US4763111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door closer having sound generating function
Assignee: Ryobi Ltd
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Filing: 1985-09-05
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Granted: 1988-08-09
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Expires: 2005-09-05
Abstract
Abstract A door closer which is capable of issuing a selected sound or remaining silent when the associated door is opened and which can be mounted on an existing door opener mechanism. Two covers are provided which are mounted on opposite ends of a door closer mechanism body. One of the two covers carries a speaker, while the other carries a sound generating circuit, sensors, and a changeover switch. The changeover switch is used for selecting among, for instance, an alarm sound, a melody chime, and silence. An operating lever for the changeover switch extends through the cover to the outside for ease of selection.
Inventors
- 👤 Isamu Matsuo
- 👤 Junji Mori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:19
CPC Classifications
G; G08; G08B; G08B13/00; G08B13/02; G08B13/08; G08B3/00; G08B3/10
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
218 words
A door closer having sound generating capability, comprising: a door closer mechanism body, a cover shaped to fit over at least a portion of said door closer mechanism body; sound generating means comprising a substrate mounted interiorly of said cover, a sound generating circuit formed on said substrate, a speaker mounted interiorly of said cover, and changeover switch means mounted interiorly of said cover and coupled to said circuit for selecting circuit operation between sound generation of at least one sound and silence; sensor means carried by said cover for sensing opening movement of a door on which said closer is mounted, said sensor means being coupled in said circuit to actuate said circuit when said door is opened; and an operating lever carried by said changeover switch means for making said sound selection, via said changeover switch means, said operating lever extending through said cover for access externally of said cover, and wherein said sensor means includes switch means within said door closer mechanism body and second, relatively moveable means responsive to door opening and closing for changing the state of said sensor switch means, and wherein said cover comprises two cover halves mounted on said closer mechanism body at opposite ends thereof, said cover halves being symmetrical with one another and being interchangeable with one another.
Claim 2
Dependent Claim
218 words
A door closer having sound generating capability, comprising: a door closer mechanism body, a cover shaped to fit over at least a portion of said door closer mechanism body; sound generating means comprising a substrate mounted interiorly of said cover, a sound generating circuit formed on said substrate, a speaker mounted interiorly of said cover, and changeover switch means mounted interiorly of said cover and coupled to said circuit for selecting circuit operation between sound generation of at least one sound and silence; sensor means carried by said cover for sensing opening movement of a door on which said closer is mounted, said sensor means being coupled in said circuit to actuate said circuit when said door is opened; and an operating lever carried by said changeover switch means for making said sound selection, via said changeover switch means, said operating lever extending through said cover for access externally of said cover, and wherein said sensor means includes switch means within said door closer mechanism body and second, relatively moveable means responsive to door opening and closing for changing the state of said sensor switch means, and wherein said cover comprises two cover halves mounted on said closer mechanism body at opposite ends thereof, said cover halves being symmetrical with one another and being interchangeable with one another.
Claim 3
Dependent Claim
35 words
The door closer in claim 1, wherein one of said cover halves carries said speaker and the other of said cover halves carries said sensor means, said sound generating circuit, and said changeover switch means.
Claim 4
Dependent Claim
27 words
The door closer of claim 1, wherein said changeover switch means comprises a triple changover switch for selecting among an alarm sound, a chime melody, and silence.
Claim 5
Dependent Claim
237 words
A door closer having sound generating capability, comprising: a door closer mechanism body, a cover shaped to fit over at least a portion of said door closer mechanism body; sound generating means comprisinq a substrate mounted interiorly of said cover, a sound generating circuit formed on said substrate, a speaker mounted interiorly of said cover, and changeover switch means mounted interiorly of said cover and coupled to said circuit for selecting circuit operation between sound generation of at least one sound and silence; sensor means carried by said cover for sensing opening movement of a door on which said closer is mounted, said sensor means being coupled in said circuit to actuate said circuit when said door is opened; and an operating lever carried by said changeover switch means for making said sound selection, via said changeover switch means, said operating lever extending through said cover for access externally of said cover, and wherein said sensor means includes switch means within said door closer mechanism body and second, relatively moveable means responsive to door opening and closing for changing the state of said sensor switch means, and wherein said sensor means comprises a contact member attached to a lower portion of a pinion shaft of said door closer body to turn in response to opening movement of said door and to contact said switch means connected in said sound generating circuit to actuate said sound generating circuit.
Claim 6
Dependent Claim
237 words
A door closer having sound generating capability, comprising: a door closer mechanism body, a cover shaped to fit over at least a portion of said door closer mechanism body; sound generating means comprisinq a substrate mounted interiorly of said cover, a sound generating circuit formed on said substrate, a speaker mounted interiorly of said cover, and changeover switch means mounted interiorly of said cover and coupled to said circuit for selecting circuit operation between sound generation of at least one sound and silence; sensor means carried by said cover for sensing opening movement of a door on which said closer is mounted, said sensor means being coupled in said circuit to actuate said circuit when said door is opened; and an operating lever carried by said changeover switch means for making said sound selection, via said changeover switch means, said operating lever extending through said cover for access externally of said cover, and wherein said sensor means includes switch means within said door closer mechanism body and second, relatively moveable means responsive to door opening and closing for changing the state of said sensor switch means, and wherein said sensor means comprises a contact member attached to a lower portion of a pinion shaft of said door closer body to turn in response to opening movement of said door and to contact said switch means connected in said sound generating circuit to actuate said sound generating circuit.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |