US3822948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Viscous material applicator,especially paint applicator
Assignee: RUGEL AND LUTZ MASCHINENFAB
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Filing: 1972-05-22
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Granted: 1974-07-09
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Expires: 1992-05-22
Abstract
Abstract A so-called hose or peristaltic pump is designed so that the pump itself limits the maximum pressure of the viscous liquids or the like delivered therefrom. In one embodiment, the peristaltic pump and its accessories, such as the driving motor, are mounted on a rocker arm pivotally supported adjacent one end by a base carrying a circularly curved support member engageable with the hose, so that pinching rollers on a roller carrier forming part of the pump compress the hose against this circularly curved member. The weight of the pump and its accessories constitutes a pressure regulating means. In other embodiments of the invention, the pinching rollers are spring biased radially outwardly so that, responsive to excessive pressure, they will move inwardly against the spring bias. The spring bias may be applied directly to the axles for the pinching rollers or to pivoted levers on which the pinching rollers are mounted.
Inventors
- 👤 A Handl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:04
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/02; B05C17/0217; B05C17/03; B05C17/0333; F; F04; F04B; F04B43/00; F04B43/12; F04B43/1253; F04B43/1276
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
262 words
A viscous material applicator, especially for applying paint to surfaces, comprising, in combination, applicator roller means, a peristaltic pump including a pump frame and a length of hose having an inlet and an outlet, means connecting said applicator roller means to said hose pump outlet, an arcuate guide on said frame having said length of hose extending therealong, motor means, pinching roller means, a motor shaft, a roller carrier driven by said motor shaft, said pinching roller means being attached to said roller carrier for engaging said length of hose to repeatedly squeeze said length of hose against said arcuate guide, hose reshaping roller means attached to said roller carrier for repeatedly reshaping said length of hose following said squeezing whereby the cross-sectional shape of said length of hose is repeatedly varied from said inlet toward said outlet thereof, a base plate fixedly mounting said frame, an elongated rocker arm pivotally mounted at one end on said base plate and having a free end, said rocker arm carrying said motor means and said roller carrier, said rocker arm positioned between the elements carried thereby and said base plate, said rocker arm being swingable about a pivot axis which is in spaced parallel relation to said motor shaft for movement of said motor means and said roller carrier relative to said arcuate guide, and a set screw threadedly engaged in the free end of said rocker arm and engaged with said base plate to limit movement of said motor means and said roller carrier in at least the direction toward said arcuate guide.
Claim 2
Dependent Claim
262 words
A viscous material applicator, especially for applying paint to surfaces, comprising, in combination, applicator roller means, a peristaltic pump including a pump frame and a length of hose having an inlet and an outlet, means connecting said applicator roller means to said hose pump outlet, an arcuate guide on said frame having said length of hose extending therealong, motor means, pinching roller means, a motor shaft, a roller carrier driven by said motor shaft, said pinching roller means being attached to said roller carrier for engaging said length of hose to repeatedly squeeze said length of hose against said arcuate guide, hose reshaping roller means attached to said roller carrier for repeatedly reshaping said length of hose following said squeezing whereby the cross-sectional shape of said length of hose is repeatedly varied from said inlet toward said outlet thereof, a base plate fixedly mounting said frame, an elongated rocker arm pivotally mounted at one end on said base plate and having a free end, said rocker arm carrying said motor means and said roller carrier, said rocker arm positioned between the elements carried thereby and said base plate, said rocker arm being swingable about a pivot axis which is in spaced parallel relation to said motor shaft for movement of said motor means and said roller carrier relative to said arcuate guide, and a set screw threadedly engaged in the free end of said rocker arm and engaged with said base plate to limit movement of said motor means and said roller carrier in at least the direction toward said arcuate guide.
Claim 3
Dependent Claim
86 words
The applicator according to claim 1, wherein said rocker arm and said motor means and said roller carrier mounted thereon constitute pressure limiting means mounting said pinching roller means for movement in a direction away from said arcuate guide responsive to an increase in the pressure at said outlet to decrease the pressure exerted on said length of hose by said pinching roller means, said set screw abutting the upper surface of said base plate to limit movement of said rocker arm toward said base plate.
Claim 4
Dependent Claim
50 words
The applicator according to claim 1, wherein said set screw is threaded into said base plate to secure said motor means and said roller carrier against movement relative to said arcuate guide, and pressure limiting means comprising resilient means yieldingly pressing said pinching rollers against said length of pump hose.
Claim 5
Dependent Claim
82 words
The applicator according to claim 3, wherein said resilient pressure limiting means comprises longitudinal, radially extending guide slots in said roller carrier, stop meAns on said roller carrier, each of said pinching roller means having a shaft, each shaft riding in its respective guide slot, and resilient spring means arranged between said stop means and the respective one of said pinching roller shafts whereby said resilient spring means limit the pressure exerted by said pinching roller means on said length of hose.
Claim 6
Dependent Claim
105 words
The applicator according to claim 3, wherein said resilient pressure limiting means comprise a drag lever for each pinching roller, pivot means for journaling one end of each drag lever to said roller carrier, means for journaling the pinching roller means to the opposite end of its respective drag lever, elongated guide slots extending substantially radially in said roller carrier, a guide pin attached to said drag lever for riding in said guide slots, stop means on said roller carrier, and compression spring means secured between said drag lever and the respective stop means, whereby said pinching rollers may yield against said compression spring means.
Claim 7
Dependent Claim
29 words
The applicator according to claim 5, wherein said elongated guide slots have a curvature with a center of curvature coinciding with the pivot means of the respective drag lever.
Claim 8
Dependent Claim
74 words
The applicator according to claim 3, wherein said resilient pressure limiting means comprise a rocker lever for each pinching roller means, means for pivoting each rocker lever intermediate its ends to the roller carrier, means for journaling the pinching roller means to the respective rocker lever at one end thereof, stop means on said roller carrier, and tension spring means secured between said stop means and the other end of the respective rocker lever.
Claim 9
Dependent Claim
29 words
The applicator according to claim 7, further comprising adjustment means arranged between said stop means and said tension spring means for adjusting the tension of said tension spring means.
Claim 10
Dependent Claim
146 words
The applicator according to claim 1, wherein said means for connecting said applicator roller means to said hose pump outlet comprise a tubular member with apertures therein for wetting said applicator roller means along the outside surface thereof, conduit means arranged between said outlet and said tubular member, bracket means connected to the end of said conduit means, pivoting linkage means connected to said tubular member and to said bracket means, support means for rotatably securing the applicator roller means to the bracket means alongside said tubular member, spring means operatively connected to said bracket means and to said pivoting linkage means for pressing the tubular member against the applicator roller means, and hydraulic pressure means effectively interposed between the end of the conduit means and said tubular member for supporting the pressing of the tubular member by said spring means against the applicator roller means.
Claim 11
Dependent Claim
69 words
The applicator according to claim 9, wherein said hydraulic pressure means comprise two elastically yielding bent tubes which connect the end of said conduit means to the inside of the tubular member and which simultaneously press the tubular member against the applicator roller means in response to the hydraulic pressure built up by said pump in said conduit means whereby a pressure head is produced in said bent tubes.
Claim 12
Dependent Claim
16 words
The applicator according to claim 9, wherein a control valve is arranged in said conduit means.
Claim 13
Dependent Claim
38 words
The applicator according to claim 10, further comprising cleaning means built into said tubular member, said cleaning means including a piston movable back and forth within the tubular member when the latter is disconnected from said conduit means.
Claim 14
Dependent Claim
19 words
The applicator according to claim 9, wherein said tubular member has a surface member facing said applicator roller means.
Claim 15
Dependent Claim
14 words
The applicator according to claim 13, wherein said surface member has a curved shape.
Claim 16
Dependent Claim
80 words
The applicator according to claim 1, wherein said applicator roller means comprises hub means at its ends, and spring means attached to said hub means, said spring means including A plurality of relatively thin pin shaped springs extending substantially tangentially relative to said hub means and also substantially radially outwardly relative to said applicator roller means to the periphery of said applicator roller means, said spring means yielding inwardly whereby a sliding movement of said applicator roller means is prevented.
Claim 17
Dependent Claim
58 words
The applicator according to claim 15, wherein said hub means comprise hub block means with slots therein for receiving the inner ends of said spring means, said spring means having a first bend therein so that the spring means extend substantially tangentially relative to the hub and a second bend at their outer end extending substantially radially outwardly.
Claim 18
Dependent Claim
46 words
The applicator according to claim 15, wherein said applicator roller means comprise bearing bushing means at each end thereof, and means for rigidly interconnecting said hub means to said bearing bushing means, whereby the rotation of the applicator roller means is transmitted to the hub means.
Claim 19
Dependent Claim
21 words
The applicator according to claim 16, further comprising a cover plate attached to said hub block means for covering said slots.
Claim 20
Dependent Claim
17 words
The applicator according to claim 18, wherein said cover plate is glued to said hub block means.
Claim 21
Dependent Claim
258 words
A viscous material applicator, especially for applying paint to surfaces comprising applicator roller means, a hose pump including a pump frame and a length of hose with an inlet and an outlet, means for connecting said applicator roller means to said hose pump outlet, means for locating a portion of said length of hose along part of a circular path in said pump frame, motor means, pinching roller means, a motor shaft, a roller carrier driven by said motor shaft, said pinching roller means being attached to said roller carrier for repeatedly squeezing said length of hose along said circular path, hose reshaping roller means also attached to said roller carrier for repeatedly reshaping said length of hose following said squeezing whereby the crosssectional shape of said length of hose is repeatedly varied from said inlet end toward said outlet end thereof, and pressure limiting means arranged for cooperation with said pinching roller means to limit the extent of the squeezing movement of said pinching roller means, said pressure limiting means comprising a rocker arm, a journal shaft secured to said pump frame, said rocker arm being journaled to said journal shaft, and means for attaching said motor means together with said roller carrier with said pinching roller means and with said reshaping roller means to said rocker arm in such a position that the pinching and reshaping roller means bear against said length of hose along said circular path whereby the weight of the rocker arm and of the means attached thereto act as a pressure limit.
Claim 22
Dependent Claim
258 words
A viscous material applicator, especially for applying paint to surfaces comprising applicator roller means, a hose pump including a pump frame and a length of hose with an inlet and an outlet, means for connecting said applicator roller means to said hose pump outlet, means for locating a portion of said length of hose along part of a circular path in said pump frame, motor means, pinching roller means, a motor shaft, a roller carrier driven by said motor shaft, said pinching roller means being attached to said roller carrier for repeatedly squeezing said length of hose along said circular path, hose reshaping roller means also attached to said roller carrier for repeatedly reshaping said length of hose following said squeezing whereby the crosssectional shape of said length of hose is repeatedly varied from said inlet end toward said outlet end thereof, and pressure limiting means arranged for cooperation with said pinching roller means to limit the extent of the squeezing movement of said pinching roller means, said pressure limiting means comprising a rocker arm, a journal shaft secured to said pump frame, said rocker arm being journaled to said journal shaft, and means for attaching said motor means together with said roller carrier with said pinching roller means and with said reshaping roller means to said rocker arm in such a position that the pinching and reshaping roller means bear against said length of hose along said circular path whereby the weight of the rocker arm and of the means attached thereto act as a pressure limit.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |