CA2027427A1 - Plug for sealing wood preservative in wood structures - Google Patents

Plug for sealing wood preservative in wood structures

Info

Publication number
CA2027427A1
CA2027427A1 CA002027427A CA2027427A CA2027427A1 CA 2027427 A1 CA2027427 A1 CA 2027427A1 CA 002027427 A CA002027427 A CA 002027427A CA 2027427 A CA2027427 A CA 2027427A CA 2027427 A1 CA2027427 A1 CA 2027427A1
Authority
CA
Canada
Prior art keywords
plug
preservative
wood
seal
interior
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
CA002027427A
Other languages
French (fr)
Inventor
William S. Laidlaw
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CA002027427A priority Critical patent/CA2027427A1/en
Priority to US07/657,850 priority patent/US5114032A/en
Publication of CA2027427A1 publication Critical patent/CA2027427A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D39/00—Closures arranged within necks or pouring openings or in discharge apertures, e.g. stoppers
    • B65D39/08—Threaded or like closure members secured by rotation; Bushes therefor
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
    • A01G17/18—Means for filling-up wounds in trees
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
    • B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
    • B27K3/02—Processes; Apparatus

Abstract

ABSTRACT OF THE DISCLOSURE

The present invention relates to a plastic plug for sealing wood preservative in holes drilled in wood structures. Wood plugs currently in use are difficult to remove and are generally not suitable for re-use. This makes it difficult to retreat existing holes with preservative. The plastic plug can either be driven or screwed into position. The plug is removed by unscrewing it. It can be removed for retreatment and can be re-used. The plug provides a consistant seal. A variation of the plug allows preservative to be inserted through the plug without its removal. A seal made of rubber or other flexible material is disposed within the interior of the plug. This seal has a pair of crossed slits. The construction is such that the seal will ordinarily prevent preservative from escaping through the interior of the plug but which will allow introduction of preservative by insertion of a probe which will spread apart the lips formed by the slits.

Description

~f)~ 2 ~

STRUCTURES ~ . -The present invention relates to a plug for sealing wood preservatives in holes drilled in wood structures, and more particulary to sealing wood preservatives in holes drilled in standing wood utility poles.
.~ The present invention pro~ides a plug that can be removed and re-used when subsequent applications of wovd preservative are applied to a pole. A variation provides for a fle~ible diaphram ",-, ~ -,,--within the interior of the plug which allows injection of preservative without removal of the plug. r,~
The present invention provides a plug that may be flexible ....
and that will seal wood preservative in the hole with consistancy. - .. ' .
Standing wood poles are typically used by power and ' :, ! :. .:, communication utilities. To prolong the life of these poles many companies have wood pole maintenance programs. Injection of a . .-: , . . .
wood preservative into holes drilled in a pole is a common method : -:
. , -.
.; ~ of curbing the spread of rot inside the pole. The first internal rot treatment is applied after the pole has been in service for a :~ number of years. Additional treatments at regular intervals are subsequently applied.

' ;~ '' ,S~ ~ 2 7 A deficiency of the wood dowels usually used as plugs is that once installed, they ~re difflcult to remQve when addition~l treatment is required. Another difficulty is that the sealing capability of the wood plugs is not consistant.
The present invention conslsts of a tapered thermoplastic cylinder with an external screw thread and female receptical at the head end of the plug which will mate with a removal tool.
The plu~ can be either driven or screwed into position. For ~ ~
removal the plug is unscrewed. - .
. .
In a second embodyment a sealing ring is added to the outer end of the plug. This ring improves sealing characteristics when the axial center line of the plug and the surface of the wood structure are at or near right angles.

In a third embodyment the interior of the plug is hollow ~ -except for a seal made of rubber or other flexible material which is disposed within the interior of the plug. This seal has a pair of crossed slits The construction is such that the seal will ordinarily prevent preservative from escaping through the interior of the plug but which will allow introduction of preservative by insertion .
of a probe which will spread apart the lips formed by the slits.

.

The invent,ion is exemplified in the drawlng in which~

Figure I is a side view of the preferred embodyment of the plug. ~:
Figure 2 is a end view of the plug shown in Figure 1. .
Figure 3 is a slde view of a second embodyment of the plug in which a sealing ring is added to the preferred ... .
embodyment.

Figure 4 is çross section of a third embodyment of the plug In .. which the solid portion of the interior of the plug of either the preferred or second err~bodyments with or .. i ;
without external screw threads is replaced by a flexable seal wlth slits. ' ' ,- -.

Figure 5 is an end view of the plug shown in Figure 4.

Referring to the drawing of the invention the plug is a .
thermoplastic tapered cylinder 10 with a external screw thread 12. : ~ ~
A means to connect a tool is shown as a female receptical 18 which : ~ -will accept a removal tool. A sealing ring 20 is added in the ~ . -embodyment of the plug shown in Figure 3. A internal flexable seal 22 added to either the preferred or second embodyment is shown in Figure 4. The slits 24 located in this inner seal are ;
shown in Figure 5.

As used in this descrlption and in the appended claims the word "thermoplastlc" means a plastic which Irreversably deforms upon setting.

Claims (3)

1. A plug used for sealing wood preservatives in holes in wooden structures which is a tapered thermoplastic cylinder with a external self tapping screw thread.
2. A plug as claimed in claim I with the addition of a sealing ring at the head end of the plug.
3. A plug as claimed in either claim 1 or claim 2 with or without a external self tapping screw thread where an interior flexible seal separates the outer end from the inner end of the plug; the seal having a pair of crossed slits which will allow insertion of a probe, but which will ordinarily prevent preservative from escaping through the interior of the plug.
CA002027427A 1990-10-12 1990-10-12 Plug for sealing wood preservative in wood structures Abandoned CA2027427A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA002027427A CA2027427A1 (en) 1990-10-12 1990-10-12 Plug for sealing wood preservative in wood structures
US07/657,850 US5114032A (en) 1990-10-12 1991-02-20 Plug for sealing preservative in wood

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA002027427A CA2027427A1 (en) 1990-10-12 1990-10-12 Plug for sealing wood preservative in wood structures

Publications (1)

Publication Number Publication Date
CA2027427A1 true CA2027427A1 (en) 1992-04-13

Family

ID=4146143

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002027427A Abandoned CA2027427A1 (en) 1990-10-12 1990-10-12 Plug for sealing wood preservative in wood structures

Country Status (2)

Country Link
US (1) US5114032A (en)
CA (1) CA2027427A1 (en)

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US10611048B1 (en) 2016-05-27 2020-04-07 SmartFume Co. Wood treatment device

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10611048B1 (en) 2016-05-27 2020-04-07 SmartFume Co. Wood treatment device
US11213972B1 (en) 2016-05-27 2022-01-04 SmartFume Co. Device for dispensing wood-treatment agent
US11752659B1 (en) 2016-05-27 2023-09-12 SmartFume Co. Device for dispensing wood-treatment agent with threaded adapter

Also Published As

Publication number Publication date
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Legal Events

Date Code Title Description
FZDE Discontinued