Patent US3780818A successfully refreshed from Google Patents.
US3780818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Force transmitting apparatus with a single load cell
Assignee: Graco Inc
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Filing: 1972-06-19
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Granted: 1973-12-25
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Expires: 1992-06-19
Abstract
Abstract A force transmitting apparatus that has a generally horizontal weighing platform which transmits the weight of an object to a single load cell. Two similar spaced rigid frame structures connected to the platform by several tension members act as part of the mechanism of force transmission. The load cell itself is supported by a rigid member between two pivotal connections that may be constructed by a groove and knife edge. An overload device may also be employed on the same rigid member to prevent the cell from being subjected to loads above its upper rating. Additional pivotal mountings are used to join the rigid frame members to a supporting rigid frame structure that may be divided into two assemblies or may be one unitary assembly. A pump powered hydraulic cylinder may be used to raise the total structure with its platform and a readout unit may be used to record the force generated by an object on the platform.
Inventors
- 👤 D Lumby
- 👤 W Sofie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:07
CPC Classifications
G; G01; G01G; G01G1/00; G01G1/18; G01G1/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
A force-transmitting apparatus comprising: a generally Horizontal weighing platform; a single load cell actuated by horizontal forces and supported between two pivotal connections; two spaced rigid frame assemblies to support said platform, one of which is connected to each of said two pivotal connections; and rigid supporting means to support said two rigid frame members by two pivotal connections for each of said frame members.
Claim 2
Dependent Claim
65 words
A force-transmitting apparatus comprising: a generally Horizontal weighing platform; a single load cell actuated by horizontal forces and supported between two pivotal connections; two spaced rigid frame assemblies to support said platform, one of which is connected to each of said two pivotal connections; and rigid supporting means to support said two rigid frame members by two pivotal connections for each of said frame members.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 wherein said rigid supporting means is operably engaged by means to move said supporting means in a vertical direction.
Claim 4
Dependent Claim
36 words
The apparatus of claim 1 wherein each of said two pivotal connections supporting said load cell comprise a mounting bracket with a sharpened edged member to engage a groove in each of said rigid frame assemblies.
Claim 5
Dependent Claim
31 words
The apparatus of claim 3 wherein said load cell is mounted on a rigid elongated bar between its pivotal connections and an overload release means is also mounted on said bar.
Claim 6
Dependent Claim
147 words
A force-transmitting and measuring apparatus comprising: a generally horizontal platform adapted to receive an object to be weighed; first and second similar rigid frame assemblies spaced from each other supporting said platform to transmit the vertical load forces of the object placed thereon; a supporting third rigid frame assembly for supporting said first and second assemblies; a plurality of first pivotal joints to pivotally connect each of said first and second frame assemblies to said third assembly; a single load cell having an output signal representative of the load forces on the cell, said cell connected between said first assembly and said second assembly by elongated members extending therebetween, said elongated members coupled to each of said first and second assemblies by a sharpened knife-edge bearing against said assemblies to transfer the horizontal component of relative motion between said first and second assemblies to said load cell.
Claim 7
Dependent Claim
147 words
A force-transmitting and measuring apparatus comprising: a generally horizontal platform adapted to receive an object to be weighed; first and second similar rigid frame assemblies spaced from each other supporting said platform to transmit the vertical load forces of the object placed thereon; a supporting third rigid frame assembly for supporting said first and second assemblies; a plurality of first pivotal joints to pivotally connect each of said first and second frame assemblies to said third assembly; a single load cell having an output signal representative of the load forces on the cell, said cell connected between said first assembly and said second assembly by elongated members extending therebetween, said elongated members coupled to each of said first and second assemblies by a sharpened knife-edge bearing against said assemblies to transfer the horizontal component of relative motion between said first and second assemblies to said load cell.
Claim 8
Dependent Claim
48 words
The apparatus of claim 5 further comprising a preset overload member connected in series with said load cell on one of said elongated members, said overload member acting to disengage load cell forces exceeding said preset amount to prevent excess forces from being placed on said load cell.
Claim 9
Dependent Claim
43 words
The apparatus of claim 5 wherein the first and second rigid frame assemblies each further comprise a horizontal member and a vertical member, with said pivoted joints connected to said horizontal member and said elongated members'' sharpened edges bearing against said vertical members.
Claim 10
Dependent Claim
21 words
The apparatus of claim 7 wherein said vertical members further comprise a grooved portion for receiving said elongated member sharpened edge.
Claim 11
Dependent Claim
29 words
The apparatus of claim 7 further comprising means for converting and displaying said load cell output signal as a quantity representative of the weight of the object being weighed.
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) | 1976-12-24 | 1977-06-25 | 1977-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-24 | 1981-06-25 | 1981-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-24 | 1985-06-25 | 1985-12-25 | $7700.00 | Window Closed / Lapsed |