US3622072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure installation method
Assignee: Japan National Railways
•
Filing: 1969-06-16
•
Granted: 1971-11-23
•
Expires: 1989-06-16
Abstract
Abstract A flexible bag is interposed between a concrete slab bearing track rails and a base structure of a railway road bed, relative to which the slab is temporarily held apart, and then fluid cement mortar is fed into the bag to infate the same and form a pliable, bag-confined mass of mortar which snugly fits the space between the slab and base structue and, upon hardening, forms a strong and firm member whereby the slab is installed on the base structure.
Inventors
- 👤 Kentaro Matsubara
- 👤 Yutaka Satoh
- 👤 Yoshiro Higuchi
- 👤 Shigeru Tamura
- 👤 Yasuo Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:00
CPC Classifications
E; E04; E04G; E04G21/00; E04G21/14; E01; E01B; E01B1/00; E01B1/002; E01B29/00; E01B29/005; E01B29/06; E01B3/00; E01B3/28; E01B3/38
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
189 words
A method of installation of an upper structure on and in a specific position relative to a lower base structure, which comprises, in combination, the steps of temporarily holding said upper structure immovably in said position; inserting a resilient plate under said upper structure thereby to establish an elasticity between said upper structure and base structure; interposing a flexible bladderlike bag between said resilient plate and base structure to form a uniform support layer between said structures, said bag containing a hardenable fluid substance therein and being provided with a portion projecting outward of said upper structure; squeezing said bag at said projecting portion thereof so as to compel said fluid substance to be squeezed toward part of the bag under said upper structure thereby to inflate said part of the bag and form a pliable, bagconfined mass of the fluid substance in firm contact with said resilient plate and lower base structure; and causing said fLuid substance to harden thereby to cause the upper structure to be supported firmly on the lower structure through said resilient plate and said mass of the substance thus interposed and hardened therebetween.
Claim 2
Independent Claim
189 words
A method of installation of an upper structure on and in a specific position relative to a lower base structure, which comprises, in combination, the steps of temporarily holding said upper structure immovably in said position; inserting a resilient plate under said upper structure thereby to establish an elasticity between said upper structure and base structure; interposing a flexible bladderlike bag between said resilient plate and base structure to form a uniform support layer between said structures, said bag containing a hardenable fluid substance therein and being provided with a portion projecting outward of said upper structure; squeezing said bag at said projecting portion thereof so as to compel said fluid substance to be squeezed toward part of the bag under said upper structure thereby to inflate said part of the bag and form a pliable, bagconfined mass of the fluid substance in firm contact with said resilient plate and lower base structure; and causing said fLuid substance to harden thereby to cause the upper structure to be supported firmly on the lower structure through said resilient plate and said mass of the substance thus interposed and hardened therebetween.
Claim 3
Dependent Claim
84 words
A method of installation as set forth in claim 1, in which said squeezing is carried out in two steps comprising a first step including the pressing of a first device for applying pressure to an outermost portion of said projecting bag portion, and a second step including the pressing of a second device for applying pressure to an inner portion of said projecting bag portion to urge said hardenable fluid within said projecting portion to a position between said resilient plate and base.
Claim 4
Dependent Claim
52 words
A method of installation as set forth in claim 1, in which said step of inserting a resilient plate is performed by placing a rubber plate beneath said upper structure, and said step of interposing a flexible bag between said plate and base is performed by disposing a synthetic resin bag therebetween.
Claim 5
Dependent Claim
47 words
A method of installation as set forth in claim 1, further comprising the step of selecting said hardenable fluid substance from the group consisting of rapid hardening cement mortars, Portland cement mortars having an accelerator mixed therein, resin mortars, and cement mortars having reinforced materials mixed therein.
Claim 6
Independent Claim
159 words
A method of installation of an upper structure on and in a specific position relative to a lower base structure, which comprises the steps of temporarily holding said upper structure immovably in said position; interposing a flexible bladderlike bag between said upper structure and base structure to form a uniform support layer between said structures, said bag containing a hardenable fluid substance therein and being provided with a portion projecting outward of said upper structure; squeezing said bag at said projecting portion thereof so as to compel said fluid substance to be squeezed toward part of the bag under said upper structure thereby to inflate said part of the bag and form a pliable, bag-confined mass of the fluid substance in firm contact with said upper and lower structures; and causing said fluid substance to harden thereby to cause the upper structure to be supported firmly on the lower structure through said bag-confined mass thus interposed and hardened therebetween.
Claim 7
Independent Claim
159 words
A method of installation of an upper structure on and in a specific position relative to a lower base structure, which comprises the steps of temporarily holding said upper structure immovably in said position; interposing a flexible bladderlike bag between said upper structure and base structure to form a uniform support layer between said structures, said bag containing a hardenable fluid substance therein and being provided with a portion projecting outward of said upper structure; squeezing said bag at said projecting portion thereof so as to compel said fluid substance to be squeezed toward part of the bag under said upper structure thereby to inflate said part of the bag and form a pliable, bag-confined mass of the fluid substance in firm contact with said upper and lower structures; and causing said fluid substance to harden thereby to cause the upper structure to be supported firmly on the lower structure through said bag-confined mass thus interposed and hardened therebetween.
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |