Patent US3976170A successfully refreshed from Google Patents.
US3976170A
Expired / Lapsed
US
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Railway brake beam head
Assignee: Evans Products Co
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Filing: 1975-06-13
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Granted: 1976-08-24
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Expires: 1995-06-13
Abstract
Abstract Railway brake beam head adapted for selective mounting of cast iron shoe or composition shoe and adapted to reject either type of shoe after having been selected for mounting the other type.
Inventors
- 👤 Irvin J. Spaeth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:09
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/02; F16D65/04; F16D65/06; F16D65/062; B; B61; B61H; B61H1/00; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
191 words
A railway brake beam head with a pair of transversely spaced toes at at least one end, said toes having faces adapted for selective mounting engagement with the rear face of either a low friction type brake shoe having a rear lug receivable between said toes or a high friction type brake shoe having a similar lug spaced lengthwise of the shoe from the location of the low friction brake shoe lug, and a pair of reinforcing crossbars extending between said toes at said one end and cast integrally therewith, said crossbars being spaced apart lengthwise of said toes at said one end for interference respectively with the lugs on the different types of shoes, either of said crossbars being selectively removable from said toes prior to application of a brake shoe to leave the other of said crossbars in place and thereby accommodate the mounting of a selected one of said types of brake shoes on the head and prevent the subsequent mounting of the other type of brake shoe on the head by interference of said other crossbar with the rear lug of the other type of brake shoe.
Claim 2
Dependent Claim
191 words
A railway brake beam head with a pair of transversely spaced toes at at least one end, said toes having faces adapted for selective mounting engagement with the rear face of either a low friction type brake shoe having a rear lug receivable between said toes or a high friction type brake shoe having a similar lug spaced lengthwise of the shoe from the location of the low friction brake shoe lug, and a pair of reinforcing crossbars extending between said toes at said one end and cast integrally therewith, said crossbars being spaced apart lengthwise of said toes at said one end for interference respectively with the lugs on the different types of shoes, either of said crossbars being selectively removable from said toes prior to application of a brake shoe to leave the other of said crossbars in place and thereby accommodate the mounting of a selected one of said types of brake shoes on the head and prevent the subsequent mounting of the other type of brake shoe on the head by interference of said other crossbar with the rear lug of the other type of brake shoe.
Claim 3
Dependent Claim
38 words
A railway brake beam head according to claim 1 wherein the faces of said crossbars are substantially flush with the faces of said toes whereby to abuttingly engage the rear faces of the selected type of brake shoes.
Claim 4
Dependent Claim
18 words
A railway brake beam head according to claim 1 formed with similar toes and crossbars at both ends.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |