US3871501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicone putty retarder
Assignee: Individual
•
Filing: 1973-09-26
•
Granted: 1975-03-18
•
Expires: 1993-09-26
Abstract
Abstract A retarder roller for limiting the speed of a free runing load on an inclined conveyor. The roller comprises a stator and a rotor rotatably mounted on the stator and forming a housing for the stator. The housing is filled with silicone putty. The stator and housing are provided with vanes for cutting through and displacing the putty as the housing is rotated.
Inventors
- 👤 Andrew T Kornylak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:50
CPC Classifications
B; B65; B65G; B65G13/00; B65G13/075
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
A conveyor comprising a pair of laterally spaced rails and a series of rollers extending between said rails for supporting a load, at least some of said rollers being retarder rollers each of which comprises, a stator fixed to the rails, a rotor surrounding the stator and forming an enclosed housing having walls, silicone putty in the housing, and means on the rotor and stator for deforming the material, comprising vanes on the stator and means on all the walls of the housing for holding the putty for rotation therewith, the vanes on the stator comprising members extending radially into the putty, each having a wedge shaped portion presenting a sharp edge opposite to the direction of rotation of the rotor and putty, the edges of consecutive banes being on opposite sides of a common plane normal to the rotor axis.
Claim 2
Dependent Claim
141 words
A conveyor comprising a pair of laterally spaced rails and a series of rollers extending between said rails for supporting a load, at least some of said rollers being retarder rollers each of which comprises, a stator fixed to the rails, a rotor surrounding the stator and forming an enclosed housing having walls, silicone putty in the housing, and means on the rotor and stator for deforming the material, comprising vanes on the stator and means on all the walls of the housing for holding the putty for rotation therewith, the vanes on the stator comprising members extending radially into the putty, each having a wedge shaped portion presenting a sharp edge opposite to the direction of rotation of the rotor and putty, the edges of consecutive banes being on opposite sides of a common plane normal to the rotor axis.
Claim 3
Dependent Claim
15 words
A conveyor according to claim 1 wherein an elastomeric tire is mounted on the rotor.
Claim 4
Dependent Claim
155 words
A conveyor comprising a pair of laterally spaced rails and a series of rollers extending between said rails for supporting a load, at least some of said rollers being retarder rollers each of which comprises, a stator fixed to the rails, a rotor surrounding the stator and forming an enclosed housing having walls, silicone putty in the housing, and means on the rotor and stator for deforming the material, comprising vanes on the stator and means on all the walls of the housing for holding the putty for rotation therewith, the vanes on the stator comprising members extending radially into the putty, each having a wedge-shaped portion presenting a sharp edge opposite to the direction of rotation of the rotor and putty, the vanes being rhomboids with the acute angles extending circumferentially, the edges defined by the acute angles on consecutive vanes being on opposite sides of a common plane normal to the rotor axis.
Claim 5
Dependent Claim
155 words
A conveyor comprising a pair of laterally spaced rails and a series of rollers extending between said rails for supporting a load, at least some of said rollers being retarder rollers each of which comprises, a stator fixed to the rails, a rotor surrounding the stator and forming an enclosed housing having walls, silicone putty in the housing, and means on the rotor and stator for deforming the material, comprising vanes on the stator and means on all the walls of the housing for holding the putty for rotation therewith, the vanes on the stator comprising members extending radially into the putty, each having a wedge-shaped portion presenting a sharp edge opposite to the direction of rotation of the rotor and putty, the vanes being rhomboids with the acute angles extending circumferentially, the edges defined by the acute angles on consecutive vanes being on opposite sides of a common plane normal to the rotor axis.
Claim 6
Dependent Claim
18 words
A conveyor as defined in claim 3 further including a tire of elastomeric material mounted on the rotor.
Claim 7
Dependent Claim
185 words
A conveyor comprising a pair of laterally spaced rails and a series of rollers extending between said rails for supporting a load, at least some of said rollers being retarder rollers each of which comprises, a cylindrical housing member closed at its ends, an inner axially extending member within the housing member having end portions extending through the ends of the housing member to permit relative rotation of the members, a semi-solid material within the housing member having dilatant fluid flow characteristics, the inner surface of the housing member being provided with means for engaging and retaining the material against rotational movement relative thereto, and angularly spaced blades on the inner member within the housing member projecting substantially radially with respect thereto into the material, said blades having wedge-shaped portions with a sharp edge thereof facing the path of rotation of the members for slicing through the material during the relative rotation of the members, and means for securing one of said members to the rails, wherein said sharp edges on consecutive vanes are on opposite sides of a common plane normal to said axis.
Claim 8
Dependent Claim
185 words
A conveyor comprising a pair of laterally spaced rails and a series of rollers extending between said rails for supporting a load, at least some of said rollers being retarder rollers each of which comprises, a cylindrical housing member closed at its ends, an inner axially extending member within the housing member having end portions extending through the ends of the housing member to permit relative rotation of the members, a semi-solid material within the housing member having dilatant fluid flow characteristics, the inner surface of the housing member being provided with means for engaging and retaining the material against rotational movement relative thereto, and angularly spaced blades on the inner member within the housing member projecting substantially radially with respect thereto into the material, said blades having wedge-shaped portions with a sharp edge thereof facing the path of rotation of the members for slicing through the material during the relative rotation of the members, and means for securing one of said members to the rails, wherein said sharp edges on consecutive vanes are on opposite sides of a common plane normal to said axis.
Claim 9
Dependent Claim
14 words
A conveyor according to claim 5 wherein the wedge-shaped portions are of rhomboidal shape.
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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) | 1978-03-17 | 1978-09-16 | 1979-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-17 | 1982-09-16 | 1983-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-17 | 1986-09-16 | 1987-03-18 | $7700.00 | Window Closed / Lapsed |