US3720418A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal assembly and method for making same
Assignee: Caterpillar Inc
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Filing: 1971-03-29
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Granted: 1973-03-13
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Expires: 1991-03-29
Abstract
Abstract A seal assembly, located in a seat provided in a housing or end cap of a hydraulic motor, for example, comprises an elastomeric seal member and a rigid, ring-like retaining member. The seal assembly serves a wiper function to clean a rod reciprocally movable through a bore in the housing or end cap. The elastomeric member is split in one place for easy placement around the rod and the retaining member is fractured into two or more pieces for easy placement around the elastomeric member and the rod. The retaining member includes means for easy removal of the seal assembly from the housing when it is replaced.
Inventors
- 👤 L Berg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3268; F16J15/3272; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49789; Y10T29/4979
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
108 words
A seal assembly, disposed on a central longitudinal axis thereof, comprising an annular, elastomeric seal member, an annular, rigid retaining member, composed of a fracturable material, circumferentially surrounding and abutting said seal member, and the circumferential continuity of said retaining member solely being interrupted by at least two fractured separation means formed through said retaining member for permitting removal thereof radially outwardly from said seal member, each of said separation means constituting a close fitting and uninterrupted fracture disposed to extend longitudinally completely through said retaining member and terminating at at least one longitudinal end thereof at a notch means formed on an end of said retaining member.
Claim 2
Dependent Claim
108 words
A seal assembly, disposed on a central longitudinal axis thereof, comprising an annular, elastomeric seal member, an annular, rigid retaining member, composed of a fracturable material, circumferentially surrounding and abutting said seal member, and the circumferential continuity of said retaining member solely being interrupted by at least two fractured separation means formed through said retaining member for permitting removal thereof radially outwardly from said seal member, each of said separation means constituting a close fitting and uninterrupted fracture disposed to extend longitudinally completely through said retaining member and terminating at at least one longitudinal end thereof at a notch means formed on an end of said retaining member.
Claim 3
Dependent Claim
108 words
A seal assembly, disposed on a central longitudinal axis thereof, comprising an annular, elastomeric seal member, an annular, rigid retaining member, composed of a fracturable material, circumferentially surrounding and abutting said seal member, and the circumferential continuity of said retaining member solely being interrupted by at least two fractured separation means formed through said retaining member for permitting removal thereof radially outwardly from said seal member, each of said separation means constituting a close fitting and uninterrupted fracture disposed to extend longitudinally completely through said retaining member and terminating at at least one longitudinal end thereof at a notch means formed on an end of said retaining member.
Claim 4
Dependent Claim
108 words
A seal assembly, disposed on a central longitudinal axis thereof, comprising an annular, elastomeric seal member, an annular, rigid retaining member, composed of a fracturable material, circumferentially surrounding and abutting said seal member, and the circumferential continuity of said retaining member solely being interrupted by at least two fractured separation means formed through said retaining member for permitting removal thereof radially outwardly from said seal member, each of said separation means constituting a close fitting and uninterrupted fracture disposed to extend longitudinally completely through said retaining member and terminating at at least one longitudinal end thereof at a notch means formed on an end of said retaining member.
Claim 5
Dependent Claim
23 words
The invention of claim 1 wherein two of said fractured separation means are formed through said retaining member at diametrically opposed locations thereon.
Claim 6
Dependent Claim
29 words
The invention of claim 1 wherein said retaining member has means forming an annular recess internally thereon, said seal member having a square shoulder portion mounted in said recess.
Claim 7
Dependent Claim
30 words
The invention of claim 3 wherein said seal member further comprises a flexible lip secured to said square shoulder portion and extending generally in the direction of said longitudinal axis.
Claim 8
Dependent Claim
18 words
The invention of claim 1 further comprising means forming a single, circumferentially angled split through said seal member.
Claim 9
Dependent Claim
25 words
The invention of claim 5 wherein said split is disposed in a plane which is in parallel and non-intersecting relationship relative to said longitudinal axis.
Claim 10
Dependent Claim
35 words
The invention of claim 1 further comprising means forming a circumferential groove on the periphery of said retaining member adapted to have a tool engage therewith to remove said seal assembly from an integrated assembly.
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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |