US4726699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise attenuation in printers
Assignee: Vodafone GmbH
•
Filing: 1986-11-05
•
Granted: 1988-02-23
•
Expires: 2006-11-05
Abstract
Abstract Sound attenuation for a printer which includes impacting print elements and other movable noise producing parts being mounted to a frame and further including a biparted housing; the frame bottom having downwardly extending feet by means of which the printer rests on a support surface; the housing envelops the frame and is provided with openings through which the feet project without touching the print housing; the housing is floatingly suspended on said frame through a plurality of connections each of which includes pins integral with the frame and being circumscribed by an attenuating sleeve which is being connected to the frame by a locking cap seated on the respective pin for holding down the sleeve.
Inventors
- 👤 Ulrich Buschmann
- 👤 Guenter Gomoll
- 👤 Wolfgang Hauslaib
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:18
CPC Classifications
B; B41; B41J; B41J29/00; B41J29/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
146 words
In a printer which includes impacting print elements operated with a high degree of periodicity and other movable noise producing parts being mounted to a frame and further including a housing or case, the improvement comprising: said frame carrying noise producing components, including the impacting print elements operated with a high degree of periodicity, said frame being provided with a plurality of downwardly extending feet by means of which the printer rests on a support surface; said housing circumscribing and enveloping said frame, and having a bottom being provided with a plurality of openings through which respectively said feet project without contacting and engaging the bottom of said print housing; and means for floatingly suspending said housing on said frame and above and out of contact with said support surface including a plurality of connections each of which includes a sound propagation impeding and attenuating element.
Claim 2
Dependent Claim
146 words
In a printer which includes impacting print elements operated with a high degree of periodicity and other movable noise producing parts being mounted to a frame and further including a housing or case, the improvement comprising: said frame carrying noise producing components, including the impacting print elements operated with a high degree of periodicity, said frame being provided with a plurality of downwardly extending feet by means of which the printer rests on a support surface; said housing circumscribing and enveloping said frame, and having a bottom being provided with a plurality of openings through which respectively said feet project without contacting and engaging the bottom of said print housing; and means for floatingly suspending said housing on said frame and above and out of contact with said support surface including a plurality of connections each of which includes a sound propagation impeding and attenuating element.
Claim 3
Dependent Claim
59 words
The improvement as in claim 1, wherein said floating connection is provided through a plurality of connecting pins on said housing, each of said pins being circumscribed by a sound attenuating sleeve serving as said element, the sleeve in turn being connected to said frame; and a locking cap seated on the respective pin for holding down said sleeve.
Claim 4
Dependent Claim
16 words
The improvement as in claim 2, wherein said pins are one piece integral with said housing.
Claim 5
Dependent Claim
18 words
The improvement as in claim 2, wherein said pins each are hollow and slotted to obtain spreadable arms.
Claim 6
Dependent Claim
35 words
The improvement as in claim 1, wherein each attenuating element is provided with a peripheral groove, and being fastened to a round opening in the frame, the opening including rim means projecting into the groove.
Claim 7
Dependent Claim
38 words
The improvement as in claim 1, wherein said housing is biparted to obtain an upper and a lower casing part, there being a sealing element interposed in a gap as defined in-between the upper and lower housing part.
Claim 8
Dependent Claim
29 words
The improvement as in claim 1, there being a sound attenuating skirt extending from the bottom of said housing down and around most of the bottom of the housing.
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) | 1991-02-22 | 1991-08-24 | 1992-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-22 | 1995-08-24 | 1996-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-22 | 1999-08-24 | 2000-02-23 | $7700.00 | Window Closed / Lapsed |