strike and impel the movable track section toward the operative position.
Claim 11
Dependent Claim
66 words
The combination as defined by claim 9, wherein the mounting means for the movable track section includes a supporting pivot shaft whose axis is disposed obliquely to the vertical plane aforesaid, said shaft axis being located so that the center of gravity of the movable track section in moving to the fully inoperative position thereof, passes beyond a dead center with respect to the shaft axis.
Claim 12
Dependent Claim
39 words
The combination as defined by claim 10, wherein the toe end of the trip lever limits the extent to which the center of gravity of the movable track section may pass dead center in reaching the inoperative position aforesaid.
Claim 13
Dependent Claim
27 words
The combination as defined by claim 10, wherein the movable track section when operative, is out of striking range of the toe end of the trip lever.
Claim 14
Dependent Claim
105 words
The combination as defined by claim 1, wherein said last mentioned means includes: a pivot shaft supporting the movable track section upon said one fixed section, said pivot shaft having an axis disposed obliquely to the vertical plane aforesaid; an actuating lever fixed relative to the movable track section for swinging movement therewith; an elongate trip lever pivoted intermediate its ends upon said one fixed track section, said trip lever having a heel end to be struck and moved by an advancing trolley, and a toe end movable to strike and move said actuating lever for inpelling the movable track section toward the operative position.
Claim 15
Dependent Claim
62 words
The combination as defined by claim 13, wherein the oblique pivot shaft axis is located so that the center of gravity of the movable track section in moving to the fully inoperative position thereof, passes beyond a dead center with respect to the shaft axis, placing the actuating lever in the path of movement of the toe end of the trip lever.
Claim 16
Dependent Claim
37 words
The combination as defined by claim 14, wherein the heel end of the trip lever in the operative position of the movable track section, is out of striking range of the toe end of the trip lever.
Claim 17
Dependent Claim
24 words
The combination as defined by claim 15, wherein the means for shifting the movable track section to the inoperative position, includes said actuating lever.
Claim 18
Dependent Claim
24 words
The combination as defined by claim 13, wherein the means for shifting the movable track section to the inoperative position, includes said actuating lever.
Claim 19
Dependent Claim
33 words
The combination as defined by claim 17, wherein the actuating lever in the operative position of the movable track section, is out of striking range of the toe end of the trip lever.
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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) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |