US4768209A
Expired / Lapsed
US
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Magnetic induction counting device
Assignee: Individual
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Filing: 1987-05-28
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Granted: 1988-08-30
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Expires: 2007-05-28
Abstract
Abstract A magnetic induction counting device includes: an inductive source having a permanent magnetic member disposed therein and a structure adapted to be worn on a worker's hand during material handling and counting operations; at least two sensing members made of Hall element for detecting the magnetic field of the inductive source and producing a voltage signal; a plurality of amplifiers respectively connected to the sensing members for receiving and amplifying the voltage signal of the sensing members; a sequential processor coupled with the amplifiers for outputting a pulse signal according to a sequential and unilateral condition of the voltage signal received from the amplifiers; and a counter functionally connected to the sequential processor for performing counting and displaying operations according to the pulse signal; thereby, during material handling and counting operations, automatic counting of the materials can be conveniently carried out in accordance with the movement of the worker's hand wearing the inductive source.
Inventors
- 👤 Ching-Yu Yu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:19
CPC Classifications
G; G06; G06M; G06M1/00; G06M1/08; G06M1/10; G06M1/108; G06M1/102; G06M11/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
201 words
A magnetic induction counting device comprising: an inductive means having a permanent magnetic member disposed therein and formed in a structure adapted to be worn on a worker's hand during material handling and counting operations; a plurality of sensing means made on the basis of Hall elements and adapted to be installed on a working structure for detecting a magnetic field condition of said inductive means according to a movement of the worker's hand during material handling and counting operations and outputting a voltage signal therefrom; a plurality of amplifying means respectively coupled with said sensing means for amplifying and outputting the voltage signal received from said sensing means; a sequential processing means electrically connected to said amplifying means for receiving the amplified voltage and outputting a pulse signal under the condition that the amplified voltage signal is sequentially supplied in a unilateral direction from said sensing means; and a counting means electrically connected to said sequential processing means for performing counting operations according to the pulse signal received from said sequential processing means and displaying the counted numbers; whereby, during material handling and counting operations, automatic counting can be accurately performed in accordance with a movement of the worker's hand.
Claim 2
Dependent Claim
201 words
A magnetic induction counting device comprising: an inductive means having a permanent magnetic member disposed therein and formed in a structure adapted to be worn on a worker's hand during material handling and counting operations; a plurality of sensing means made on the basis of Hall elements and adapted to be installed on a working structure for detecting a magnetic field condition of said inductive means according to a movement of the worker's hand during material handling and counting operations and outputting a voltage signal therefrom; a plurality of amplifying means respectively coupled with said sensing means for amplifying and outputting the voltage signal received from said sensing means; a sequential processing means electrically connected to said amplifying means for receiving the amplified voltage and outputting a pulse signal under the condition that the amplified voltage signal is sequentially supplied in a unilateral direction from said sensing means; and a counting means electrically connected to said sequential processing means for performing counting operations according to the pulse signal received from said sequential processing means and displaying the counted numbers; whereby, during material handling and counting operations, automatic counting can be accurately performed in accordance with a movement of the worker's hand.
Claim 3
Dependent Claim
58 words
A magnetic induction counting device according to claim 1 further comprises a sound generating means functionally connected to said counting means for producing a sound in accordance with a basic counting number preset in said counting means so as to effect a sound reminding function according to the preset basic counting number during material handling and counting operations.
Claim 4
Dependent Claim
45 words
A magnetic induction counting device according to claim 1 further comprises a light indicating means functionally connected to said counting means for effecting a light reminding function during material handling and counting operations in accordance with the basic counting number preset in said counting means.
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) | 1991-08-30 | 1992-02-29 | 1992-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-30 | 1996-02-29 | 1996-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-30 | 2000-02-29 | 2000-08-30 | $7700.00 | Window Closed / Lapsed |