Patent US3277012A successfully refreshed from Google Patents.
US4416477A
Expired / Lapsed
US
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Child-proof latch
Assignee: Individual
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Filing: 1981-11-02
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Granted: 1983-11-22
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Expires: 2001-11-02
Abstract
Abstract A child-proof latch for preventing access by young children to drawers, cabinets and the like.
Inventors
- 👤 Walter Bialobrzeski
- 👤 Paul A. Sperry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:54
CPC Classifications
E; E05; E05B; E05B65/00; E05B65/0014; Y; Y10; Y10S; Y10S292/00; Y10S292/38; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/082; Y10T292/0894; Y10T292/0895; Y10T292/0902
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
219 words
A child-proof latch for attachment to a closure panel of a drawer, cabinet or the like, the closure panel being moveable with respect to a frame or the like, the latch comprising: a support base for mounting on said closure panel; a pair of elongate restraining arms projecting outwardly with respect to said base in generally parallel relation to each other and being separated along their length by a space, each said restraining arm having an end portion including means for abutting said frame, said restraining arms being biased toward said frame to provide for engagement of said frame by both said abutting said panel with respect to said frame to a predetermined distance, each said restraining arm being movable independently of the other restraining arm against said bias away from said frame to disengage said abutting means to permit further opening of said panel only upon simultaneous movement of both restraining arms; and a wall projecting from said base in said space between said restraining arms, said wall having a length sufficient to span the said predetermined distance between said panel and said frame, said wall including an upper surface located above said restraining arms, said wall for preventing single finger simultaneous movement of both said restraining arms by imposition of a downward force on said restraining arms.
Claim 2
Dependent Claim
219 words
A child-proof latch for attachment to a closure panel of a drawer, cabinet or the like, the closure panel being moveable with respect to a frame or the like, the latch comprising: a support base for mounting on said closure panel; a pair of elongate restraining arms projecting outwardly with respect to said base in generally parallel relation to each other and being separated along their length by a space, each said restraining arm having an end portion including means for abutting said frame, said restraining arms being biased toward said frame to provide for engagement of said frame by both said abutting said panel with respect to said frame to a predetermined distance, each said restraining arm being movable independently of the other restraining arm against said bias away from said frame to disengage said abutting means to permit further opening of said panel only upon simultaneous movement of both restraining arms; and a wall projecting from said base in said space between said restraining arms, said wall having a length sufficient to span the said predetermined distance between said panel and said frame, said wall including an upper surface located above said restraining arms, said wall for preventing single finger simultaneous movement of both said restraining arms by imposition of a downward force on said restraining arms.
Claim 3
Dependent Claim
45 words
A child-proof latch according to claim 1 and further including for each said restraining arm, actuating means located beneath said restraining arm and operable by a force directed towards said base for moving said restraining arm downwardly against said bias to disengage said abutting means.
Claim 4
Dependent Claim
72 words
A latch according to claim 1 wherein each said restraining arm includes a base portion and wherein for each said arm said actuating means comprises a tab attached to said base portion, said tab extending beneath and laterally from said restraining arm, said tab including an outer surface for finger engagement and being moveable by said force to pivot said restraining member away from said frame to thereby disengage said abutting means.
Claim 5
Dependent Claim
76 words
A latch according to claim 3 and further including for each said arm a bracket for supporting said restraining arm and said tab, said bracket including a spacer projecting outwardly from said base to provide a space between said tab and said base and including a strut depending downwardly from said spacer for supporting said tab and said restraining arm, said base portion of said restraining arm being mounted on and projecting outwardly from said strut.
Claim 6
Dependent Claim
52 words
A latch according to claim 4 wherein each said bracket comprises a resilient material to provide for flexing of said strut toward said base upon imposition of finger force on said tab to disengage said abutting means and for restoring said strut to its original position upon release of said finger force.
Claim 7
Dependent Claim
26 words
A latch according to claim 5 wherein said base, said restraining arms, said brackets and said tabs comprise resilient polymeric material formed in a single piece.
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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) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |