Patent US4844522A successfully refreshed from Google Patents.
US4844522A
Expired / Lapsed
US
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Latch assembly
Assignee: Newfrey LLC
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Filing: 1987-11-02
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Granted: 1989-07-04
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Expires: 2007-11-02
Abstract
Abstract A latch assembly for a lock adaptable for use with inswinging, outswinging, right hand and left hand mounted doors includes a latchcase assembly having a vertically extending slot. A bolt is mounted for sliding movement within the latchcase. A first rotatable cam having a hub is mounted within the vertical slot of said latchcase assembly for sliding the bolt between bolt engaged and disengaged positions. The height of the latchcase slot is larger then the diameter of the hub portion of the cam to accommodate limited vertical movement of the cam within the slot. The vertical position of the cam is shifted within the vertical slot to maintain the horizontal center line of the cam in a predetermined spaced vertical position relative to the horizontal center line of the bolt.
Inventors
- 👤 Stanley Pechar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 15:18
CPC Classifications
E; E05; E05B; E05B55/00; E05B63/00; E05B63/04; E05C; E05C1/00; E05C1/08; E05C1/12; E05C1/16; E05B55/005; E05B55/12; Y; Y10; Y10S; Y10S292/00; Y10S292/60; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/097; Y10T292/0977; Y10T292/1097; Y10T292/62
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
232 words
A latch assembly for a lock adaptable for use with inswinging, outswinging, right hand and left hand mounted doors, said assembly including: housing means defining a latchcase assembly and including a vertically extending slot; a bolt mounted for sliding movement within said latchcase assembly; a first rotatable cam having a generally cylindrical hub portion mounted within the vertical slot of said latchcase assembly for sliding said bolt between bolt engaged and disengaged positions, with the height of the latchcase assembly slot being greater than the diameter of the hub portion of the cam to accommodate limited vertical movement of the cam within the slot; and means for shifting the cam within the vertical slot to maintain the horizontal center line of the cam in a predetermined spaced vertical position relative to the horizontal center line of the bolt, said shifting means comprising a sliding plate mounted for movement relative to said latchcase assembly and including means defining a longitudinally extending slot functioning as a bearing surface for said cam hub portion, with the sliding plate being movable with said cam as the cam is shifted within the vertical slot of said latchcase assembly, said sliding plate having at least one finger extending towards said rotatable cam and selectively engagable therewith, with rotation of said cam into engagement with said finger resulting in sliding movement of said plate relative to said latchcase assembly.
Claim 2
Dependent Claim
232 words
A latch assembly for a lock adaptable for use with inswinging, outswinging, right hand and left hand mounted doors, said assembly including: housing means defining a latchcase assembly and including a vertically extending slot; a bolt mounted for sliding movement within said latchcase assembly; a first rotatable cam having a generally cylindrical hub portion mounted within the vertical slot of said latchcase assembly for sliding said bolt between bolt engaged and disengaged positions, with the height of the latchcase assembly slot being greater than the diameter of the hub portion of the cam to accommodate limited vertical movement of the cam within the slot; and means for shifting the cam within the vertical slot to maintain the horizontal center line of the cam in a predetermined spaced vertical position relative to the horizontal center line of the bolt, said shifting means comprising a sliding plate mounted for movement relative to said latchcase assembly and including means defining a longitudinally extending slot functioning as a bearing surface for said cam hub portion, with the sliding plate being movable with said cam as the cam is shifted within the vertical slot of said latchcase assembly, said sliding plate having at least one finger extending towards said rotatable cam and selectively engagable therewith, with rotation of said cam into engagement with said finger resulting in sliding movement of said plate relative to said latchcase assembly.
Claim 3
Dependent Claim
107 words
A latch assembly in accordance with claim 1 wherein said sliding plate includes first and second wall means defining vertically spaced notches formed at one end, with the notch defining wall means extending equal distance vertically above and below the horizontal center line of said bolt, and a link member having a pin extending from one end and extending within a selected one of said notches for maintaining the horizontal center line of said plate in spaced relation to the horizontal center line of said bolt; and a second cam connected to the other end of said link and pivotal in response to movement of said bolt.
Claim 4
Dependent Claim
33 words
A latch assembly in accordance with claim 2 wherein said latchcase assembly includes a second vertically extending slot; and means defining a screw guide removably insertable into said second vertically extending latchcase slot.
Claim 5
Dependent Claim
52 words
A latch assembly in accordance with claim 3 wherein said sliding plate includes a second finger vertically spaced from said first finger, with said cam being rotatable into engagement with said first finger when rotated in a clockwise direction and being engageable with said second finger when rotated in a counterclockwise direction.
Claim 6
Dependent Claim
33 words
A latch assembly in accordance with claim 1 wherein said latchcase assembly includes a second vertically extending slot; and means defining a screw guide removably insertable into said second vertically extending latchcase slot.
Claim 7
Dependent Claim
52 words
A latch assembly in accordance with claim 5 wherein said sliding plate includes a second finger vertically spaced from said first finger, with said cam being rotatable into engagement with said first finger when rotated in a clockwise direction and being engageable with said second finger when rotated in a counterclockwise direction.
Claim 8
Dependent Claim
52 words
A latch assembly in accordance with claim 2 wherein said sliding plate includes a second finger vertically spaced from said first finger, with said cam being rotatable into engagement with said first finger hen rotated in a clockwise direction and being engageable with said second finger when rotated in a counterclockwise direction.
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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) | 1992-07-03 | 1993-01-02 | 1993-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-03 | 1997-01-02 | 1997-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-03 | 2001-01-02 | 2001-07-04 | $7700.00 | Window Closed / Lapsed |