Patent US3656818A successfully refreshed from Google Patents.
US3656818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-damped guide rail
Assignee: AB Dick Co
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Filing: 1970-05-08
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Granted: 1972-04-18
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Expires: 1990-05-08
Abstract
Abstract A vibration resistant guide for an ink jet printing head that moves back and forth across a paper web, comprising a flat rail supported at opposite ends and having guideways extending along opposite edges to guide the printing head, the center of the rail having a recess in its under surface. A damping bar composed of a rubber matrix with lead shot embedded therein is disposed in the recess to damp out vibrations of the rail. The damping bar fits loosely within the recess, and is retained therein by a diaphragm that covers the recess.
Inventors
- 👤 Vincent E Bischoff
- 👤 Paul S Colecchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:03
CPC Classifications
B; B41; B41J; B41J19/00; B41J19/04; B41J19/06
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
62 words
A guide for a printing head comprising: an elongated member having an unsupported portion for guiding a printing head back and forth across a printing medium; and a damping member which includes a multiplicity of items of a material at least about the density of iron embedded in elastic material, said damping member coupled to said unsupported portion of said elongated member.
Claim 2
Dependent Claim
62 words
A guide for a printing head comprising: an elongated member having an unsupported portion for guiding a printing head back and forth across a printing medium; and a damping member which includes a multiplicity of items of a material at least about the density of iron embedded in elastic material, said damping member coupled to said unsupported portion of said elongated member.
Claim 3
Dependent Claim
55 words
The guide described in claim 1 wherein: said elongated member comprises a substantially flat bar with guides extending along opposite edges, and with a recess formed in one face; and said damping member is disposed in said recess; and including a diaphragm of flexible material disposed to cover said recess to hold said matrix therein.
Claim 4
Dependent Claim
30 words
The guide described in claim 2 wherein: said bar is oriented with one face facing primarily downward, and said recess is formed in said downward facing face of said bar.
Claim 5
Dependent Claim
95 words
A guide for a printing head comprising: an elongated member having a center portion for guiding a printing head back and forth across a printing medium, and having end portions; means for supporting said end portions of said member; means defining a chamber at said center portion of said member; a resilient material disposed in said chamber; and a multiplicity of particles embedded in said resilient material, so that said resilient material can couple said particles to said center portion of said elongated member, said particles having a higher specific gravity than said resilient material.
Claim 6
Dependent Claim
95 words
A guide for a printing head comprising: an elongated member having a center portion for guiding a printing head back and forth across a printing medium, and having end portions; means for supporting said end portions of said member; means defining a chamber at said center portion of said member; a resilient material disposed in said chamber; and a multiplicity of particles embedded in said resilient material, so that said resilient material can couple said particles to said center portion of said elongated member, said particles having a higher specific gravity than said resilient material.
Claim 7
Dependent Claim
29 words
The guide described in claim 4 wherein: said resilient material comprises a matrix of elastomeric material; and said multiplicity of particles comprises substantially lead shot embedded in said matrix.
Claim 8
Dependent Claim
114 words
Apparatus for guiding a printing head in back and forth motion comprising: an elongated guide member having end portions and having a center portion for guiding a printing head in back and forth motion; means for supporting said end portions of said member; means defining a recess in a lower surface of said member; a first material disposed in said Recess free of attachment to said elongated member; and a diaphragm mounted on said elongated member and extending under said recess to support said first material, said diaphragm constructed of a thin resilient material to springingly support said material on said member so that said material can deflect downwardly with respect to said member.
Claim 9
Dependent Claim
114 words
Apparatus for guiding a printing head in back and forth motion comprising: an elongated guide member having end portions and having a center portion for guiding a printing head in back and forth motion; means for supporting said end portions of said member; means defining a recess in a lower surface of said member; a first material disposed in said Recess free of attachment to said elongated member; and a diaphragm mounted on said elongated member and extending under said recess to support said first material, said diaphragm constructed of a thin resilient material to springingly support said material on said member so that said material can deflect downwardly with respect to said member.
Claim 10
Dependent Claim
119 words
A printing machine comprising: means for holding a printing medium; an elongated guide bar having opposite end portions and having a recess at least in center portion thereof; means for supporting said opposite end portions of said guide bar so that it extends across said means for holding a printing medium; a printing head; means for supporting said printing head in movement along said guide bar; a first material of specific gravity at least about as great as that of iron disposed in said recess; and a block of rubber-like material fixed to said first material and coupling it to said guide bar, to permit movement of said first material relative to said center portion of said guide bar.
Claim 11
Dependent Claim
119 words
A printing machine comprising: means for holding a printing medium; an elongated guide bar having opposite end portions and having a recess at least in center portion thereof; means for supporting said opposite end portions of said guide bar so that it extends across said means for holding a printing medium; a printing head; means for supporting said printing head in movement along said guide bar; a first material of specific gravity at least about as great as that of iron disposed in said recess; and a block of rubber-like material fixed to said first material and coupling it to said guide bar, to permit movement of said first material relative to said center portion of said guide bar.
Claim 12
Dependent Claim
57 words
The printing machine described in claim 7 wherein: said recess is formed on an underside of said guide bar, and including a diaphragm extending across said recess and having opposite ends mounted on said bar, said diaphragm constructed of a thin resilient material to permit downward deflection of said first material and block relative to said bar.
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) | 1975-04-18 | 1975-10-18 | 1976-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-18 | 1979-10-18 | 1980-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-18 | 1983-10-18 | 1984-04-18 | $7700.00 | Window Closed / Lapsed |