US4540206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable draw latch
Assignee: Southco Inc
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Filing: 1984-04-30
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Granted: 1985-09-10
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Expires: 2004-04-30
Abstract
Abstract An adjustable draw latch of the over-center type for latching two closure members has a tension-link cover which is detachably secured pivotally at one end to a keeper mounted on one of the closure members. The cover is secured pivotally at its other end to one end of an adjustable compression link. The other end of the compression link is pivotally attached to a base bracket mounted on the other closure member. The adjustable compression link includes an internally threaded nut which is pivotal within the base bracket, and a T-shaped member having an a cross head of cylindrical shape and an externally threaded stud which extends from the cross head at right angles thereto and is threaded into the pivot nut. The cross head is pivotally secured within the cover at one end thereof. The cover provides a bearing surface for the cross head.
Inventors
- 👤 William R. Frame
- 👤 James H. Vickers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/10; E05C19/12; E05C19/14; Y; Y10; Y10S; Y10S292/00; Y10S292/38; Y10S292/49; Y10S292/60; Y10T; Y10T292/00; Y10T292/08; Y10T292/0886; Y10T292/0887; Y10T292/089
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
209 words
An adjustable draw latch for latching together two closure members, said latch comprising: a. a keeper adapted to be secured to one of said closure members; b. a latch base bracket adapted to be secured to the other of said closure members, said bracket having a central opening therein and having a pair of bearing blocks, one on each side of the opening; c. a pivot nut having an internally-threaded sleeve portion projecting into said central opening of said bracket, said nut having at right angles to its sleeve portion a cylindrical body portion having stub pivot shafts projecting from opposite ends on the center axis thereof and received within said bearing blocks; d. a T-shaped stud member having a cylindrical cross head and an externally threaded stud portion projecting from said cylindrical cross head at right right angles thereto, said externally threaded stud portion being received within the internally threaded sleeve portion of said pivot nut; e. a latch cover having depending sidewalls on opposite sides thereof and said sidewalls being provided with means near one end for pivotally retaining the ends of the cylindrical cross head of said T-shaped stud member, said latch cover having a hook portion at the other end for detachably engaging said keeper.
Claim 2
Dependent Claim
209 words
An adjustable draw latch for latching together two closure members, said latch comprising: a. a keeper adapted to be secured to one of said closure members; b. a latch base bracket adapted to be secured to the other of said closure members, said bracket having a central opening therein and having a pair of bearing blocks, one on each side of the opening; c. a pivot nut having an internally-threaded sleeve portion projecting into said central opening of said bracket, said nut having at right angles to its sleeve portion a cylindrical body portion having stub pivot shafts projecting from opposite ends on the center axis thereof and received within said bearing blocks; d. a T-shaped stud member having a cylindrical cross head and an externally threaded stud portion projecting from said cylindrical cross head at right right angles thereto, said externally threaded stud portion being received within the internally threaded sleeve portion of said pivot nut; e. a latch cover having depending sidewalls on opposite sides thereof and said sidewalls being provided with means near one end for pivotally retaining the ends of the cylindrical cross head of said T-shaped stud member, said latch cover having a hook portion at the other end for detachably engaging said keeper.
Claim 3
Dependent Claim
53 words
An adjustable draw latch according to claim 1 wherein said keeper has a lip portion having an exterior radius, and wherein said hook portion of said cover has an interior radius corresponding to that of the exterior radius of said lip portion of said keeper, for matingly engaging said lip portion during latching.
Claim 4
Dependent Claim
77 words
An adjustable draw latch according to claim 1 wherein said cover at the end remote from said hook portion, is provided with a curved interior surface having an interior radius corresponding to the exterior radius of the cylindrical body portion of said T-shaped stud member, the construction and dimensions being such that during latching said interior radius of said cover provides bearing support for the full length of said cylindrical body portion of said T-shaped stud member.
Claim 5
Dependent Claim
77 words
An adjustable draw latch according to claim 2 wherein said cover, at the end remote from said hook portion, is provided with a curved interior surface having an interior radius corresponding to the exterior radius of the cylindrical body portion of said T-shaped stud member, the construction and dimensions being such that during latching said interior radius of said cover provides bearing support for the full length of said cylindrical body portion of said T-shaped stud member.
Claim 6
Dependent Claim
47 words
An adjustable draw latch according to claim 4 wherein the cross head of the T-member includes stub projections on its opposite ends and wherein the means provided in the cover for pivotally retaining the cross head consists of holes in the sidewalls which receive said stub projections.
Claim 7
Dependent Claim
27 words
An adjustable draw latch according to claim 4 wherein the end of said threaded stud portion is provided with an annular groove having therein a resilient retainer.
Claim 8
Dependent Claim
24 words
An adjustable draw latch according to claim 4 wherein at least a majority of the components of said latch are of molded plastic resin.
Claim 9
Dependent Claim
111 words
An adjustable draw latch for latching together two closure members, said latch comprising: a. a keeper adapted to be secured to one of the closure members; b. a bracket adapted to be attached to the other of said closure members; c. a cover having one end adapted to be pivotally and detachably connected to said keeper; d. an adjustable compression link having one end pivotally secured to the other end of said cover and having its other end pivotally connected to said bracket; e. said adjustable compression link including an internally-threaded nut pivotally connected to said bracket, and a T-shaped member having an externally threaded stud received within said internally-threaded nut.
Claim 10
Dependent Claim
111 words
An adjustable draw latch for latching together two closure members, said latch comprising: a. a keeper adapted to be secured to one of the closure members; b. a bracket adapted to be attached to the other of said closure members; c. a cover having one end adapted to be pivotally and detachably connected to said keeper; d. an adjustable compression link having one end pivotally secured to the other end of said cover and having its other end pivotally connected to said bracket; e. said adjustable compression link including an internally-threaded nut pivotally connected to said bracket, and a T-shaped member having an externally threaded stud received within said internally-threaded nut.
Claim 11
Dependent Claim
27 words
An adjustable draw latch according to claim 8 wherein said T-shaped member includes a cross head of cylindrical shape received within said other end of said cover.
Claim 12
Dependent Claim
33 words
An adjustable draw latch according to claim 9 wherein said other end of said cover has an interior radius corresponding to the exterior radius of said cylindrical cross head of said T-shaped member.
Claim 13
Dependent Claim
38 words
An adjustable draw latch according to claim 10 wherein said keeper has a lip having an exterior radius, and said one end of said cover has an interior radius corresponding to said exterior radius of said keeper lip.
References Cited (Backward Citations)
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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) | 1988-09-09 | 1989-03-11 | 1989-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-09 | 1993-03-11 | 1993-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-09 | 1997-03-11 | 1997-09-10 | $7700.00 | Window Closed / Lapsed |