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US4015376A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for stabilizing a mobile home roof

Assignee: Individual
•
Filing: 1976-04-12
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Granted: 1977-04-05
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Expires: 1996-04-12
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Abstract

Abstract A mobile home having a membrane-type roof is stabilized by placement of a plurality of tensioned straps extending transversely across the membrane roof and in contact with the roof over a substantial portion of the length of said straps. The straps are anchored to a structural member at the edge of the roof, so that the straps constitute a permanent part of the mobile home. Hence, during transportation of the home along a highway, as well as during wind storms, etc., any upward flexing of the membrane roof is prevented by the tensioned straps which lie adjacent said roof. A suitable strap may be a 1200 pound test braided nylon rope having a diameter of about 1/4 inch. Springs for achieving tension in the rope may be helical springs about 16 inches long and having a diameter of about 1/2 inch, with said springs being made from steel wire having a diameter of about 1/32 inch. The springs should be capable of establishing a tension of about 30 pounds in the straps which lie adjacent the roof, even when the wind load is zero.

Inventors

  • 👤 Leslie L. Gerhardt

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 21:05
CPC Classifications
E; E04; E04D; E04D3/00; E04D3/36; E04B; E04B7/00; E04B7/08; E04H; E04H9/00; E04H9/14; Y; Y02; Y02A; Y02A50/00

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 181 words
Apparatus for insuring the integrity of the roof on a mobile home when said roof is subjected to wind loads, comprising: a. a plurality of straps adapted for extending transversely across the roof of a mobile home, with the quantity of said straps being such that they are spaced about four feet apart along the length of the mobile home, and the straps being in contact with the roof along a substantial portion of their length, and the length of said straps being significantly shorter than the width of the mobile home, such that a substantial gap remains between one end of a strap and the adjacent edge of the roof when a strap is layed across the roof in a side-to-side direction; b. bracket means adapted for rigidly connecting respective ends of said straps to structural members along the side edges of the roof; and c. spring means for continuously maintaining a tension of about 30 pounds in said straps between said bracket means, whereby the roof underneath said straps is biased against any upward movement by said tensioned straps.
Claim 2
Dependent Claim 181 words
Apparatus for insuring the integrity of the roof on a mobile home when said roof is subjected to wind loads, comprising: a. a plurality of straps adapted for extending transversely across the roof of a mobile home, with the quantity of said straps being such that they are spaced about four feet apart along the length of the mobile home, and the straps being in contact with the roof along a substantial portion of their length, and the length of said straps being significantly shorter than the width of the mobile home, such that a substantial gap remains between one end of a strap and the adjacent edge of the roof when a strap is layed across the roof in a side-to-side direction; b. bracket means adapted for rigidly connecting respective ends of said straps to structural members along the side edges of the roof; and c. spring means for continuously maintaining a tension of about 30 pounds in said straps between said bracket means, whereby the roof underneath said straps is biased against any upward movement by said tensioned straps.
Claim 3
Dependent Claim 28 words
The apparatus as claimed in claim 1 wherein said spring means for maintaining the straps in tension constitute coil springs having a spring constant of about 2.5 lb/in.
Claim 4
Dependent Claim 27 words
The apparatus as claimed in claim 1 wherein said straps constitute braided nylon rope having a diameter of about 1/4 inch and rated at 1200 pound test.
Claim 5
Dependent Claim 53 words
The apparatus as claimed in claim 1 wherein said spring means for maintaining the straps in tension constitutes a plurality of coil springs, each having a formed diameter of about 1/2 inch and a length of about 16 inches, with said springs being formed from wire having a diameter of about 1/32 inch.
Claim 6
Dependent Claim 244 words
The combination comprising: a. a mobile home having a membrane-type roof suspended over a plurality of roofing trusses, and the roof membrane being formed from a series of large panels secured together at their adjacent edges so as to form seams in the roof, and the membrane being secured to the trusses and other structural members with conventional fasteners; b. a plurality of brackets for attachment to the structural members along the edges of the roof, and said brackets having means for engaging the ends of a strap member, and said brackets being spaced approximately four feet apart along the edges of said roof; c. a plurality of flexible but non-stretchable straps extending transversely across the roof of the mobile home, with there being one strap for each pair of brackets on opposite sides of the roof, and the length of said straps being less than the width of the mobile home; and d. a plurality of helical springs including one spring for each strap, and the straps being sized such that a spring which connects one end of a strap to a bracket must be placed in tension in order to permit the opposite end of the strap to be connected with an opposite bracket, with said tensioned springs serving to keep the straps in contact with the membrane-type roof but not connected to same, whereby the roof is restrained by the straps against any upward movement as a result of wind gusts.
Claim 7
Dependent Claim 244 words
The combination comprising: a. a mobile home having a membrane-type roof suspended over a plurality of roofing trusses, and the roof membrane being formed from a series of large panels secured together at their adjacent edges so as to form seams in the roof, and the membrane being secured to the trusses and other structural members with conventional fasteners; b. a plurality of brackets for attachment to the structural members along the edges of the roof, and said brackets having means for engaging the ends of a strap member, and said brackets being spaced approximately four feet apart along the edges of said roof; c. a plurality of flexible but non-stretchable straps extending transversely across the roof of the mobile home, with there being one strap for each pair of brackets on opposite sides of the roof, and the length of said straps being less than the width of the mobile home; and d. a plurality of helical springs including one spring for each strap, and the straps being sized such that a spring which connects one end of a strap to a bracket must be placed in tension in order to permit the opposite end of the strap to be connected with an opposite bracket, with said tensioned springs serving to keep the straps in contact with the membrane-type roof but not connected to same, whereby the roof is restrained by the straps against any upward movement as a result of wind gusts.
Claim 8
Dependent Claim 45 words
The apparatus as claimed in claim 5 wherein the spring constant for each of the helical springs is about 2.5 lb/in, and the deflection imparted to said springs so as to put the straps in tension is well below the elastic limit of said springs.
Claim 9
Dependent Claim 27 words
The apparatus as claimed in claim 5 wherein the tension established in said straps is about 30 pounds when the wind load on the straps is zero.
Claim 10
Independent Claim 174 words
The method of preventing a membrane-type roof on a mobile home from vibrating in response to wind loads, comprising the steps of: a. placing a plurality of spaced straps adjacent the membrane-type roof in such a way that the straps are in contact with said roof over a substantial portion of their length but not rigidly connected to said roof, with said straps extending transversely across the roof from one side to the other, and the straps being permanently secured to the mobile home near the edges of the roof so that the straps travel with the mobile home wherever it is moved, with the straps being spaced about four feet apart along the length of the mobile home; and b. placing said straps in tension such that the roof is continuously biased downward against the supporting trusses by said straps, such that wind loads that would otherwise tend to flex the membrane are resisted by tension loads in the straps, and the tension which is imparted to said straps is about 30 pounds.
Claim 11
Independent Claim 174 words
The method of preventing a membrane-type roof on a mobile home from vibrating in response to wind loads, comprising the steps of: a. placing a plurality of spaced straps adjacent the membrane-type roof in such a way that the straps are in contact with said roof over a substantial portion of their length but not rigidly connected to said roof, with said straps extending transversely across the roof from one side to the other, and the straps being permanently secured to the mobile home near the edges of the roof so that the straps travel with the mobile home wherever it is moved, with the straps being spaced about four feet apart along the length of the mobile home; and b. placing said straps in tension such that the roof is continuously biased downward against the supporting trusses by said straps, such that wind loads that would otherwise tend to flex the membrane are resisted by tension loads in the straps, and the tension which is imparted to said straps is about 30 pounds.
Claim 12
Dependent Claim 21 words
The method as claimed in claim 8 wherein the straps are oriented perpendicularly to the longitudinal axis of the mobile home.

References Cited (Backward Citations)

US459664A Cited
US1244763A Cited
US2133088A Cited
US3088558A Cited
US3336704A Cited
US3309822A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1980-04-04 1980-10-04 1981-04-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1984-04-04 1984-10-04 1985-04-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1988-04-04 1988-10-04 1989-04-05 $7700.00 Window Closed / Lapsed

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