US3625501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforced rubber shear pad
Assignee: Individual
•
Filing: 1969-12-15
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Granted: 1971-12-07
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Expires: 1989-12-15
Abstract
Abstract An elastomeric shear pad is used to support and center the coupler arm of a railroad car. The pad, which supports the weight of the coupler arm, comprises an elastomeric cylinder the ends of which are bonded to a pair of mounting plates. The cylinder has a cavity extending in from one end thereof toward the other. The mounting plate at the open end of the cylinder is annular and the annulus communicates with this cavity. A torus or ring is secured to the inner surface of this plate, extending into and bonded to the elastomer. This torus serves to increase the bond area between the annular plate and the elastomer so that the area more nearly equals the total area of the bond between the cylinder and the other plate. The outer surface of the elastomeric cylinder contains a plurality of spaced grooves in which stiffening rings are positioned. These rings, made of steel or other high tensile strength material, serve to increase the compression resistance of the pad without adversely affecting the low shear rate thereof.
Inventors
- 👤 Richard D Hein
- 👤 Jerry D Stringfellow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:07
CPC Classifications
B; B61; B61G; B61G7/00; B61G7/10; F; F16; F16F; F16F1/00; F16F1/36; F16F1/42; F16F1/52; F16F1/54; F16F2236/00; F16F2236/12; F16F2236/123
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
140 words
A shear pad for interconnecting two spaced components for relative movement in substantially parallel planes, said pad comprising: A. a substantially cylindrical rubber body having 1. a plurality of annular grooves generally parallel to the two ends of said body and axially spaced along the outer surface thereof, and 2. an inner cavity commencing at a first end of said body and extending toward and terminating short of a second end, B. A substantially inextensible reinforcing ring disposed in each of a selected number of said grooves to increase the resistance of said body to compression, and C. a generally flat rIgid plate bonded to the surface of each of the ends of said body wherein the plate bonded to the surface of said first end includes means to increase the interface bonding area between said plate and said surface.
Claim 2
Dependent Claim
140 words
A shear pad for interconnecting two spaced components for relative movement in substantially parallel planes, said pad comprising: A. a substantially cylindrical rubber body having 1. a plurality of annular grooves generally parallel to the two ends of said body and axially spaced along the outer surface thereof, and 2. an inner cavity commencing at a first end of said body and extending toward and terminating short of a second end, B. A substantially inextensible reinforcing ring disposed in each of a selected number of said grooves to increase the resistance of said body to compression, and C. a generally flat rIgid plate bonded to the surface of each of the ends of said body wherein the plate bonded to the surface of said first end includes means to increase the interface bonding area between said plate and said surface.
Claim 3
Dependent Claim
90 words
an inner cavity commencing at a first end of said body and extending toward and terminating short of a second end, B. A substantially inextensible reinforcing ring disposed in each of a selected number of said grooves to increase the resistance of said body to compression, and C. a generally flat rIgid plate bonded to the surface of each of the ends of said body wherein the plate bonded to the surface of said first end includes means to increase the interface bonding area between said plate and said surface.
Claim 4
Dependent Claim
90 words
an inner cavity commencing at a first end of said body and extending toward and terminating short of a second end, B. A substantially inextensible reinforcing ring disposed in each of a selected number of said grooves to increase the resistance of said body to compression, and C. a generally flat rIgid plate bonded to the surface of each of the ends of said body wherein the plate bonded to the surface of said first end includes means to increase the interface bonding area between said plate and said surface.
Claim 5
Dependent Claim
18 words
The shear pad according to claim 1 wherein said means comprises a rigid torus affixed to said plate.
Claim 6
Dependent Claim
44 words
The shear pad according to claim 1 wherein said plate bonded to said first end of said body contains an opening aligned with said inner cavity, and wherein the bonding area added by said means is approximately equal to the area of said opening.
Claim 7
Dependent Claim
44 words
The shear pad according to claim 2 wherein said plate bonded to said first end of said body contains an opening aligned with said inner cavity, and wherein the bonding area added by said torus is approximately equal to the area of said opening.
Claim 8
Dependent Claim
33 words
The shear pad according to claim 1 wherein said substantially inextensible reinforcing rings are disposed in all of said grooves but the groove closest adjacent to each of the ends of said body.
Claim 9
Dependent Claim
33 words
The shear pad according to claim 2 wherein said substantially inextensible reinforcing rings are disposed in all of said grooves but the groove closest adjacent to each of the ends of said body.
Claim 10
Dependent Claim
33 words
The shear pad according to claim 3 wherein said substantially inextensible reinforcing rings are disposed in all of said grooves but the groove closest adjacent to each of the ends of said body.
Claim 11
Dependent Claim
33 words
The shear pad according to claim 4 wherein said substantially inextensible reinforcing rings are disposed in all of said grooves but the groove closest adjacent to each of the ends of said body.
Claim 12
Dependent Claim
22 words
The shear pad as defined in claim 1 wherein the outer diameter of said rubber body is less than the length thereof.
Claim 13
Dependent Claim
22 words
The shear pad as defined in claim 2 wherein the outer diameter of said rubber body is less than the length thereof.
Claim 14
Dependent Claim
22 words
The shear pad as defined in claim 3 wherein the outer diameter of said rubber body is less than the length thereof.
Claim 15
Dependent Claim
22 words
The shear pad as defined in claim 4 wherein the outer diameter of said rubber body is less than the length thereof.
Claim 16
Dependent Claim
22 words
The shear pad as defined in claim 5 wherein the outer diameter of said rubber body is less than the length thereof.
Claim 17
Dependent Claim
22 words
The shear pad as defined in claim 6 wherein the outer diameter of said rubber body is less than the length thereof.
Claim 18
Dependent Claim
22 words
The shear pad as defined in claim 7 wherein the outer diameter of said rubber body is less than the length thereof.
Claim 19
Dependent Claim
22 words
The shear pad as defined in claim 8 wherein the outer diameter of said rubber body is less than the length thereof.
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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) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |