US3812955A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pusher device for attachment to a chain conveyor
Assignee: Schweizerische Industrie Gesellschaft
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Filing: 1973-01-15
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Granted: 1974-05-28
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Expires: 1993-01-15
Abstract
Abstract A pusher device adapted to be pivotally attached to a chain conveyor to travel, with it, between a conveying path and a support path, and to move into and out of engagement with objects on the conveying path in dependence on the contour of the support path. Each device has a tooth with object and support path engaging portions and this tooth is pivotally mounted on a pin protruding from a side of the chain, by a separate chain element.
Inventors
- 👤 G Kopp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:57
CPC Classifications
B; B65; B65G; B65G19/00; B65G19/18; B65G19/22; B65G19/24; B65G19/26; B65G19/265
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
403 words
In a conveyor having an endless roller chain disposed in a path of movement adjacent a conveying path and at least one pusher device attached to the chain for movement therewith; said pusher device including a pusher tooth and means for pivotally mounting said pusher tooth on said chain so that said tooth can be pivoted between a first position wherein a first portion of said tooth will contact objects in the conveying path and push them therealong upon movement of said chain, and a second position wherein said first portion of said tooth is withdrawn from the conveying path; and means for maintaining said tooth in said first position when it is effective and for permitting said tooth to pivot to said second position when it is ineffective; the improvement wherein: said means for pivotally mounting said tooth on said chain comprises a double chain pin attached to and forming a part of said chain, and a chain element which is substantially identical to the corresponding element of said chain, pivotally mounted on the laterally protruding portion of said double chain pin, said pusher tooth being attached to said chain element for movement therewith, said chain element including a first and a second sleeve, both having the same dimensions, said first sleeve being mounted on said protruding portion of said double chain pin, a single chain pin upon which said second sleeve is mounted, and a pair of side links, each of said side links having one end pivotally mounted on said protruding portion of said double chain pin adjacent a respective end of said first sleeve and its other end connected to a respective end of said single chain pin; said means for maintaining said tooth in a first position comprises a support path disposed adjacent said chain and against which said tooth abuts when in said first position; and said tooth is provided with an opening in the side thereof facing said support means when said tooth is in said first position, said opening having a shape such that two spaced oppositely disposed arcuately limited recesses with the same radius are provided therein, one of said recesses having a centering angle of 180* and the other of said recesses having a centering angle which exceeds a right angle by approximately 20*, said first sleeve being disposed within said first recess and said second sleeve being disposed within said second recess.
Claim 2
Dependent Claim
403 words
In a conveyor having an endless roller chain disposed in a path of movement adjacent a conveying path and at least one pusher device attached to the chain for movement therewith; said pusher device including a pusher tooth and means for pivotally mounting said pusher tooth on said chain so that said tooth can be pivoted between a first position wherein a first portion of said tooth will contact objects in the conveying path and push them therealong upon movement of said chain, and a second position wherein said first portion of said tooth is withdrawn from the conveying path; and means for maintaining said tooth in said first position when it is effective and for permitting said tooth to pivot to said second position when it is ineffective; the improvement wherein: said means for pivotally mounting said tooth on said chain comprises a double chain pin attached to and forming a part of said chain, and a chain element which is substantially identical to the corresponding element of said chain, pivotally mounted on the laterally protruding portion of said double chain pin, said pusher tooth being attached to said chain element for movement therewith, said chain element including a first and a second sleeve, both having the same dimensions, said first sleeve being mounted on said protruding portion of said double chain pin, a single chain pin upon which said second sleeve is mounted, and a pair of side links, each of said side links having one end pivotally mounted on said protruding portion of said double chain pin adjacent a respective end of said first sleeve and its other end connected to a respective end of said single chain pin; said means for maintaining said tooth in a first position comprises a support path disposed adjacent said chain and against which said tooth abuts when in said first position; and said tooth is provided with an opening in the side thereof facing said support means when said tooth is in said first position, said opening having a shape such that two spaced oppositely disposed arcuately limited recesses with the same radius are provided therein, one of said recesses having a centering angle of 180* and the other of said recesses having a centering angle which exceeds a right angle by approximately 20*, said first sleeve being disposed within said first recess and said second sleeve being disposed within said second recess.
Claim 3
Dependent Claim
81 words
An arrangement as defined in claim 1 wherein: the chain pin of said chain which precedes said double chain pin in the direction of movement of said chain is a further double chain pin; and said tooth has a second portion which, in said first position of said tooth, abuts against the portion of said further double chain pin which protrudes from the side of said chain, thereby limiting the pivotal movement of said tooth in a first direction of rotation.
Claim 4
Dependent Claim
54 words
An arrangement as defined in claim 1, further comprising a resilient arm disposed on said tooth adjacent said second recess and extending along that portion of said second recess which exceeds the right angle, said arm being movable to permit the introduction of said second sleeve into said second recess and the removal thereof.
Claim 5
Dependent Claim
81 words
An arrangement as defined in claim 1 wherein: the chain pin of said chain which precedes said double chain pin in the direction of movement of said chain is a further double chain pin; and said tooth has a second portion which, in said first position of said tooth, abuts against the portion of said further double chain pin which protrudes from the side of said chain, thereby limiting the pivotal movement of said tooth in a first direction of rotation.
Claim 6
Dependent Claim
41 words
An arrangement as defined in claim 4, further comprising a separate pair of side links which are identical to the corresponding side links of said chain, said separate pair of side links connecting the protruding portions of said double chain pins.
Claim 7
Dependent Claim
103 words
An arrangement as defined in claim 1 wherein: said tooth is mounted on said double chain pin for pivotal movement in a vertical plane; said support path for maintaining said tooth in said first position is disposed below said chain; and said tooth has a further portion which is located at the rear of said tooth, in the sense of the direction of movement of said closed chain, said further portion contacting said support path when said tooth is in its said first Position, the center of gravity of said tooth and said chain element being disposed rearwardly of said double chain pin.
Claim 8
Dependent Claim
103 words
An arrangement as defined in claim 1, wherein said tooth is mounted on said double chain pin for pivotal movement in a horizontal plane, and said support path for maintaining said tooth in said first position is located on one side of said chain and against which a portion of said tooth abuts when said tooth is in said first position; and further comprising resilient means biasing said tooth into contact with said support path when said tooth is in said first position, whereby said resilient means will cause said tooth to pivot to said second position when said supporting path is interrupted.
References Cited (Backward Citations)
US300247A
Cited
US1593501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-05-27 | 1977-11-26 | 1978-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-27 | 1981-11-26 | 1982-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-27 | 1985-11-26 | 1986-05-28 | $7700.00 | Window Closed / Lapsed |