US3763971A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tiltproof damping apparatus
Assignee: K Tron Patent AG
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Filing: 1972-05-09
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Granted: 1973-10-09
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Expires: 1992-05-09
Abstract
Abstract A tiltproof damping apparatus is comprised of a pot, a piston rod and a piston. A closure member is provided for one end of the pot and is fitted therein with slight clearance. The piston rod extends through an aperture in the closure member with limited clearance therebetween. Liquid means is received within the pot and a meniscus of the liquid means is formed on the outside of the closure member about each clearance.
Inventors
- 👤 K Saner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:58
CPC Classifications
F; F16; F16F; F16F9/00; F16F9/10; F16F9/32; F16F9/36; G; G01; G01G; G01G23/00; G01G23/06; G01G23/08; G01L; G01L1/00; G01L1/26
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
142 words
A tiltproof damping apparatus comprising a pot containing a viscous liquid, a piston in the pot, a piston rod attached to the piston, the piston and rod being movable in the axial direction of the piston rod, and a closure member which is fitted into the pot with a first clearance and has a central opening with a second clearance through which the piston rod passes, in which the clearance between the closure member and the pot is smaller in the direction of the rod axis than in the direction perpendicular to the rod axis, the clearance around the piston rod in the direction perpendicular to the rod axis is not greater than the clearance around the closure member in the direction of the rod axis, and each clearance contains a meniscus of the liquid on the outside of the closure member.
Claim 2
Dependent Claim
142 words
A tiltproof damping apparatus comprising a pot containing a viscous liquid, a piston in the pot, a piston rod attached to the piston, the piston and rod being movable in the axial direction of the piston rod, and a closure member which is fitted into the pot with a first clearance and has a central opening with a second clearance through which the piston rod passes, in which the clearance between the closure member and the pot is smaller in the direction of the rod axis than in the direction perpendicular to the rod axis, the clearance around the piston rod in the direction perpendicular to the rod axis is not greater than the clearance around the closure member in the direction of the rod axis, and each clearance contains a meniscus of the liquid on the outside of the closure member.
Claim 3
Dependent Claim
79 words
An apparatus according to claim 1 in which the pot is closed by a disc formed with a central hole and the closure member comprises an elongate sleeve having two spaced flanges, the edge of the central hole lying between the flanges and forming, with these flanges, the first clearance in which the first meniscus is formed, the piston rod extending through the sleeve and, with the sleeve, forming the second clearance in which the second meniscus is formed.
Claim 4
Dependent Claim
87 words
An apparatus according to claim 1 in which the pot has a recessed edge, comprising an annular collar seated in the recess, the recess and the collar defining an annular groove in which the outer edge of the closure member is contained, the closure member consisting of a disc having a central opening, the first meniscus lying between the disc and the inner surface of the annular collar, and the second meniscus lying in the gap between the edge of the central opening and the piston rod.
Claim 5
Dependent Claim
30 words
An apparatus according to claim 3 in which the closure member is formed with an inner ring and the second meniscus is located between the ring and the piston rod.
Claim 6
Dependent Claim
29 words
An apparatus according to claim 4 in which the closure member has within the first clearance an outer ring and the cylindrical inner end face of the annular collar.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |