Patent US4901310A successfully refreshed from Google Patents.
Patent US3729084A successfully refreshed from Google Patents.
US3729084A
Expired / Lapsed
US
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Brick stopping and grouping apparatus
Assignee: Forrest Paschal Machinery Co
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Filing: 1971-03-22
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Granted: 1973-04-24
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Expires: 1991-03-22
Abstract
Abstract Retractive movement of the brick engaging member is controlled by a plurality of piston and cylinder assemblies connected in tandem thereto and displaceable therewith when desired to an inoperative position.
Inventors
- 👤 G Stuart
- 👤 J Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:25
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/74; B65G47/82
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
182 words
An apparatus for stopping and grouping bricks being advanced longitudinally in a row along a pre-determined path of travel comprising: a. a stop member mounted for engagement with a leading one of said bricks and for retractive movement along said path of travel between an initial position and first and second retracted positions; b. first means operatively connected to said stop member for exerting thereon a retarding force of a prescribed, substantially constant desired magnitude yieldingly opposing retractive movement of said member from its initial position to its first retracted position, said first means including a first pneumatic piston and cylinder assembly and a pneumatic circuit for said assembly including a pressure regulator of a rapid-exhaust type which insures that said retarding force does not exceed said prescribed desired magnitude; c. a second means operatively connected to said first means, and through said first means to said stop member, for moving said stop member from its first re-tracted position to its second retracted position in response to the movement of said stop member from said initial position to said first retracted position.
Claim 2
Independent Claim
182 words
An apparatus for stopping and grouping bricks being advanced longitudinally in a row along a pre-determined path of travel comprising: a. a stop member mounted for engagement with a leading one of said bricks and for retractive movement along said path of travel between an initial position and first and second retracted positions; b. first means operatively connected to said stop member for exerting thereon a retarding force of a prescribed, substantially constant desired magnitude yieldingly opposing retractive movement of said member from its initial position to its first retracted position, said first means including a first pneumatic piston and cylinder assembly and a pneumatic circuit for said assembly including a pressure regulator of a rapid-exhaust type which insures that said retarding force does not exceed said prescribed desired magnitude; c. a second means operatively connected to said first means, and through said first means to said stop member, for moving said stop member from its first re-tracted position to its second retracted position in response to the movement of said stop member from said initial position to said first retracted position.
Claim 3
Dependent Claim
42 words
Apparatus as in claim 1, including frame means mounting said brick-engaging member for said retractive movement and for adjustive movement longitudinally of said path of travel, and means carried by said frame means for imparting said adjustive movement to said brick-engaging member.
Claim 4
Dependent Claim
52 words
Apparatus as in claim 1, including frame means mounting said brick-engaging member for movement from its operative position adjacent said path of travel to an inoperative position remote from said path of travel, and means carried by said frame means for moving said member from its operative and to its inoperative position.
Claim 5
Dependent Claim
78 words
Apparatus as in claim 1 wherein said second means includes a second pneumatic piston and cylinder assembly operatively connected in tandem to said first pneumatic piston and cylinder assembly for positively retracting said stop member from its first retracted position to its second retracted position, and wherein said pressure regulator maintains a lesser pressure within said first assembly than in said second assembly during retractive movement of said member from its initial position to its first retractive position.
Claim 6
Dependent Claim
29 words
Apparatus as in claim 4, wherein said assemblies are mounted in opposed axial alignment to each other, and including a coupling fixedly interconnecting the piston-rod componenTs of said assemblies.
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) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |