CA1269551A - Bolt seal - Google Patents
Bolt sealInfo
- Publication number
- CA1269551A CA1269551A CA000507239A CA507239A CA1269551A CA 1269551 A CA1269551 A CA 1269551A CA 000507239 A CA000507239 A CA 000507239A CA 507239 A CA507239 A CA 507239A CA 1269551 A CA1269551 A CA 1269551A
- Authority
- CA
- Canada
- Prior art keywords
- bolt
- shoulder
- cap
- head
- locking mechanism
- 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.)
- Expired - Fee Related
Links
Landscapes
- Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
Abstract
ABSTRACT
A novel bolt and locking mechanism which is receivable on a shoulder near the end of the bolt and wherein the locking mechanism comprises a shoulder cap and a nipple cap between which is mounted a spring member which is formed with grooves and through which the head of the bolt can be extended so as to deflect the spring as the spring locks in the groove of the bolt.
A novel bolt and locking mechanism which is receivable on a shoulder near the end of the bolt and wherein the locking mechanism comprises a shoulder cap and a nipple cap between which is mounted a spring member which is formed with grooves and through which the head of the bolt can be extended so as to deflect the spring as the spring locks in the groove of the bolt.
Description
~9~s~
SPECIFICATION
This invention relates in general to security devices and in particular to a unigue bolt lock which comprises two members and a spring into which the head of the bolt is received.
U. S. Patent 4,010,788 discloses a bolt seal with a threaded bolt upon which a spin loc~ can be received.
The present invention comprises a bolt with a head on one end and a groove which forms a ~houlder adjacent the other end which is insertable into a locking mechanism comprising two sleeves and a spring which is formed with slots so as to allow portions of the spriny to be deflected to allow the end of the bolt to he inserted therein such that the spr:ing will be received in the groove to lock the locking mechanism to the end of the bolt. The bolt portion can be different lengths and diameters and the lock cannot be removed from the bolt without damaging the structure so that it would be obvious to ~: an observer that the bolt and lock had been tampered with.
A security device comprising, a bolt formed with a head on one end and a shaft portion extending from said head and formed with a groove and shoulder near the second end, a locking mechanism comprising a shoulder cap formed with a central opening through which the shaft of the bolt can extend, a nipple cap attached to said shoulder cap and having a cover portion for covering the central opening of said shoulder cap, and a spring member fo~med with an outer edge of generally ~dlsc shape which is held between said shoulder cap and said nipple cap and also has a central truncated conical shaped portion in which grooves are formed to define locking fingers with ends separated to form a central opening which is smaller than said shaft portion of said bolt such ~' i ~, ~L2~35~
that the second end of said bolt can be forced into said shoulder cap, said nipple cap and said spring arranged so that said fingers can be received in said groove of said bolt to engage said shoulder to lock said locking mechanism to said bolt so that it cannot be removed without destroying said bolt and/or said locking mechanism, wherein said second end of said bolt is tapered so as to spread said f:ingers of said spring, wherein said shaft portion of said bolt is made of material such that it can be bent 90 degrees without fracturing or breaking, wherein said shaft portion of said bolt has two portions with a first portion near the head of the bo:Lt having a larger diameter than the second portion remote from the head ~ of said bolt and wherein said shoulder cap engages ~aid second ; portion and wherein said longer diameter is the same diameter as the portion of said shoulder cap adjacent said first portion.
Other objects, features and advantages of the invention will be readily apparent from the following description of certain preferred embodiments thereof taken in conjunction with the accompanying drawings although variations and modifications may be effected without departing from the spirit and scope of the novel concepts of the disclosure and in which:
~;~ ON THE DRAWINGS:
FIG. 1 is a sectional view illustrating the bolt and locking mechanism in use;
FIG. 2 is an end plan view illustrating the loc~ing device;
FIG. 3 is a partial sectional view through the -s~
locking device;
FIG. 4 is a sectional view taken on line IV-IV in FIG.
3; and FIG. 5 is a sectional view illustrating the locking spring of the invention.
FIG. l illustrates the bolt lock of the inven-tion designated generally as 10 which comprises a bolt having a head 13 with a curved surface and a cylindrical portion 14 which is attached by a fillet 16 to the main shaft 15 of the bolt.
The tapered portion 17 connects the main portion 15 to a smaller portion 18 which is formed with a groove l9 by tapering a portion of the smaller portion 18 down to the shoulder 21.
Cylindrical head portion 22 joins the shoulder 21 and has a tapered end 23 as illustrated.
A locking mechanism 24 comprises three parts comprising - a shoulder cap 26, a nipple cap 27 and a spring member 36.
The shoulder cap has a first cylindrical portion 28 which in the locked position fits around the smaller portion 18 of the bolt. The shoulder cap also has outwardly extending portion ~o 29 and a cover portion 26 and an outer curved portion 31 which locks the nipple caP 27 and the spring 36. The nipple cap 27 has a cylindrical portion 34 and an inwardly extending portion 33 which forms a cap that covers the end 23 o~ the bolt.
