US4819916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System of replaceable road railing
Assignee: Individual
•
Filing: 1988-01-27
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Granted: 1989-04-11
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Expires: 2008-01-27
Abstract
Abstract This invention, being an improvement on the kind of fixed road railing adopted widely now, provides a new system of replaceable road railing comprising mainly of an underground sleeve, into which a pillar is inserted, a pillar with blades at its bottom, and a device inside the pillar which, by means of its upward and downward movement, controls the expanding and contracting movement of the blades of the pillar and, as a result, causes the blades to tighten against or loosen from the inner surface of the sleeve and, thus the pillar can be easily inserted into the sleeve or taken out from it thereby.
Inventors
- 👤 Kwou Wun-chung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:02
CPC Classifications
E; E01; E01F; E01F15/00; E01F15/02; E01F15/04; E01F15/0476; E01F9/00; E01F9/60; E01F9/623; E01F9/631; E01F9/635
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
367 words
A replaceable road railing system comprising: (a) a sleeve member extending from a lower end beneath a ground surface to an upper end adjacent said ground surface, said sleeve member having inclined frame members secured to a lower portion of said sleeve member beneath said ground surface, said frame members being encased in cement; (b) a substantially hollow tubular pillar member insertable into said sleeve member, said pillar member having a pair of concavities formed within an external surface, one of said concavities being located above said ground surface and the other of said concavities being located below said ground surface, said pillar member having a lower section defining a plurality of blade members, and an upper section having a cover member and a block member fixedly secured thereto, said block member for interfacing with and coupling an undulating steel plate member to said pillar member; and, (c) replacement and adjustment means located within said pillar member for providing securement to and removal of said pillars from said sleeve member, said replacement and adjustment means including an extended threaded rod, said threaded rod having an upper end defining a rod head member and a lower end located within said lower section of said pillar member, said threaded rod being threadedly coupled to an upper fixing block member located within said pillar member above said concavity formed above said ground surface and to a lower fixing block member located within said pillar member below said concavity formed below said ground surface, said upper and lower fixing block members being displaceably constrained by respective concavities, said lower end of said threaded rod being secured to a wedge member having a truncated cone contour, said wedge member being displaced upwardly when said rod head member is rotated in a first direction for displacing said blade members in an outward radial direction against an inner wall of said sleeve member for securing said pillar member to said sleeve member, said wedge member being displaced downwardly when said rod head member is rotated in a second direction for releasing said blade members from said inner wall of said sleeve member to allow said pillar member to be removed from said sleeve member.
Claim 2
Dependent Claim
367 words
A replaceable road railing system comprising: (a) a sleeve member extending from a lower end beneath a ground surface to an upper end adjacent said ground surface, said sleeve member having inclined frame members secured to a lower portion of said sleeve member beneath said ground surface, said frame members being encased in cement; (b) a substantially hollow tubular pillar member insertable into said sleeve member, said pillar member having a pair of concavities formed within an external surface, one of said concavities being located above said ground surface and the other of said concavities being located below said ground surface, said pillar member having a lower section defining a plurality of blade members, and an upper section having a cover member and a block member fixedly secured thereto, said block member for interfacing with and coupling an undulating steel plate member to said pillar member; and, (c) replacement and adjustment means located within said pillar member for providing securement to and removal of said pillars from said sleeve member, said replacement and adjustment means including an extended threaded rod, said threaded rod having an upper end defining a rod head member and a lower end located within said lower section of said pillar member, said threaded rod being threadedly coupled to an upper fixing block member located within said pillar member above said concavity formed above said ground surface and to a lower fixing block member located within said pillar member below said concavity formed below said ground surface, said upper and lower fixing block members being displaceably constrained by respective concavities, said lower end of said threaded rod being secured to a wedge member having a truncated cone contour, said wedge member being displaced upwardly when said rod head member is rotated in a first direction for displacing said blade members in an outward radial direction against an inner wall of said sleeve member for securing said pillar member to said sleeve member, said wedge member being displaced downwardly when said rod head member is rotated in a second direction for releasing said blade members from said inner wall of said sleeve member to allow said pillar member to be removed from said sleeve member.
Claim 3
Dependent Claim
47 words
The replaceable road railing system as recited in claim 1 including a pair of block hook members fixedly secured to said block member and extending therefrom, each of said block hook members for releasable coupling to a respective cable member extending adjacent said undulating steel plate member.
Claim 4
Dependent Claim
33 words
The replaceable road railing system as recited in claim 1 where said sleeve member includes a protruding hook member forming an upper end thereof for anchoring said sleeve member below said ground surface.
Claim 5
Dependent Claim
40 words
The replaceable road railing system as recited in claim 1 including an adjustment block of predetermined height insertable into said sleeve member, said pillar member being raised by said predetermined height for adjusting to a raising of said road surface.
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) | 1992-04-10 | 1992-10-10 | 1993-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-04-10 | 1996-10-10 | 1997-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-04-10 | 2000-10-10 | 2001-04-11 | $7700.00 | Window Closed / Lapsed |