US4593639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stress distribution in a sail and sail construction
Assignee: North Sails Group LLC
•
Filing: 1984-12-14
•
Granted: 1986-06-10
•
Expires: 2004-12-14
Abstract
Abstract A method for constructing a sail or any pliable lifting surface where the lift for or the motive power therefor is wind and a sail as an article of manufacture.
Inventors
- 👤 Peter G. Conrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:01
CPC Classifications
B; B63; B63H; B63H9/00; B63H9/04; B63H9/06; B63H9/067; B63H9/0678
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
130 words
As an article of manufacture, a pliant lifting surface such as a sail, comprising at least one continuous skin member of a plurality of panels, a plurality of flat pliant grid members across said panel and integrally and adheringly with said skin member, said grid members defining a lattice work pattern on said skin member; interconnectingly with adjoining panels, as load bearing members for said lifting surface, a plurality of pliant flat structural members interconnectingly with said panels for load bearing with said skin member and with said grid members, said plurality of structural members, interconnectingly joining said panels and projecting radiatingly outwardly into said lifting surface and securedly into point load locations for said lifting surface and joining together at least two point load locations for said lifting surface.
Claim 2
Dependent Claim
130 words
As an article of manufacture, a pliant lifting surface such as a sail, comprising at least one continuous skin member of a plurality of panels, a plurality of flat pliant grid members across said panel and integrally and adheringly with said skin member, said grid members defining a lattice work pattern on said skin member; interconnectingly with adjoining panels, as load bearing members for said lifting surface, a plurality of pliant flat structural members interconnectingly with said panels for load bearing with said skin member and with said grid members, said plurality of structural members, interconnectingly joining said panels and projecting radiatingly outwardly into said lifting surface and securedly into point load locations for said lifting surface and joining together at least two point load locations for said lifting surface.
Claim 3
Dependent Claim
186 words
As an article of manufacture, a sail, comprised of at least one continuous skin member of a plurality of panels, including a plurality of corners for said sail as point load locations, a plurality of flat pliant grid members across said panels, said grid members integrally interconnecting with said panels, said grid members defining a latticework pattern on said sail with said latticework interconnectingly adjoining a latticework on an adjacent panel, said latticework pattern interlockingly bearing a load on said sail; a plurality of pliant flat structural members interconnectingly integral with said panels, for load bearing said load along with a load on said skin member and said grid members; said plurality of structural members comprising a plurality of: (a) first set of structural members interconnectingly joining said plurality of panels on said sail, (and b) a plurality of second set of structural members interconnectingly integral with said first set of structural members and securedly radiating out of a boundary point load location and into said sail wherein said second set of structural members also interconnectingly join at least two point load locations of said sail.
Claim 4
Dependent Claim
186 words
As an article of manufacture, a sail, comprised of at least one continuous skin member of a plurality of panels, including a plurality of corners for said sail as point load locations, a plurality of flat pliant grid members across said panels, said grid members integrally interconnecting with said panels, said grid members defining a latticework pattern on said sail with said latticework interconnectingly adjoining a latticework on an adjacent panel, said latticework pattern interlockingly bearing a load on said sail; a plurality of pliant flat structural members interconnectingly integral with said panels, for load bearing said load along with a load on said skin member and said grid members; said plurality of structural members comprising a plurality of: (a) first set of structural members interconnectingly joining said plurality of panels on said sail, (and b) a plurality of second set of structural members interconnectingly integral with said first set of structural members and securedly radiating out of a boundary point load location and into said sail wherein said second set of structural members also interconnectingly join at least two point load locations of said sail.
Claim 5
Dependent Claim
192 words
As an article of manufacture, a sail comprising of a continuous skin member of a plurality of panels including a plurality of point load locations of said sail, a plurality of pliant flat grid members in strip form across said panels, said grid members integrally interconnecting with grid members of at least one adjoining panel, said grid members defining a latticework pattern on said skin member, said latticemwork interconnectingly adjoining a latticework on an adjacent panel, said grid members in said latticework pattern interlockingly bearing a part of a total load exerted on said sail, a plurality of first set of structural members for said said interconnectingly integral with said panels for said sail, said first set of structural members interconnectingly joining said plurality of panels on said sail, a second set of a plurality of sturctural members for said sail interconnectingly integral with said first set of structural members, and securedly attached to said point load locations and projecting outwardly of a point load location of said sail into said sail and wherein said second set of structural members also interconnectingly join at least two point load locations of said sail.
Claim 6
Dependent Claim
192 words
As an article of manufacture, a sail comprising of a continuous skin member of a plurality of panels including a plurality of point load locations of said sail, a plurality of pliant flat grid members in strip form across said panels, said grid members integrally interconnecting with grid members of at least one adjoining panel, said grid members defining a latticework pattern on said skin member, said latticemwork interconnectingly adjoining a latticework on an adjacent panel, said grid members in said latticework pattern interlockingly bearing a part of a total load exerted on said sail, a plurality of first set of structural members for said said interconnectingly integral with said panels for said sail, said first set of structural members interconnectingly joining said plurality of panels on said sail, a second set of a plurality of sturctural members for said sail interconnectingly integral with said first set of structural members, and securedly attached to said point load locations and projecting outwardly of a point load location of said sail into said sail and wherein said second set of structural members also interconnectingly join at least two point load locations of said sail.
Claim 7
Dependent Claim
20 words
The sail as defined in claim 3 wherein the grid members are in a latticework of a diamond shaped pattern.
Claim 8
Dependent Claim
33 words
The sail as defined in claim 3 wherein the grid members are in a latticework of an approximate diamond shaped pattern with further grid members bisecting a number of diamonds transversely and longitudinally.
Claim 9
Dependent Claim
20 words
The sail as defined in claim 3 wherein the grid members are in a latticework of a variegated shaped pattern.
Claim 10
Dependent Claim
25 words
The sail as defined in claim 3 wherein the grid members are in a latticework as means for accomodating a load pattern on said sail.
Claim 11
Dependent Claim
14 words
The sail as defined in claim 3 wherein the same is a jib sail.
Claim 12
Dependent Claim
13 words
The sail as defined in claim 3 wherein the same is a mainsail.
Claim 13
Dependent Claim
39 words
The sail as defined in claim 3 wherein the skin member is of fabric or a laminate in a plurality of panels, said grid members are of a Kevlar fabric and said structural members are of a Kevlar fabric.
Claim 14
Dependent Claim
16 words
The sail as defined in claim 6, wherein said variegated shaped pattern is of predetermined size.
Claim 15
Dependent Claim
166 words
In a method for constructing a sail and for distributing stress in a sail whereby said sail is capable of resisting dynamic loading, said method comprising: integrally interconnecting a plurality of skin panels for a sail with a plurality of grid members in a latticework whereby said latticework bears a partial load distributively with a skin member; integrally interconnecting a plurality of skin panels for a sail with a plurality of structural members and a plurality of grid members in said latticework and a plurality of structural members radiating outwardly from a point load corner of said sail, and securedly interconnecting at least two point load corners of said sail; integrally interconnecting at least two point load corners of said sail with said structural members along lines of load distribution and along lines of encountered stress in a sail when said sail is in use; and supporting with said structural members a load imparted on said grid members and on said skin members of said sail.
Claim 16
Dependent Claim
166 words
In a method for constructing a sail and for distributing stress in a sail whereby said sail is capable of resisting dynamic loading, said method comprising: integrally interconnecting a plurality of skin panels for a sail with a plurality of grid members in a latticework whereby said latticework bears a partial load distributively with a skin member; integrally interconnecting a plurality of skin panels for a sail with a plurality of structural members and a plurality of grid members in said latticework and a plurality of structural members radiating outwardly from a point load corner of said sail, and securedly interconnecting at least two point load corners of said sail; integrally interconnecting at least two point load corners of said sail with said structural members along lines of load distribution and along lines of encountered stress in a sail when said sail is in use; and supporting with said structural members a load imparted on said grid members and on said skin members of said sail.
Claim 17
Dependent Claim
82 words
As an article of manufacture, a sail, comprised of at least one skin member of a plurality of panels; a plurality of pliant flat structural members interconnectingly adheringly attached to said skin member for predominant load bearing of a load exerted on said sail when said sail is in use, said plurality of flat structural members interconnectingly joining said panels and projecting securedly into a plurality of point load locations on said sail and interconnectingly joining at least two point load locations.
Claim 18
Dependent Claim
82 words
As an article of manufacture, a sail, comprised of at least one skin member of a plurality of panels; a plurality of pliant flat structural members interconnectingly adheringly attached to said skin member for predominant load bearing of a load exerted on said sail when said sail is in use, said plurality of flat structural members interconnectingly joining said panels and projecting securedly into a plurality of point load locations on said sail and interconnectingly joining at least two point load locations.
Claim 19
Dependent Claim
30 words
The article of manufacture as defined in claim 13 wherein the pliant flat structural members are of an aramid material and said skin member is of a polyester-polyester film laminate.
Claim 20
Dependent Claim
49 words
The article of manufacture as defined in claim 13, wherein the skin member is a polyester fabric, an aramid fabric, a polyester-aramid fabric, an aramid material polyester film laminate or a polyester fabric polyester film laminate, and said plurality of pliant flat structural members are of an aramid material.
Claim 21
Dependent Claim
56 words
The article of manufacture as defined in claim 13, wherein the plurality of flat structural members are of an aramid material and said flat structural members are projecting securedly into at least two point load locations on said sail, comprising a head for said sail, a tack for said sail, or a clew for said sail.
Claim 22
Dependent Claim
95 words
The article of manufacture as defined in claim 13, wherein the same is a Genoa sail of a plurality of panels of a polyester-polyester film laminate with a plurality of pliant flat structural members of an aramid-polyester film laminate or aramid monofilaments wherein said aramid-polyester film or monofilaments are distributed in a flat ribbon-like form interconnectingly and adheringly attached to said skin member, and wherein said plurality of flat structural members interconnectingly join said panels and join a plurality of point load locations comprised of a head, a tack or a clew for said sail.
Claim 23
Dependent Claim
15 words
The article of manufacture as defined in claim 13, wherein the sail is a mainsail.
Claim 24
Dependent Claim
15 words
The article of manufacture as defined in claim 13, wherein the same is a jib.
Claim 25
Dependent Claim
24 words
The article of manufacture as defined in claim 13, wherein the pliant flat structural members are continuous between at least two point load locations.
Claim 26
Dependent Claim
22 words
The article of manufacture as defined in claim 13, wherein each of the panels is joined with a flat cross structural member.
References Cited (Backward Citations)
US3756A
Cited
US4305A
Cited
US30694A
Cited
US401373A
Cited
US1411504A
Cited
DE702469C
Cited
US2378877A
Cited
FR967484A
Cited
US2589203A
Cited
DE909899C
Cited
US3174453A
Cited
GB1196756A
Cited
US3611649A
Cited
GB1314579A
Cited
US3626886A
Cited
US3602180A
Cited
US3828711A
Cited
US3903826A
Cited
US3954076A
Cited
US4041653A
Cited
US4263861A
Cited
US4383492A
Cited
JPS58112895A
Cited
US4449467A
Cited
US4476799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-06-09 | 1989-12-09 | 1990-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-09 | 1993-12-09 | 1994-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-09 | 1997-12-09 | 1998-06-10 | $7700.00 | Window Closed / Lapsed |