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US3878600A Expired / Lapsed US ⏱️ 0.0 years remaining

Method of making precisely positioned composite structure utilizing non-precise fiberglassing techniques

Assignee: GRETNA FIBERGLASS FABRICATORS Inc
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Filing: 1973-04-02
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Granted: 1975-04-22
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Expires: 1993-04-02
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Abstract

Abstract A water tight protective casing which includes an outer fiberglass box with an inner metal frame in which four electronic logging panels, for example, can be placed, two to either side of the main central division in the frame, for transportation particularly in a marine environment. The casing also includes a fiberglass top having a generally pyramidal shape in order to evenly distribute the sealing stresses and pressures from the central top point along the gasketed, sealing interface between the top and the bottom of the casing. The inner frame comprises six, peripherally spaced, vertical channel iron members, the inner one being doubled, fastened to a lower and upper box-like auxillary frame. The inner frame itself contains the four electronic panel boxes which are situated within and between the chanel iron members which define the panel chambers. Centrally located within the frame is a vertical support terminating in a threaded male member or stud to which is attached the top of the casing by means of a special locking nut. The frame must be precisely positioned and located within the exterior casing in order to properly mate with the top, close tolerances being absolutely necessary to insure the waterproof capabilities of the casing. Part of the method of producing the casing includes providing side adjustment members on the frame, initially moveable with respect to the main body of the frame, which are positioned against the inner sides of the outer, molded fiberglass box, which was formed with a chopper gun, after the frame is initially positioned within it. The frame is then removed, the adjustment members welded in place and the fixed frame returned to the outer box and attached thereto and embedded therein by manually adding in fiberglass mats or layers over the facing side and bottom members of the frame, saturating them with resin and allowing them to harden.

Inventors

  • 👤 Gordon H Gilbert

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 23:41
CPC Classifications
B; B29; B29D; B29D22/00; B29K; B29K2105/00; B29K2105/06; Y; Y10; Y10S; Y10S220/00; Y10S220/23; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49888; Y10T29/49895

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 211 words
The method of making casing, which includes an outer fiberglass box and an inner metal frame precisely positioned within the box, comprising the following serial steps: a. providing a gel coated smooth surfaced mold defining the outer surface of the box; b. forming a fiberglass structure on and about the mold with a chopper gun or other non-precise structure forming technique to produce the basic body of the box; c. removing the fiberglass box structure from the mold; d. providing a metal frame having adjustable side members and placing the frame within the fiberglass box structure; e. positioning the frame within the box with respect to its upper lip by means of a positioning jig; f. moving the adjustable side members out against the interior sides of the fiberglass box structure; g. securing and fixing the heretofore adjustable side members to the frame; and h. adding fiberglass layers over the fixed, heretofore adjustable members in the areas which are in contact with the interior sides of the fiberglass box structure and allowing them to harden structurally integrating and attaching the metal frame to the fiberglass box; whereby a box is formed having a precisely positioned frame therein even though non-precise fiberglassing techniques were used to produce the basic fiberglass box structure.
Claim 2
Independent Claim 211 words
The method of making casing, which includes an outer fiberglass box and an inner metal frame precisely positioned within the box, comprising the following serial steps: a. providing a gel coated smooth surfaced mold defining the outer surface of the box; b. forming a fiberglass structure on and about the mold with a chopper gun or other non-precise structure forming technique to produce the basic body of the box; c. removing the fiberglass box structure from the mold; d. providing a metal frame having adjustable side members and placing the frame within the fiberglass box structure; e. positioning the frame within the box with respect to its upper lip by means of a positioning jig; f. moving the adjustable side members out against the interior sides of the fiberglass box structure; g. securing and fixing the heretofore adjustable side members to the frame; and h. adding fiberglass layers over the fixed, heretofore adjustable members in the areas which are in contact with the interior sides of the fiberglass box structure and allowing them to harden structurally integrating and attaching the metal frame to the fiberglass box; whereby a box is formed having a precisely positioned frame therein even though non-precise fiberglassing techniques were used to produce the basic fiberglass box structure.
Claim 3
Independent Claim 211 words
The method of making casing, which includes an outer fiberglass box and an inner metal frame precisely positioned within the box, comprising the following serial steps: a. providing a gel coated smooth surfaced mold defining the outer surface of the box; b. forming a fiberglass structure on and about the mold with a chopper gun or other non-precise structure forming technique to produce the basic body of the box; c. removing the fiberglass box structure from the mold; d. providing a metal frame having adjustable side members and placing the frame within the fiberglass box structure; e. positioning the frame within the box with respect to its upper lip by means of a positioning jig; f. moving the adjustable side members out against the interior sides of the fiberglass box structure; g. securing and fixing the heretofore adjustable side members to the frame; and h. adding fiberglass layers over the fixed, heretofore adjustable members in the areas which are in contact with the interior sides of the fiberglass box structure and allowing them to harden structurally integrating and attaching the metal frame to the fiberglass box; whereby a box is formed having a precisely positioned frame therein even though non-precise fiberglassing techniques were used to produce the basic fiberglass box structure.
Claim 4
Independent Claim 211 words
The method of making casing, which includes an outer fiberglass box and an inner metal frame precisely positioned within the box, comprising the following serial steps: a. providing a gel coated smooth surfaced mold defining the outer surface of the box; b. forming a fiberglass structure on and about the mold with a chopper gun or other non-precise structure forming technique to produce the basic body of the box; c. removing the fiberglass box structure from the mold; d. providing a metal frame having adjustable side members and placing the frame within the fiberglass box structure; e. positioning the frame within the box with respect to its upper lip by means of a positioning jig; f. moving the adjustable side members out against the interior sides of the fiberglass box structure; g. securing and fixing the heretofore adjustable side members to the frame; and h. adding fiberglass layers over the fixed, heretofore adjustable members in the areas which are in contact with the interior sides of the fiberglass box structure and allowing them to harden structurally integrating and attaching the metal frame to the fiberglass box; whereby a box is formed having a precisely positioned frame therein even though non-precise fiberglassing techniques were used to produce the basic fiberglass box structure.
Claim 5
Dependent Claim 44 words
The method of claim 1 wherein step ''''g'''' includes the following serial steps: g.1. removing the frame from the box; g.2. welding the side members to the frame in the relative positions determined in step ''''f''''; and g.3. repositioning the frame within the box.
Claim 6
Dependent Claim 18 words
The method of claim 2 wherein step g further includEs the step of cleaning and painting the weldment.
Claim 7
Dependent Claim 31 words
The method of claim 1 wherein in step ''''d'''' the metal frame provided includes bottom footing structures and in step ''''h'''' fiberglass layers are also added over the bottom footing structures.
Claim 8
Dependent Claim 15 words
The method of claim 1 wherein in step h the added fiberglass layers are hand-laid.

References Cited (Backward Citations)

US2948047A Cited
US3115281A Cited
US3458275A Cited
US3707033A Cited
US3811173A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-04-21 1978-10-21 1979-04-22 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-04-21 1982-10-21 1983-04-22 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-04-21 1986-10-21 1987-04-22 $7700.00 Window Closed / Lapsed

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