Patent US3673927A successfully refreshed from Google Patents.
US3673927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Seal
Assignee: Individual
•
Filing: 1970-10-22
•
Granted: 1972-07-04
•
Expires: 1990-10-22
Abstract
Abstract This disclosure relates to a seal between two relatively movable parts being spaced by at least one space with a feature of the seal being the provision between the parts of a casing or cover shutting off the space and attach to not only the one part but also to the other part. In the preferred usage of the seal, the casing or cover is disposed between a piston and a cylinder and has an annular form.
Inventors
- 👤 Nils Allan Fluhr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:55
CPC Classifications
F; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/0535; F16; F16J; F16J3/00; F16J3/06; F02G2253/00; F02G2253/02; F02G2253/10; F02G2253/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
82 words
A seal between two parts movable relatively to each other and spaced from one another, characterized by providing between said parts a hollow member containing a fluid and sealing the space between the two parts, said member being secured to both of said parts, and at least one spacing element freely enclosed in said member and being elongated in said direction of relative movement to maintain the relatively movable parts spaced from each other and simultaneously to prevent collapse of said member.
Claim 2
Dependent Claim
82 words
A seal between two parts movable relatively to each other and spaced from one another, characterized by providing between said parts a hollow member containing a fluid and sealing the space between the two parts, said member being secured to both of said parts, and at least one spacing element freely enclosed in said member and being elongated in said direction of relative movement to maintain the relatively movable parts spaced from each other and simultaneously to prevent collapse of said member.
Claim 3
Dependent Claim
35 words
A seal according to claim 1, characterized in that the wall of said member is formed of a fabric at least exteriorly provided with a rubber-like material of the type including rubber and synthetic resin.
Claim 4
Dependent Claim
35 words
A seal according to claim 1, characterized in that there are a plurality of said spacing elements and said spacing elements are spaced from each other in the directions of movement of the movable parts.
Claim 5
Dependent Claim
25 words
A seal according to claim 3, characterized in that the spacing elements are maintained in a spaced condition from each other by separate retainer members.
Claim 6
Dependent Claim
69 words
A seal according to claim 4, characterized in that the retainer members are dimensioned in correspondence to the dimensions of said member so as to maintain the spacing elements at a maximum distance relative to each other in the movement direction of the parts, whereby a particularly good guiding of the parts is obtained while at the same time said member will be kept expanded and prevented from collapse.
Claim 7
Dependent Claim
53 words
A seal according to claim 4, characterized in that the spacing elements are in the form of rolling elements of the type including balls and rollers, and in that the retainer member has the character of the retainer ring of a rolling type bearing and is provided with grips for the spacing elements.
Claim 8
Dependent Claim
42 words
A seal accordiNg to any of claim 6, characterized in that the spacing elements are retained by the retainer member in at least two spaced ring rows, the ring rows being disposed in the portions of said member remote from each other.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |