US3637034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic scale
Assignee: Individual
•
Filing: 1970-07-06
•
Granted: 1972-01-25
•
Expires: 1990-07-06
Abstract
Abstract There is disclosed a hydraulic weighing scale comprising a base member, a platform member mounted for vertical movement relative to the base member in response to a force being placed upon the platform, a bellows positioned between the platform and the base, lever means operatively connected between the platform and one side of the bellows wherein vertical movement of the platform results in a pressure increase in the bellows, a helically coiled hydraulic tube having either a horizontal or vertical axis wherein the first end of the tube is connected to the second side of the bellows and an indicator connected to the second end of the hydraulic tube wherein the pressure increase from the bellows causes an expansion of the hydraulic tube thereby causing a displacement of the indicator means, the displacement being proportional to the downward force on the platform. A second embodiment discloses a hydraulic scale wherein the helically coiled hydraulic tube is replaced by a hydraulic tube helically coiled in a clock spring configuration. As in the first embodiment, one end of the hydraulic tube is connected to the bellows and the second end of the hydraulic tube is connected to an indicator. In either of the two embodiments, the indicator and the helically coiled hydraulic tube may be located between the base member and the platform member or they may be located remotely to or externally from the platform member and base member.
Inventors
- 👤 Chester H Wickenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:06
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/44
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
177 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a horizontal axis, positioned between said platform and said base, said bellows comprising a first end and a secoNd end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; conduit means, said conduit means having a first end and a second end, said first end of said conduit means being connected to said second end of said bellows, said conduit means having a diameter less than the diameter of said bellows; shaft means connected to said second end of said conduit means; and a rotating disclike indicator dial connected to said shaft means wherein said pressure increase from said bellows causes an expansion of said conduit thereby rotating said shaft and said dial, said rotation being proportional to said downward force on said platform.
Claim 2
Dependent Claim
177 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a horizontal axis, positioned between said platform and said base, said bellows comprising a first end and a secoNd end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; conduit means, said conduit means having a first end and a second end, said first end of said conduit means being connected to said second end of said bellows, said conduit means having a diameter less than the diameter of said bellows; shaft means connected to said second end of said conduit means; and a rotating disclike indicator dial connected to said shaft means wherein said pressure increase from said bellows causes an expansion of said conduit thereby rotating said shaft and said dial, said rotation being proportional to said downward force on said platform.
Claim 3
Dependent Claim
14 words
The hydraulic scale of claim 1 wherein said conduit means comprises a Bourdon tube.
Claim 4
Dependent Claim
30 words
The hydraulic system of claim 2 further comprising gear means connected between said shaft means and said indicator dial wherein said shaft means and said indicator dials are angularly displaced.
Claim 5
Dependent Claim
29 words
The hydraulic scale of claim 3 wherein said shaft means is disposed horizontally to said platform and wherein the axis of said dial is disposed perpendicularly to said platform.
Claim 6
Dependent Claim
23 words
The hydraulic scale of claim 2 wherein said diameter of said disclike indicator dial is substantially equal to the width of said platform.
Claim 7
Dependent Claim
153 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a helically coiled hydraulic tube, having a horizontal axis, a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 8
Dependent Claim
153 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a helically coiled hydraulic tube, having a horizontal axis, a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 9
Dependent Claim
53 words
The hydraulic scale of claim 6 wherein said indicator means comprises: shaft means rotatably connected to said second end of said hydraulic tube; and an indicator dial rotatably connected to said shaft means wherein rotation of said shaft means causes a rotation of said dial proportional to said downward force on said platform.
Claim 10
Dependent Claim
18 words
The hydraulic scale of claim 7 wherein said shaft means is horizontally disposed with respect to said platform.
Claim 11
Dependent Claim
21 words
The hydraulic scale of claim 8 wherein said axis of said hydraulic tube and said axis of said shaft means coincide.
Claim 12
Dependent Claim
206 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a first end and a second end, said bellows being horizontally disposed with respect to said platform; lever means operatively connected between said platform and first end of said bellows wherein said vertical movement of said platform results in a horizontal displacement of said bellows; shaft means, horizontally disposed with respect to said platform and mounted for rotatable motion; a disclike indicator dial rotatably mounted on a vertical shaft; gear means connected between said horizontal shaft and said vertical shaft wherein rotation of said horizontal shaft causes rotation of said indicator dial; and a Bourdon tube helically coiled around said horizontal shaft means having a first end and a second end, said first end of said tube being connected to said second end of said bellows and saId second end of said tube being connected to said horizontal shaft means wherein said horizontal displacement of said bellows causes an expansion of said Bourdon tube thereby causing a rotation of said indicator dial, said rotation being proportional to said downward force on said platform.
Claim 13
Dependent Claim
206 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a first end and a second end, said bellows being horizontally disposed with respect to said platform; lever means operatively connected between said platform and first end of said bellows wherein said vertical movement of said platform results in a horizontal displacement of said bellows; shaft means, horizontally disposed with respect to said platform and mounted for rotatable motion; a disclike indicator dial rotatably mounted on a vertical shaft; gear means connected between said horizontal shaft and said vertical shaft wherein rotation of said horizontal shaft causes rotation of said indicator dial; and a Bourdon tube helically coiled around said horizontal shaft means having a first end and a second end, said first end of said tube being connected to said second end of said bellows and saId second end of said tube being connected to said horizontal shaft means wherein said horizontal displacement of said bellows causes an expansion of said Bourdon tube thereby causing a rotation of said indicator dial, said rotation being proportional to said downward force on said platform.
Claim 14
Dependent Claim
23 words
The hydraulic scale of claim 10 wherein the diameter of said disclike indicator dial is substantially equal to the width of said platform.
Claim 15
Dependent Claim
21 words
The hydraulic scale of claim 11 wherein said diameter of said Bourdon tube is less than the diameter of said bellows.
Claim 16
Dependent Claim
164 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a horizontal axis, positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a hydraulic tube helically coiled in a clock spring configuration, about a vertical axis, having a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said hydraulic tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 17
Dependent Claim
164 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a horizontal axis, positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a hydraulic tube helically coiled in a clock spring configuration, about a vertical axis, having a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said hydraulic tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 18
Dependent Claim
53 words
The hydraulic scale of claim 6 wherein said indicator means comprises: shaft means rotatably connected to said second end of said hydraulic tube; and an indicator dial rotatably connected to said shaft means wherein rotation of said shaft means causes a rotation of said dial proportional to said downward force on said platform.
Claim 19
Dependent Claim
18 words
The hydraulic scale of claim 12 wherein said shaft means is vertically disposed with respect to said platform.
Claim 20
Dependent Claim
30 words
The hydraulic scale of claim 13 wherein said indicator dial comprises a rotatable disc and wherein the diameter of said disc is substantially equal to the width of said platform.
Claim 21
Dependent Claim
21 words
The hydraulic scale of claim 14 wherein said diameter of said hydraulic tube if less than the diameter of said bellows.
Claim 22
Dependent Claim
188 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a first end and a second end, said bellows being horizontally disposed with respect to said platform; lever means operatively connected between said platform and first end of said bellows wherein said vertical movement of said platform results in a horizontal displacement of said bellows; shaft means, vertically disposed with respect to said platform and mounted for rotatable motion; a disclike indicator dial rotatably mounted on said vertical shaft; and a helical Bourdon tube of flat clock spring configuration, coiled about said vertical shaft means, having a first end and a second end, said first end of said tube being connected to said second end of said bellows and said second end of said tube being connected to said rotatable shaft means wherein said horizontal displacement of said bellows causes an expansion of said Bourdon tube thereby causing a rotation of said indicator dial, said rotation being proportional to said downward force on said platform.
Claim 23
Dependent Claim
188 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows, having a first end and a second end, said bellows being horizontally disposed with respect to said platform; lever means operatively connected between said platform and first end of said bellows wherein said vertical movement of said platform results in a horizontal displacement of said bellows; shaft means, vertically disposed with respect to said platform and mounted for rotatable motion; a disclike indicator dial rotatably mounted on said vertical shaft; and a helical Bourdon tube of flat clock spring configuration, coiled about said vertical shaft means, having a first end and a second end, said first end of said tube being connected to said second end of said bellows and said second end of said tube being connected to said rotatable shaft means wherein said horizontal displacement of said bellows causes an expansion of said Bourdon tube thereby causing a rotation of said indicator dial, said rotation being proportional to said downward force on said platform.
Claim 24
Dependent Claim
157 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows having a horizontal axis positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platfoRm and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a helically coiled hydraulic tube, having a vertical axis, a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 25
Dependent Claim
157 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows having a horizontal axis positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platfoRm and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a helically coiled hydraulic tube, having a vertical axis, a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 26
Dependent Claim
53 words
The hydraulic scale of claim 19 wherein said indicator means comprises: shaft means rotatably connected to said second end of said hydraulic tube; and an indicator dial rotatably connected to said shaft means wherein rotation of said shaft means causes a rotation of said dial proportional to said downward force on said platform.
Claim 27
Dependent Claim
18 words
The hydraulic scale of claim 20 wherein said shaft means is vertically disposed with respect to said platform.
Claim 28
Dependent Claim
21 words
The hydraulic scale of claim 21 wherein said axis of said hydraulic tube and said axis of said shaft means coincide.
Claim 29
Dependent Claim
154 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows having a horizontal axis, positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a helically coiled hydraulic tube having a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 30
Dependent Claim
154 words
A hydraulic weighing scale comprising: a base member; a platform member mounted for vertical movement relative to said base member in response to a force being placed upon said platform; a bellows having a horizontal axis, positioned between said platform and said base, said bellows comprising a first end and a second end; lever means operatively connected between said platform and said first end of said bellows wherein said vertical movement of said platform results in a pressure increase in said bellows; a helically coiled hydraulic tube having a first end and a second end, said first end of said tube being connected to said second end of said bellows; and indicator means connected to said second end of said tube wherein said pressure increase from said bellows causes an expansion of said hydraulic tube thereby causing a displacement of said indicator means, said displacement being proportional to said downward force on said platform.
Claim 31
Dependent Claim
29 words
The hydraulic scale of claim 23 wherein said helically coiled hydraulic tube is located external to said base member and said platform member thereby providing an external indicator means.
Claim 32
Dependent Claim
54 words
The hydraulic scale of claim 24 wherein said external indicator means comprises: shaft means rotatably connected to said second end of said hydraulic tube; and an indicator dial rotatably connected to said shaft means wherein rotation of said shaft means causes a rotation of said dial proportional to said downward force on said platform.
Claim 33
Dependent Claim
34 words
The hydraulic scale of claim 19 wherein said hydraulic tube helically coiled in a clock spring configuration is located external to said base member and said platform member thereby providing an external indicator means.
Claim 34
Dependent Claim
54 words
The hydraulic scale of claim 26 wherein said external indicator means comprises: shaft means rotatably connected to said second end of said hydraulic tube; and an indicator dial rotatably connected to said shaft means wherein rotation of said shaft means causes a rotation of said dial proportional to said downward force on said platform.
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) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |