US3705647A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for checking the circumferential edge surface and the diameter of disc-shaped objects
Assignee: Svenska Metallverken AB
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Filing: 1970-12-22
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Granted: 1972-12-12
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Expires: 1990-12-22
Abstract
Abstract An apparatus for checking disc-like objects for edge defects and deviations in the diameter of said objects from a pre-determined standard diameter. The apparatus includes a movement path for the objects being checked which is defined by two support members. The object supporting members are arranged to move in a parallelistic pattern of movement in relation to each other and are constantly biassed in a direction towards each other, the distance between said members being maintained at a pre-fixed magnitude by the object present in the movement path defined by said members. Also arranged in the vicinity of the movement path of said object is a pivot member, which is caused to be located in said movement path upon axial movement of one of said support members, whereby a defective object located in said path and contributing to said axial movement is pivoted over said pivot and rejected by the apparatus.
Inventors
- 👤 Ake Torgny Bergavist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:43
CPC Classifications
B; B07; B07C; B07C5/00; B07C5/04; B07C5/06; B07C5/065
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
250 words
An apparatus for checking the circumferential edge surface and the diameter of disc-like objects, characterized by a chutelike structure which is flanked by two spaced, support members which are movable relative to each other and along which objects are intended to be passed one at a time while rotating around their center axis under the influence of a driving force created by the relative movement between the two support members, of which two members one presents a support and rolling surface which engages at least a portion of the peripheral edge surface of a perfectly shaped object while the other of said two members presents, when viewed in section, a tapering groove, the respective flank surfaces of which form a supporting and rolling surface for respective corner edge portions of the object being checked, wherein at least one of said support members is movable in a parallelistic movement pattern in relation to the opposite support member to urge an object in said path towards said opposite support member and to subject said object to a moment of force with the fulcrum point situated on said opposite support member, and wherein located between the support members on the side of the movement path for a correctly shaped disc is a fulcrum means which extends along the said support and rolling surfaces and which is in the form of a ridge, an oval raised portion or the like over which a defective disc is swung out of the chute as a reject.
Claim 2
Independent Claim
250 words
An apparatus for checking the circumferential edge surface and the diameter of disc-like objects, characterized by a chutelike structure which is flanked by two spaced, support members which are movable relative to each other and along which objects are intended to be passed one at a time while rotating around their center axis under the influence of a driving force created by the relative movement between the two support members, of which two members one presents a support and rolling surface which engages at least a portion of the peripheral edge surface of a perfectly shaped object while the other of said two members presents, when viewed in section, a tapering groove, the respective flank surfaces of which form a supporting and rolling surface for respective corner edge portions of the object being checked, wherein at least one of said support members is movable in a parallelistic movement pattern in relation to the opposite support member to urge an object in said path towards said opposite support member and to subject said object to a moment of force with the fulcrum point situated on said opposite support member, and wherein located between the support members on the side of the movement path for a correctly shaped disc is a fulcrum means which extends along the said support and rolling surfaces and which is in the form of a ridge, an oval raised portion or the like over which a defective disc is swung out of the chute as a reject.
Claim 3
Dependent Claim
84 words
An apparatus according to claim 1, characterized in that the chute or like structure is provided with an inlet for unchecked objects and an outlet for checked and accepted objects, catch means being arranged to cooperate with said inlet to prevent the infeed of objects to the chute while an object is being checked therein, said catch means being arranged to be actuated out of its blocking position by at least one said support means as soon as an object has left the chute.
Claim 4
Dependent Claim
22 words
An apparatus according to claim 1, characterized in that the support members and the support and rolling surfaces associated therewith extend linearly.
Claim 5
Dependent Claim
34 words
An apparatus according to claim 1, characterized in that the support members and the support and rolling surfaces associated therewith have an arcuate extension, the center axes of respective arcs coinciding with each other.
Claim 6
Dependent Claim
27 words
An apparatus according to claim 4, characterized in that one support member is non-rotatable and that the other support member is rotatable about said common center axis.
Claim 7
Dependent Claim
40 words
An apparatus according to claim 5, characterized in that the support and rolling surface of one support member extends along an arc of larger diameter than the diameters of the respective support and rolling surfaces of the other support member.
Claim 8
Dependent Claim
76 words
An apparatus according to claim 6, characterized in that the support and rolling surface of said one support member forms the support and rolling surface for at least a portion of the cylindrical edge portion of a correctly shaped object, and that the other support member consists of a pulley having an annular groove around the periphery thereof, the flanking surfaces of said groove forming the support surfaces for the sharp corner edges of the object.
Claim 9
Dependent Claim
39 words
An apparatus according to claim 7, characterized in that the pulley is mounted on a shaft which is arranged for rotary and translatory movement and which is concentric with the support and rolling surface of said one support member.
Claim 10
Dependent Claim
51 words
An apparatus according to claim 8, characterized in that the shaft is arranged to be yieldingly actuated for movement in an axial direction through a distance corresponding to the shortened distance between the support and rolling surfaces of the pulley and the support and rolling surface of said other support member.
Claim 11
Dependent Claim
45 words
An apparatus according to claim 7, characterized in the support and rolling surface of said one support member is stationarily arranged substantially in a radial plane relatiVe to the geometric axis of the shaft and that the pulley is movable between several such radial planes.
Claim 12
Dependent Claim
57 words
An apparatus according to claim 7, characterized in that extending concentrically with the rolling surface of said one support surface is a raised circular fulcrum means which is located to one side of the movement path travelled by a correctly formed object between the support members and which projects into the individual movement path imperfectly formed object.
Claim 13
Dependent Claim
29 words
An apparatus according to claim 4, characterized in that at least one of the support and rolling surfaces extends obliquely to the common center axis of the support members.
Claim 14
Dependent Claim
38 words
An apparatus according to claim 4, characterized in that said one support member is provided with an object carrying surface, said surface suitably being located in the vicinity of the support and rolling surface of said support member.
Claim 15
Dependent Claim
57 words
An apparatus according to claim 4, characterized in that the support and rolling surface of said one support member extends along an arc of less than 360*, and that guide rails are connected substantially tangentially to the ends of said arc, said rails defining the inlet and outlet respectively of the chute defined by the support members.
Claim 16
Dependent Claim
36 words
An apparatus according to claim 14, characterized in that the rails are inclined downwardly said outlet, whereby checked and accepted objects are able to move under the force of gravity down to an underlying collecting station.
Claim 17
Dependent Claim
13 words
An apparatus according to claim 4, characterized in that the shaft is powered.
Claim 18
Dependent Claim
47 words
An apparatus according to claim 2, characterized in that the catch member consists of a wire spring which is attached at one end to said one support member and the other end of which is actuated by axial movement of the pulley to unblock the object inlet.
Claim 19
Dependent Claim
19 words
An apparatus according to claim 3, characterized in that the apparatus is adapted for checking coins or coin blanks.
References Cited (Backward Citations)
US2543802A
Cited
US2716487A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |