US5152559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latching mechanism
Assignee: Hartwell Corp
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Filing: 1989-12-04
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Granted: 1992-10-06
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Expires: 2009-12-04
Abstract
Abstract A latching mechanism employing a keeper and hook mechanism. The hook mechanism is mounted by means of an overcenter mechanism to a mounting pin. The mounting pin is arranged in a slot through the body of the hook. The mutual pivot axis of the overcenter mechanism also extends in a locked position to seats located on the body of the hook. There seats are recessed in a direction perpendicular to the mutual pivot axis.
Inventors
- 👤 Bernard Henrichs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:33
CPC Classifications
E; E05; E05C; E05C19/00; E05C19/10; E05C19/12; E05C19/14; E05C19/145; B; B64; B64D; B64D29/00; B64D29/06; Y; Y10; Y10S; Y10S292/00; Y10S292/31; Y10S292/49; Y10T; Y10T292/00; Y10T292/08; Y10T292/0911; Y10T292/0913; Y10T292/0914; Y10T292/0917
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
121 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper and having a hook portion and a body; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis and a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, said body of said hook having a slot receiving said mounting pin.
Claim 2
Dependent Claim
121 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper and having a hook portion and a body; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis and a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, said body of said hook having a slot receiving said mounting pin.
Claim 3
Dependent Claim
20 words
The latch assembly of claim 1 wherein said slot is elongate along the length of said body of said hook.
Claim 4
Dependent Claim
22 words
The latch assembly of claim 1 wherein the sides of said slot constrain lateral movement of said hook at said mounting pin.
Claim 5
Dependent Claim
155 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper and having a hook portion and a body; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis and a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, said body of said hook having a slot receiving said mounting pin, the sides of said slot constraining lateral movement of said hook at said mounting pin and extending to permit movement of said hook without constraint along the length of said body of said hook.
Claim 6
Dependent Claim
155 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper and having a hook portion and a body; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis and a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, said body of said hook having a slot receiving said mounting pin, the sides of said slot constraining lateral movement of said hook at said mounting pin and extending to permit movement of said hook without constraint along the length of said body of said hook.
Claim 7
Dependent Claim
121 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said first and second pivot axes, said hook including a seat stop to receive said boss.
Claim 8
Dependent Claim
121 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said first and second pivot axes, said hook including a seat stop to receive said boss.
Claim 9
Dependent Claim
22 words
The latch assembly of claim 5 wherein said boss is at the mutual pivot axis of said first and second compression links.
Claim 10
Dependent Claim
31 words
The latch assembly of claim 5 wherein said seat stop is recessed into said hook in a direction perpendicular to the mutual pivot axis of said first and second compression links.
Claim 11
Dependent Claim
161 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said firs and second pivot axes, said hook including a seat stop to receive said boss, said boss being at the mutual pivot axis of said first and second compression links and said seat stop being recessed into said hook in a direction perpendicular to the mutual pivot axis of said first and second compression links.
Claim 12
Dependent Claim
161 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said firs and second pivot axes, said hook including a seat stop to receive said boss, said boss being at the mutual pivot axis of said first and second compression links and said seat stop being recessed into said hook in a direction perpendicular to the mutual pivot axis of said first and second compression links.
Claim 13
Dependent Claim
130 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said first and second pivot axes, said hook including a seat stop to receive said boss, said hook having a slot receiving said mounting pin.
Claim 14
Dependent Claim
130 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said first and second pivot axes, said hook including a seat stop to receive said boss, said hook having a slot receiving said mounting pin.
Claim 15
Dependent Claim
17 words
The latch assembly of claim 9 wherein said slot is elongate along the length of said hook.
Claim 16
Dependent Claim
22 words
The latch assembly of claim 9 wherein the sides of said slot constrain lateral movement of said hook at said mounting pin.
Claim 17
Dependent Claim
27 words
The latch assembly of claim 11 wherein said slot extends to permit movement of said hook without constraint along the length of the body of said hook.
Claim 18
Dependent Claim
22 words
The latch assembly of claim 9 wherein said boss is at the mutual pivot axis of said first and second compression links.
Claim 19
Dependent Claim
31 words
The latch assembly of claim 9 wherein said seat stop is recessed into said hook in a direction perpendicular to the mutual pivot axis of said first and second compression links.
Claim 20
Dependent Claim
204 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said first and second pivot axes, said hook including a seat stop to receive said boss, said boss being at the mutual pivot axis of said first and second compression links and said seat stop being recessed into said hook in a direction perpendicular to the mutual pivot axis of said first and second compression links, said hook having a slot receiving said mounting pin, the sides of said slot constraining lateral movement of said hook at said mounting pin and extending to permit movement of said hook without constraint along the length of the body of said hook.
Claim 21
Dependent Claim
204 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper; a mounting pin attached to the other member; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis, a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, and a boss displaced from said first and second pivot axes, said hook including a seat stop to receive said boss, said boss being at the mutual pivot axis of said first and second compression links and said seat stop being recessed into said hook in a direction perpendicular to the mutual pivot axis of said first and second compression links, said hook having a slot receiving said mounting pin, the sides of said slot constraining lateral movement of said hook at said mounting pin and extending to permit movement of said hook without constraint along the length of the body of said hook.
Claim 22
Dependent Claim
160 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper and having a hook portion and a body, said body including a slot extending toward and away from said hook portion; a mounting pin attached to the other member, said mounting pin extending through said slot such that said hook is pivotable about said mounting pin and is slidable relative to said mounting pin; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis and a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, said first, second and mutual pivot axes being free of the other member.
Claim 23
Dependent Claim
160 words
A latching mechanism for joining two members, comprising a keeper attached to one member; a hook adapted to engage said keeper and having a hook portion and a body, said body including a slot extending toward and away from said hook portion; a mounting pin attached to the other member, said mounting pin extending through said slot such that said hook is pivotable about said mounting pin and is slidable relative to said mounting pin; an overcenter linkage including a first compression link pivotally mounted to said mounting pin about a first pivot axis and a second compression link pivotally mounted to said hook about a second pivot axis, said first and second compression links being pivotally linked together at a mutual pivot axis displaced from said first and second pivot axes and constrained to move through a plane containing said first and second axes during latching, said first, second and mutual pivot axes being free of the other member.
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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) | 1995-10-06 | 1996-04-06 | 1996-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-10-06 | 2000-04-06 | 2000-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-10-06 | 2004-04-06 | 2004-10-06 | $7700.00 | Window Closed / Lapsed |