US3923329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door latch device for vehicles
Assignee: Aisin Corp
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Filing: 1974-12-06
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Granted: 1975-12-02
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Expires: 1994-12-06
Abstract
Abstract A door latch device includes a latching mechanism, an outer lever operatively connected to the latching mechanism, a locking lever operable by the locking push button to control the operation of the outer lever, a L-shaped lever normally connected to the outer lever, a pin mounted on the L-shaped lever, an inner lever operable by the inside door handle to transmit the door opening force to the outer lever through the pin and the L-shaped lever, and a ''''childproof'''' locking lever to move the pin in the ''''childproof'''' locking position wherein the inner lever is out of engagement of the pin and in the ''''childproof'''' unlocking position wherein the inner lever is engageable with the pin. Thus, an accidental opening of the door may be prevented by such a ''''childproof'''' operation of the ''''childproof'''' locking lever.
Inventors
- 👤 Nozomu Torii
- 👤 Yoshikatsu Furuya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:28
CPC Classifications
E; E05; E05B; E05B77/00; E05B77/22; E05B77/24; E05B77/26; E05B77/265; E05B85/00; E05B85/20; E05B85/24; E05B85/243; Y; Y10; Y10S; Y10S292/00; Y10S292/27; Y10T; Y10T292/00; Y10T292/08; Y10T292/1043; Y10T292/1044; Y10T292/1045; Y10T292/1047
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
A door latch device for a vehicle comprising in combination: a latch body; a latch member rotatably mounted on said latch body; a pawl rotatably mounted on said latch body and engageable with said latch member; an outer lever operatively connected to said pawl and movable for controlling the rotation thereof; a locking lever mechanically connected to said outer lever for controlling the movement of said outer lever; a first inner lever rotatably mounted on said latch body and mechanically connected to said outer lever for unitary movement therewith, said first inner lever being provided with an elongated slot; a pin slidably fitted within said elongated slot and movable along said elongated slot; a second inner lever pivotally mounted on said latch boDy and operatively connected to said pin; and a ''''childproof'''' lever pivotally mounted on said latch body and operatively connected to said pin, said ''''childproof'''' lever being movable to an unlocked position wherein said second inner lever is engageable with said pin and to a locked position wherein said second inner lever is out of engagement with said pin.
Claim 2
Dependent Claim
181 words
A door latch device for a vehicle comprising in combination: a latch body; a latch member rotatably mounted on said latch body; a pawl rotatably mounted on said latch body and engageable with said latch member; an outer lever operatively connected to said pawl and movable for controlling the rotation thereof; a locking lever mechanically connected to said outer lever for controlling the movement of said outer lever; a first inner lever rotatably mounted on said latch body and mechanically connected to said outer lever for unitary movement therewith, said first inner lever being provided with an elongated slot; a pin slidably fitted within said elongated slot and movable along said elongated slot; a second inner lever pivotally mounted on said latch boDy and operatively connected to said pin; and a ''''childproof'''' lever pivotally mounted on said latch body and operatively connected to said pin, said ''''childproof'''' lever being movable to an unlocked position wherein said second inner lever is engageable with said pin and to a locked position wherein said second inner lever is out of engagement with said pin.
Claim 3
Dependent Claim
30 words
A door latch device of claim 1, wherein said ''''childproof'''' lever is provided with an elongated slot, said pin is moved by engagement with said elongated slot of ''''childproof'''' lever.
Claim 4
Dependent Claim
31 words
A door latch device of claim 1, wherein said second inner lever includes an edge surface with which said pin is engageable when said ''''childproof'''' lever is in its unlocked position.
Claim 5
Dependent Claim
33 words
A door latch device of claim 3, wherein said first inner lever includes a forked end, said outer lever includes an edge portion normally engaged with said forked end for unitary movement therewith.
Claim 6
Dependent Claim
34 words
A door latch device of claim 1, wherein a link is provided between said locking lever and said outer lever so as to transmit the movement of said locking lever to said outer lever.
Claim 7
Dependent Claim
35 words
A door latch device of claim 5, wherein pin means is secured to one end of said link, said outer lever is provided with an elongated slot within which said pin means is slidably fitted.
Claim 8
Dependent Claim
27 words
A door latch device of claim 6, further comprising a lift lever rotatably mounted on said latch body, said lift lever being engageable with said pin means.
Claim 9
Dependent Claim
46 words
A door latch device of claim 7, wherein said lift lever includes a through pin secured to said pawl whereby a rotation of said outer lever causes a rotation of said pawl through said lift lever when said pin means is engageable with said lift lever.
Claim 10
Dependent Claim
25 words
A door latch device of claim 8, wherein said pawl, lift lever, and outer lever are mounted on said latch body coaxially with each other.
Claim 11
Dependent Claim
27 words
A door latch device of claim 1, wherein said second inner lever is movable from inside of the vehicle and mounted coaxially with said first inner lever.
References Cited (Backward Citations)
US3121579A
Cited
US3697105A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-01 | 1979-06-02 | 1979-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-01 | 1983-06-02 | 1983-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-01 | 1987-06-02 | 1987-12-02 | $7700.00 | Window Closed / Lapsed |