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US3799280A Expired / Lapsed US ⏱️ 0.0 years remaining

Automatic weighing apparatus including conveyor means

Assignee: Mettler Toledo GmbH Germany
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Filing: 1973-01-09
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Granted: 1974-03-26
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Expires: 1993-01-09
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Abstract

Abstract Automatic weighing apparatus including weighing means, a weighing pan movable between loading and weighing positions remote from and in operative engagement with said weighing means, respectively, and conveyor means for supplying articles to said weighing pan when in the loading position. The conveyor means includes a preliminary vibratory channel portion and an intermediate vibratory portion. First article sensing means are provided for automatically displacing the weighing pan from the loading position to the weighing position upon the supply of an article to the weighing pan, and for simultaneously interrupting operation of said intermediate vibratory conveyor portion. Second article sensing means are operable upon the discharge of an article from the preliminary vibratory channel means for successively reducing the conveying speed of said vibratory channel means between high-speed, low-speed and completely deactivated operating conditions, respectively.

Inventors

  • 👤 M Aarts

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 14:11
CPC Classifications
G; G01; G01G; G01G19/00; G01G19/02; G01G19/03; B; B07; B07C; B07C5/00; B07C5/16; B07C5/18; B65; B65G; B65G23/00; G01G13/00; G01G13/003; B65G2811/00; B65G2811/09; B65G2811/091; B65G2811/093

Claims Analysis

Total Claims: 16
Claim 1
Independent Claim 193 words
Automatic weighing apparatus, comprising a. weighing means (17) for weighing articles; b. a weighing pan (5); c. first conveyor means for conveying articles to said weighing pan when said pan is in an article loading position remote from said weighing means, said first conveyor means including 1. a generally horizontal intermediate member (4); and 2. first vibrating means (7) for vibrating said horizontal member to effect transport of articles thereacross; d. means (10, 11) for displacing said weighing pan between said loading position and a weighing position in operative weighing engagement with said weighing means, said displacing means maintaining said weighing pan, when in the loading position, in common vibratory engagement with said first conveyor means, whereby when said pan is in the loading position, an article discharged by vibration from said first conveyor means is received by and is transported by vibration across said pan; and e. first article sensing means (15, 15'') operable when said article is transported to a given position on said pan for deactivating said vibrating means and for operating said pan displacing means to transport said pan from said article loading position to said article weighing position.
Claim 2
Dependent Claim 193 words
Automatic weighing apparatus, comprising a. weighing means (17) for weighing articles; b. a weighing pan (5); c. first conveyor means for conveying articles to said weighing pan when said pan is in an article loading position remote from said weighing means, said first conveyor means including 1. a generally horizontal intermediate member (4); and 2. first vibrating means (7) for vibrating said horizontal member to effect transport of articles thereacross; d. means (10, 11) for displacing said weighing pan between said loading position and a weighing position in operative weighing engagement with said weighing means, said displacing means maintaining said weighing pan, when in the loading position, in common vibratory engagement with said first conveyor means, whereby when said pan is in the loading position, an article discharged by vibration from said first conveyor means is received by and is transported by vibration across said pan; and e. first article sensing means (15, 15'') operable when said article is transported to a given position on said pan for deactivating said vibrating means and for operating said pan displacing means to transport said pan from said article loading position to said article weighing position.
Claim 3
Dependent Claim 7 words
a source of rectified alternating-current voltage (23);
Claim 4
Dependent Claim 7 words
a source of rectified alternating-current voltage (23);
Claim 5
Dependent Claim 138 words
first vibrating means (7) for vibrating said horizontal member to effect transport of articles thereacross; d. means (10, 11) for displacing said weighing pan between said loading position and a weighing position in operative weighing engagement with said weighing means, said displacing means maintaining said weighing pan, when in the loading position, in common vibratory engagement with said first conveyor means, whereby when said pan is in the loading position, an article discharged by vibration from said first conveyor means is received by and is transported by vibration across said pan; and e. first article sensing means (15, 15'') operable when said article is transported to a given position on said pan for deactivating said vibrating means and for operating said pan displacing means to transport said pan from said article loading position to said article weighing position.
Claim 6
Dependent Claim 138 words
first vibrating means (7) for vibrating said horizontal member to effect transport of articles thereacross; d. means (10, 11) for displacing said weighing pan between said loading position and a weighing position in operative weighing engagement with said weighing means, said displacing means maintaining said weighing pan, when in the loading position, in common vibratory engagement with said first conveyor means, whereby when said pan is in the loading position, an article discharged by vibration from said first conveyor means is received by and is transported by vibration across said pan; and e. first article sensing means (15, 15'') operable when said article is transported to a given position on said pan for deactivating said vibrating means and for operating said pan displacing means to transport said pan from said article loading position to said article weighing position.
Claim 7
Dependent Claim 26 words
Apparatus as defined in claim 1, and further including f. second conveyor means for transporting articles to said first conveyor means, said second conveyor means including
Claim 8
Dependent Claim 73 words
second vibrating means (6) for vibrating said channel at a relatively high rate of vibration; g. second sensing means (14, 14'') for detecting the discharge of an article from said channel; and h. speed control means (21) operable by said second sensing means for initially reducing the speed of operation of said vibratory channel means to a relatively low rate of vibration, and for subsequently de-activating said vibratory channel to an off condition.
Claim 9
Dependent Claim 73 words
second vibrating means (6) for vibrating said channel at a relatively high rate of vibration; g. second sensing means (14, 14'') for detecting the discharge of an article from said channel; and h. speed control means (21) operable by said second sensing means for initially reducing the speed of operation of said vibratory channel means to a relatively low rate of vibration, and for subsequently de-activating said vibratory channel to an off condition.
Claim 10
Dependent Claim 80 words
Apparatus as defined in claim 1, wherein said weighing means includes a bridge support member (18); wherein said first conveying means includes a holder member (8) connected for vibration with said intermediate member, said weighing pan in said loading and weighing positions being in engagement with said holder member and with said bridge support member, respectively; and further wherein said weighing pan displacing means includes a pivotal lever (11) for displacing said weighing pan between said first and second positions.
Claim 11
Dependent Claim 18 words
means connecting said power circuit electrodes and said voltage source in series with said second vibrating means; and
Claim 12
Dependent Claim 18 words
means connecting said power circuit electrodes and said voltage source in series with said second vibrating means; and
Claim 13
Dependent Claim 73 words
Apparatus as defined in claim 3, wherein said weighing pan includes a plurality of parallel pins (9) extending laterally from opposite sides thereof, said holder member containing a plurality of downwardly directed recesses (13) for receiving said pins when said weighing pan is in the loading position, and said bridge support member having a plurality of upwardly facing recesses (16) for receiving said pins when said weighing pan is in the weighing position.
Claim 14
Dependent Claim 126 words
means for supplying operating pulses to said control electrode to render conductive said thyristor, said pulse supplying means including a. a pulse source (A); b. a plurality of successively operable delay means (20) having different delay characteristics, respectively, the output terminals of said delay means being connected with said control electrode; and c. means (21) operable by said second sensing means to successively connect said pulse source to that delay means which establishes the shortest timing conDition and a relatively high vibratory speed of said second vibrating means, to subsequently connect said pulse source to that delay means which establishes an intermediate timing condition and a lower vibratory speed, and to finally connect said pulse source to that delay means which de-activates said second vibrating means.
Claim 15
Dependent Claim 126 words
means for supplying operating pulses to said control electrode to render conductive said thyristor, said pulse supplying means including a. a pulse source (A); b. a plurality of successively operable delay means (20) having different delay characteristics, respectively, the output terminals of said delay means being connected with said control electrode; and c. means (21) operable by said second sensing means to successively connect said pulse source to that delay means which establishes the shortest timing conDition and a relatively high vibratory speed of said second vibrating means, to subsequently connect said pulse source to that delay means which establishes an intermediate timing condition and a lower vibratory speed, and to finally connect said pulse source to that delay means which de-activates said second vibrating means.
Claim 16
Dependent Claim 32 words
Apparatus as defined in claim 3, wherein said weighing pan displacing means includes solenoid means (10) for operating said lever. 6.Apparatus as defined in claim 2, wherein said speed control means comprises

References Cited (Backward Citations)

US2858124A Cited
US3152655A Cited
US3436968A Cited
US3519093A Cited
US3613808A Cited
US3696584A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-03-25 1977-09-24 1978-03-26 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-03-25 1981-09-24 1982-03-26 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-03-25 1985-09-24 1986-03-26 $7700.00 Window Closed / Lapsed

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