Source: http://www.google.se/patents/US5682926
Timestamp: 2013-05-22 21:10:56
Document Index: 510411711

Matched Legal Cases: ['Application No. 497', 'arts 2', 'arts 2', 'art 2', 'art 2', 'art 2', 'art 2']

Patent US5682926 - Channel system with a cross-section with rounded corners and method for ... - Google PatentS�k Bilder Kartor Play YouTube Nyheter Gmail Drive Mer » Avancerad patents�kning | Webbhistorik | Logga in Avancerad patents�kning PatentA thin wall system for providing a channel includes a plurality of planar basic parts for forming planar wall parts of the system, and a plurality of arcuate basic parts. The arcuate basic parts extend in a longitudinal direction and curve in a transverse direction for forming arched wall parts of the...http://www.google.se/patents/US5682926?utm_source=gb-gplus-sharePatent US5682926 - Channel system with a cross-section with rounded corners and method for manufacturing elements therein PublikationsnummerUS5682926 ATyp av kung�relseBeviljande Ans�kningsnummer08/284,598 Publiceringsdatum4 nov 1997 Registreringsdatum11 feb 1993 Prioritetsdatum13 feb 1992�ven publicerat somEP0628143A1EP0628143B1WO1993016313A1 UppfinnareJukka Perttula Ursprunglig innehavarePerttula; Jukka USA-klassificering138/157138/156174/101 Internationell klassificeringF16L9/00F16L9/22 Kooperativ klassningF16L9/003 Europeisk klassificeringF16L9/00BH�nvisningarCitat fr�n patent (13) H�nvisningar finns i f�ljande patent (3)Externa l�nkarUSPTO �verl�telse av �gander�tt till patent som har registrerats av USPTO EspacenetChannel system with a cross-section with rounded corners and method for manufacturing elements thereinUS 5682926 A Sammanfattning A thin wall system for providing a channel includes a plurality of planar basic parts for forming planar wall parts of the system, and a plurality of arcuate basic parts. The arcuate basic parts extend in a longitudinal direction and curve in a transverse direction for forming arched wall parts of the system. The arched wall parts are attached to the planar wall parts along their edges in the longitudinal direction for forming straight segments of the channel which includes rounded corners provided by the arched wall parts.
I claim: 1. A thin wall system for providing a channel, comprising: a plurality of planar basic parts for forming planar wall parts of said system, a plurality of arcuate basic parts which extend in a longitudinal direction and curve in a transverse direction for forming arched wall parts of said system, said arched wall parts being attached to said planar wall parts along their edges in the longitudinal direction for forming straight segments of said channel which includes rounded corners provided by said arched wall parts, and at least one corner piece for joining two straight segments of said channel at an angle with each other, said at least one corner piece comprising: said planar basic parts attached to said arcuate basic parts to form walls, and curved basic pieces attached to said planar and arcuate basic parts to form corners in said corner piece.
2. The system according to claim 1, wherein said curved basic pieces comprise pieces for forming an inside corner and an outside corner in said corner piece.
6. A method of manufacturing a thin wall channel system, comprising: combining a multiple of planar basic parts to form planar wall parts of said system, combining a multiple of arcuate bask parts which extend in a longitudinal direction and curve in a transverse direction to form arched wall parts of said system, attaching said arched wall parts to said planar wall parts along edges in the longitudinal direction to form straight segments of a channel which includes rounded corners provided by said arched wall parts, and joining two straight segments at an angle with each other via a corner piece by attaching said planar basic parts to said arcuate basic parts to form walls in said corner piece and by attaching curved basic pieces to said planar basic parts and said arcuate basic parts to form corners in said corner piece.
7. A thin-walled channel system with rounded corners comprising: first basic parts having planar shape, second basic parts having cylindrical shape and arched cross-section, straight channel elements of the channel system formed by joining together said first and second basic parts along their longitudinal edges to provide straight channel elements having a cross-section with rounded corners formed by the arched cross-section of the second basic parts, and corner pieces for accomplishing a joint between at least two of said straight channel elements having deviating longitudinal directions, each corner piece comprising: first basic parts having planar shape, second basic parts having cylindrical shape and arched cross-section, and third and fourth basic parts having substantially curved shape, said corner piece having corners and being formed by joining the first and second basic parts together at their edges and by joining the third and fourth basic parts to at least some of the corners of the corner piece.
Finnish Patent Application No. 497/71 presents a method and device for connecting elements in ventilation systems with high requirements for tightness. The method presented in the publication can also be applied for manufacturing elements of a channel system with a cross-section having rounded corners. The publication relates to manufacturing elements of separate wall surfaces, their edges being equipped with joint arrangements. The joint arrangements are formed by a U-shaped joint part at the edge of another wall surface, the edge of the opposite wall surface being placed therebetween. The publication discloses applications with a cross-section with rounded corners of a straight element, a T-branch and an angle of 90 placed against each other. The joint solution presented in the publication is useful in principle, bun it does not, however, offer a comprehensive solution for manufacturing elements with different shapes and sizes.
FIG. 2a shows a corner piece in a 90
FIG. 3 shows a corner piece in a 45
A corner piece at a 90 view in FIG. 2b. The edges of the internal angle 3 of the piece are formed by third basic parts 2b joining the two longitudinal directions s1, s2 in an arch and arranged in the transverse direction in an arch. These third basic parts 2b are connected at their first edges to a second basic part 2a and at their second edges to side plates 1a'.
As shown in FIGS. 2a and 2b, one edge of each third basic part 2b to be joined with a side plate 1a' is arranged to join the plane t defined by the side plate 1a' in an arch. Further, this edge is formed by two flat edge parts in angles deviating from each other in the plane t. The angle between the longitudinal directions s1, s2 being 90 question, it is most advantageous to elect the angle between the straight edge parts also to be a right angle. Thus it is also simple to manufacture side plates 1a' by only deleting the rectangular pieces from the corners.
FIG. 3 shows a corner piece corresponding to FIGS. 2a, 2b, the longitudinal directions deviating at an angle of 45 2c' is formed by 1/16 of a spherical surface; whereby the third basic part 2b' and the second basic part 2a' are arranged at an angle of 45 correspondingly. Both side plates 1a" are formed of hexagonal plates which are symmetrical in relation to their central line K.
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