The spring 36 is locked ~etween the members 26 and 27 as illustrated in FIG. 3. The spring 36 has a disc shaped portion 38 formed with an outer edge 37 and a generally truncated conical portion which is separated by slots 51, 52, 53~ 54,55 and 56 so as to form inwardly extending fingers 39 through 44 as illustrated in FIG. 4. The ends SO of the fingers 39 through 44 engage the shoulder 21 of the bolt ; -2-~2~i~35S~
portion 22 when the bolt is inserted into the locking mechanism 24.
In use, the bolt 10 is inserted through a pair of members 11 and 12 formed with a central open;ng through which the main body portion 15 of the bolt extends and the locking mechanism 24 is pressed onto the end 23 of the bolt.
The tapered end 23 separates the fingers 39 through 44 such they ride up on the prtion 22 until the fingers are received in the groove 19 and then lock behind the shoulder 21 of the bolt portion 22 as illustrated in FIG. 3.
After the locking mechanism has been inserted onto the portion 22 of the bolt it can be rotated relative to the bolt but it cannot be removed since the locking fingers 39 through 44 engage the shoulder 21 and cannot be removed therefrom.
In a particular embodiment the bolt was made of AlSl type 4037 steel and the large portion 15 was designed so that it would withstand a 90 bend without cracking or breaking.
The shoulder cap 26 was formed of 17 gauge (0.054) DQ
CRS. The spring 36 was formed of 24 gauge (0.024) CRA
spring steel SAE 1050 or equivalent.
It is seen that this invention provides a novel bolt lock mechanism and although it has been described with respect to preferred embodiments, it is not to be so limited as changes and modifications can be made therein which are within the full intended scope as defined by the appended claims.
,:
' _3_
SPECIFICATION
This invention relates in general to security devices and in particular to a unigue bolt lock which comprises two members and a spring into which the head of the bolt is received.
U. S. Patent 4,010,788 discloses a bolt seal with a threaded bolt upon which a spin loc~ can be received.
The present invention comprises a bolt with a head on one end and a groove which forms a ~houlder adjacent the other end which is insertable into a locking mechanism comprising two sleeves and a spring which is formed with slots so as to allow portions of the spriny to be deflected to allow the end of the bolt to he inserted therein such that the spr:ing will be received in the groove to lock the locking mechanism to the end of the bolt. The bolt portion can be different lengths and diameters and the lock cannot be removed from the bolt without damaging the structure so that it would be obvious to ~: an observer that the bolt and lock had been tampered with.
A security device comprising, a bolt formed with a head on one end and a shaft portion extending from said head and formed with a groove and shoulder near the second end, a locking mechanism comprising a shoulder cap formed with a central opening through which the shaft of the bolt can extend, a nipple cap attached to said shoulder cap and having a cover portion for covering the central opening of said shoulder cap, and a spring member fo~med with an outer edge of generally ~dlsc shape which is held between said shoulder cap and said nipple cap and also has a central truncated conical shaped portion in which grooves are formed to define locking fingers with ends separated to form a central opening which is smaller than said shaft portion of said bolt such ~' i ~, ~L2~35~
that the second end of said bolt can be forced into said shoulder cap, said nipple cap and said spring arranged so that said fingers can be received in said groove of said bolt to engage said shoulder to lock said locking mechanism to said bolt so that it cannot be removed without destroying said bolt and/or said locking mechanism, wherein said second end of said bolt is tapered so as to spread said f:ingers of said spring, wherein said shaft portion of said bolt is made of material such that it can be bent 90 degrees without fracturing or breaking, wherein said shaft portion of said bolt has two portions with a first portion near the head of the bo:Lt having a larger diameter than the second portion remote from the head ~ of said bolt and wherein said shoulder cap engages ~aid second ; portion and wherein said longer diameter is the same diameter as the portion of said shoulder cap adjacent said first portion.
Other objects, features and advantages of the invention will be readily apparent from the following description of certain preferred embodiments thereof taken in conjunction with the accompanying drawings although variations and modifications may be effected without departing from the spirit and scope of the novel concepts of the disclosure and in which:
~;~ ON THE DRAWINGS:
FIG. 1 is a sectional view illustrating the bolt and locking mechanism in use;
FIG. 2 is an end plan view illustrating the loc~ing device;
FIG. 3 is a partial sectional view through the -s~
locking device;
FIG. 4 is a sectional view taken on line IV-IV in FIG.
3; and FIG. 5 is a sectional view illustrating the locking spring of the invention.
FIG. l illustrates the bolt lock of the inven-tion designated generally as 10 which comprises a bolt having a head 13 with a curved surface and a cylindrical portion 14 which is attached by a fillet 16 to the main shaft 15 of the bolt.
The tapered portion 17 connects the main portion 15 to a smaller portion 18 which is formed with a groove l9 by tapering a portion of the smaller portion 18 down to the shoulder 21.
Cylindrical head portion 22 joins the shoulder 21 and has a tapered end 23 as illustrated.
A locking mechanism 24 comprises three parts comprising - a shoulder cap 26, a nipple cap 27 and a spring member 36.
The shoulder cap has a first cylindrical portion 28 which in the locked position fits around the smaller portion 18 of the bolt. The shoulder cap also has outwardly extending portion ~o 29 and a cover portion 26 and an outer curved portion 31 which locks the nipple caP 27 and the spring 36. The nipple cap 27 has a cylindrical portion 34 and an inwardly extending portion 33 which forms a cap that covers the end 23 o~ the bolt.
The spring 36 is locked ~etween the members 26 and 27 as illustrated in FIG. 3. The spring 36 has a disc shaped portion 38 formed with an outer edge 37 and a generally truncated conical portion which is separated by slots 51, 52, 53~ 54,55 and 56 so as to form inwardly extending fingers 39 through 44 as illustrated in FIG. 4. The ends SO of the fingers 39 through 44 engage the shoulder 21 of the bolt ; -2-~2~i~35S~
portion 22 when the bolt is inserted into the locking mechanism 24.
In use, the bolt 10 is inserted through a pair of members 11 and 12 formed with a central open;ng through which the main body portion 15 of the bolt extends and the locking mechanism 24 is pressed onto the end 23 of the bolt.
The tapered end 23 separates the fingers 39 through 44 such they ride up on the prtion 22 until the fingers are received in the groove 19 and then lock behind the shoulder 21 of the bolt portion 22 as illustrated in FIG. 3.
After the locking mechanism has been inserted onto the portion 22 of the bolt it can be rotated relative to the bolt but it cannot be removed since the locking fingers 39 through 44 engage the shoulder 21 and cannot be removed therefrom.
In a particular embodiment the bolt was made of AlSl type 4037 steel and the large portion 15 was designed so that it would withstand a 90 bend without cracking or breaking.
The shoulder cap 26 was formed of 17 gauge (0.054) DQ
CRS. The spring 36 was formed of 24 gauge (0.024) CRA
spring steel SAE 1050 or equivalent.
It is seen that this invention provides a novel bolt lock mechanism and although it has been described with respect to preferred embodiments, it is not to be so limited as changes and modifications can be made therein which are within the full intended scope as defined by the appended claims.
,:
' _3_
Claims
1. A security device comprising, a bolt formed with a head on one end and a shaft portion extending from said head and formed with a groove and shoulder near the second end, a locking mechanism comprising a shoulder cap formed with a central opening through which the shaft of the bolt can extend, a nipple cap attached to said shoulder cap and having a cover portion for covering the central opening of said shoulder cap, and a spring member formed with an outer edge of generally disc shape which is held between said shoulder cap and said nipple cap and also has a central truncated conical shaped portion in which grooves are formed to define locking fingers with ends separated to form a central opening which is smaller than said shaft portion of said bolt such that the second end of said bolt can be forced into said shoulder cap, said nipple cap and said spring arranged so that said fingers can be received in said groove of said bolt to engage said shoulder to lock said locking mechanism to said bolt so that it cannot be removed without destroying said bolt and/or said locking mechanism, wherein said second end of said bolt is tapered so as to spread said fingers of said spring, wherein said shaft portion of said bolt is made of material such that it can be bent 90 degrees without fracturing or breaking, wherein said shaft portion of said bolt has two portions with a first portion near the head of the bolt having a larger diameter than the second portion remote from the head of said bolt and wherein said shoulder cap engages said second portion and wherein said longer diameter is the same diameter as the portion of said shoulder cap adjacent said first portion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US72788785A | 1985-04-26 | 1985-04-26 | |
| US727,887 | 1985-04-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1269551A true CA1269551A (en) | 1990-05-29 |
Family
ID=24924500
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000507239A Expired - Fee Related CA1269551A (en) | 1985-04-26 | 1986-04-22 | Bolt seal |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1269551A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388943A (en) * | 1993-10-05 | 1995-02-14 | Ireco, Inc. | Cotter pin guard and retainer |
| US5520490A (en) * | 1995-04-26 | 1996-05-28 | General Motors Corporation | Retainer clip |
| US6368039B2 (en) * | 1999-09-01 | 2002-04-09 | Shop Vac Corporation | Dual function retainer clip |
-
1986
- 1986-04-22 CA CA000507239A patent/CA1269551A/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5388943A (en) * | 1993-10-05 | 1995-02-14 | Ireco, Inc. | Cotter pin guard and retainer |
| US5520490A (en) * | 1995-04-26 | 1996-05-28 | General Motors Corporation | Retainer clip |
| US6368039B2 (en) * | 1999-09-01 | 2002-04-09 | Shop Vac Corporation | Dual function retainer clip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |