Patent US4413980A successfully refreshed from Google Patents.
US4413980A
Expired / Lapsed
US
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Flexible grid coupling
Assignee: Rexnord Industries LLC
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Filing: 1981-02-24
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Granted: 1983-11-08
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Expires: 2001-02-24
Abstract
Abstract A flexible shaft coupling includes a pair of hubs connected to the shafts. Each hub has a series of peripherially spaced teeth with slots between the teeth. A grid joins the hubs and transmits torque therebetween. The grid is formed of a series of spaced, straight metal rungs held together at their ends by elastomer members.
Inventors
- 👤 Richard G. Walloch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:32
CPC Classifications
F; F16; F16D; F16D3/00; F16D3/50; F16D3/56
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
In a flexible coupling including a pair of hubs each having a plurality of axially extending teeth whose adjacent side faces define slots therebetween, and a grid joining the hubs, the improvement wherein: the grid includes a plurality of straight metal rungs received in the slots and spanning the space between the hubs, the ends of said rungs extending axially beyond the teeth of the pair of hubs, and elastomer members joining together the ends of the rungs to form a unitary structure with said rungs.
Claim 2
Dependent Claim
86 words
In a flexible coupling including a pair of hubs each having a plurality of axially extending teeth whose adjacent side faces define slots therebetween, and a grid joining the hubs, the improvement wherein: the grid includes a plurality of straight metal rungs received in the slots and spanning the space between the hubs, the ends of said rungs extending axially beyond the teeth of the pair of hubs, and elastomer members joining together the ends of the rungs to form a unitary structure with said rungs.
Claim 3
Dependent Claim
29 words
A coupling in accordance with claim 1 wherein the elastomer members each have portions which surround the axial ends of the rungs and span the space between adjacent rungs.
Claim 4
Dependent Claim
36 words
A flexible coupling in accordance with claim 1 wherein the elastomer members are each formed with portions which surround the top and bottom of the ends of the rungs and span the space between adjacent rungs.
Claim 5
Dependent Claim
91 words
A flexible shaft coupling comprising: a pair of hubs each adapted to be secured to one of the shafts to be coupled, each of said hubs having a series of teeth which define slots therebetween; and a unitary grid including a series of spaced, generally parallel metal rungs received in said slots and spanning the space between said slots, said rungs also extending beyond said slots in both directions away from said space so that their ends lie outside said slots; and an elastomer member joining the ends of said rungs.
Claim 6
Dependent Claim
91 words
A flexible shaft coupling comprising: a pair of hubs each adapted to be secured to one of the shafts to be coupled, each of said hubs having a series of teeth which define slots therebetween; and a unitary grid including a series of spaced, generally parallel metal rungs received in said slots and spanning the space between said slots, said rungs also extending beyond said slots in both directions away from said space so that their ends lie outside said slots; and an elastomer member joining the ends of said rungs.
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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) | 1986-11-07 | 1987-05-09 | 1987-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-07 | 1991-05-09 | 1991-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-07 | 1995-05-09 | 1995-11-08 | $7700.00 | Window Closed / Lapsed |