US3648348A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Arrangement for retaining a closing or support member in a cylindrical housing
Assignee: Individual
•
Filing: 1970-04-20
•
Granted: 1972-03-14
•
Expires: 1990-04-20
Abstract
Abstract Arrangement for retaining a closing or support member in a cylindrical housing, especially in a hydraulic cylinder by a retaining wire which is disposed in a circular channel formed by circular grooves in the housing and the closing or support member. The closing or support member has a bore and the housing has an opening extending substantially radially in the plane of the grooves to permit insertion of the wire in the bore, whereupon the closing and support member is rotated thereby to pull the wire into the channel formed by the two grooves, and to retain the closing and support member in engagement with the cylindrical housing.
Inventors
- 👤 Friedrich Freimuth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 02:05
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/08; F15B15/14; F15B15/1423; F15B15/1438; F16; F16J; F16J10/00; F16J10/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/4984; Y10T29/49845; Y10T29/49849; Y10T403/00; Y10T403/70; Y10T403/7075; Y10T403/7077
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
151 words
An arrangement for retaining a closing or support member in a cylindrical housing having an opening in its sidewall, said closing or support member and said housing having circumferential grooves which together form an annular channel in a plane extending substantially perpendicular to the axis of the housing and through the opening in the housing, said closing or support member having a recess formed therein in the area of the groove and a bore extending from said recess into the interior of the closing or support member, and a wire received in said channel for retaining said closing or support member in engagement with said housing, said wire being introduced into said channel by inserting it through the opening in the housing wall into the bore in the closing or support member and rotating the closing or support member thereby to bend the wire and to pull it into the channel.
Claim 2
Dependent Claim
151 words
An arrangement for retaining a closing or support member in a cylindrical housing having an opening in its sidewall, said closing or support member and said housing having circumferential grooves which together form an annular channel in a plane extending substantially perpendicular to the axis of the housing and through the opening in the housing, said closing or support member having a recess formed therein in the area of the groove and a bore extending from said recess into the interior of the closing or support member, and a wire received in said channel for retaining said closing or support member in engagement with said housing, said wire being introduced into said channel by inserting it through the opening in the housing wall into the bore in the closing or support member and rotating the closing or support member thereby to bend the wire and to pull it into the channel.
Claim 3
Dependent Claim
43 words
An arrangement as claimed in claim 1, wherein the circular portion of the wire is longer than the channel and the free end of the wire overlaps the other end of the wire and abuts the wall of the opening in the housing.
Claim 4
Dependent Claim
23 words
An arrangement as claimed in claim 2, wherein the depth of said recess is not more than twice the diameter of the wire.
Claim 5
Dependent Claim
45 words
An arrangement as claimed in claim 1, wherein said recess extends axially from the opening in the housing to the inner end of the closing or support member thereby forming a communication path from the opening in the housing to the interior of the housing.
Claim 6
Dependent Claim
33 words
An arrangement as claimed in claim 1, wherein at least one annular seal ring surrounds the closing or support member between said recess and the outer end of the closing or support member.
Claim 7
Dependent Claim
31 words
An arrangement as claimed in claim 1, wherein at least two parallel channels are formed in the housing and closing or support members, each channel having a retaining wire disposed therein.
Claim 8
Dependent Claim
36 words
An arrangement as claimed in claim 1, wherein channel forming grooves are threads extending circumferentially at least 720* and the retaining wire disposed in the channel surrounds the closing and support member at least two times.
Claim 9
Dependent Claim
20 words
An arrangement as claimed in claim 1, wherein the closing or support member is provided with means facilitating rotation thereof.
Claim 10
Dependent Claim
46 words
An arrangement as claimed in claim 1, wherein the closing or support member has an axial opening and a bushing supported in said opening, said bore and the wire in said bore extending into said bushing for securing said bushing in said closing or support member.
Claim 11
Dependent Claim
16 words
An arrangement as claimed in claim 1, wherein said wire consists of a high-strength plastic material.
References Cited (Backward Citations)
US1873245A
Cited
US1899343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |