Philip Y Chow, 45Sacramento, CA

4313902, Feb 2, 1982

Aug 11, 1980

6/177180

Yue-Chyou Yang - San Francisco CA
Philip Y. Chow - Orinda CA

T. Y. Lin International - San Francisco CA

B28B 2308

264228

A prestressed concrete pressure-containment vessel having one or more cavities within its external shell. The cavities, whether cylindrical or other shape, are totally contained by prestressing tendons, which apply forces to contain various pressures within the structure. By permitting and actually inducing controlled cracking of the vessel in the outer portions of the thick shell wall, one embodiment of a pressure-containment vessel relieves stresses and enhances resistance to very high internal pressures and to stresses due to high internal temperatures and steep temperature gradients.

4265066, May 5, 1981

Jan 19, 1979

6/004742

Yue-Chyou Yang - San Francisco CA
Philip Y. Chow - Orinda CA

T. Y. Lin International - San Francisco CA

E04C 326

52224

A prestressed concrete pressure-containment vessel having one or more cavities within its external shell. The cavities, whether cylindrical or other shape, are totally contained by prestressing tendons, which apply forces to contain various pressures within the structure. By permitting and actually inducing controlled cracking of the vessel in the outer portions of the thick shell wall, one embodiment of a pressure-containment vessel relieves stresses and enhances resistance to very high internal pressures and to stresses due to high internal temperatures and steep temperature gradients.

4389825, Jun 28, 1983

Aug 28, 1980

6/182015

Philip Y. Chow - Orinda CA

T. Y. Lin International - San Francisco CA

E04C 310

52224

A prestressed concrete pressure vessel capable of containing extremely high pressures in an internal cavity, 10,000 psi and higher, is constructed in such a way as to enable the application of extremely high circumferential prestressing force at the outer cylindrical surface. The extreme circumferential post-tensioning force, much greater than previously known in prestressed concrete pressure vessels, provides for containment of extreme pressure in the internal cavity, with a relatively thin-wall vessel. In order to accommodate the high circumferential post-tensioning without structural damage at the interior of the vessel, the vessel includes vertical stress relieving slots extending radially outwardly from the internal cavity surface, effective to lower peak tangential compressive stress at the cavity surface and to relocate peak stress inside the vessel wall, where the concrete is confined.

5058330, Oct 22, 1991

May 5, 1989

7/348203

Philip Y. Chow - Orinda CA

T. Y. Lin International - San Francisco CA

E04G 1104

52 211

A self-supporting pressurized or unpressurized membrane structure for lunar habitation and operation. The pressurized membrane is made up of continuous and leak-proof fabric membrane that encapsulates the entire structure and is capable of withstanding temperatures of about -190. degree. C. to about +140. degree. C. this structure has a skin preferably made up of two-spaced apart fibrous skins with a latticed web between them and foam material filling the space between the skins. Lunar soil supports the lower portions of the spherical, spheroidal, by means of a compression ring beam, or arched structure, and a lunar soil cover of up to ten feet covers the structure. The unpressurized membrane structure has a double-skin membrane arch or dome that derives its structural strength from structural foam injected into the double-skin wall of the roof.

4702052, Oct 27, 1987

Oct 20, 1986

6/921942

Philip Y. Chow - Orinda CA

T. Y. Lin International - San Francisco CA

E04C 3293
E04C 508

52224

A pressure vessel and a method for distributing the stresses in a thick-walled high-pressure vessel, so that they lie within allowable limits, by constructing the wall in a series of generally concentric layers, at least one intermediate layer of which is to be constructed before the other layers. The intermediate layer is constructed above a base, resting on it through a sliding joint. Then it is placed under an external prestressing pressure. Thereafter, that layer is secured to the base by a rigid concrete connection. The remaining layers of the wall are then constructed and are subjected to an external prestressing pressure. Preferably, stress-relieving slots are applied to the innermost layer, during its construction.

4373837, Feb 15, 1983

May 28, 1981

6/267708

Philip Y. Chow - Orinda CA

T. Y. Lin International - San Francisco CA

B63C 100

405218

In a pier having a series of spaced-apart horizontal pile caps surmounting and connecting the supporting piles together transversely of said pier, there is an integrated one-piece deck supported atop the pile caps so that it can slide thereon. A series of prestressing tendons connect the deck to the pile caps so that when a wharf is struck by a ship, the lengthening and shortening of the tendons and the sliding friction between the deck and the pile caps absorbs the impact load.

5070566, Dec 10, 1991

Oct 29, 1990

7/605267

Philip Y. Chow - Orinda CA

T. Y. Lin International - San Francisco CA

E01D 1100
E01D 1902

14 19

A hybrid bridge construction comprises a pair of piers enclosed in the earth at a fixed predetermined distance apart with a cantilever section supported on each pier. Each cantilever section comprises one or more vertical towers with a pair of inner and outer rigid compression members fixed to and extending upwardly and outwardly from the base of each tower. Outer tension members are attached to the top portions of each tower and to upper end portions of the compression members. A suspension section interconnecting the cantilever sections comprises catenary cable members attached to the upper end portions of inner compression members. A road deck extends between the piers, and vertical suspender members extend between the cable members and the road deck.

4015554, Apr 5, 1977

May 2, 1975

5/574110

Philip Y. Chow - Orinda CA

Lin Offshore Engineering, Inc. - San Francisco CA

B63B 900

114 65R

A construction and launch barge having a shallow draft hull with a construction deck supporting at its center a floatable offshore structure both during construction thereof and during the towing of the barge to the site where the offshore structure is to be installed. In order to maintain stability, a plurality of hollow column stabilizers are provided on the barge; these may be, e. g. , four, one adjacent to each corner of the barge and extending up high thereabove. A ballast compartment helps determine the desired waterline of the vessel, a mechanism being provided to displace the water therein by air or to displace the air by water. The column stabilizers are sufficiently high and occupy sufficient area for assuring the proper location of the metacenter of the fully loaded barge. The structure enables the construction of large offshore structures of concrete in relatively shallow water and enables towing the offshore structure across relatively shallow water to a desired location and then separating the barge from the offshore structure by sinking the barge to a sufficient depth, releasing the then-floatable offshore structure from the barge, and then displacing the barge away from the offshore structure. Then the barge is raised again and returned to shore.