US3745807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terminal applicator
Assignee: Lear Corp EEDS and Interiors
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Filing: 1972-01-14
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Granted: 1973-07-17
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Expires: 1992-01-14
Abstract
Abstract In a power operated press of the type having a slide head which is reciprocal between retracted and advanced positions toward and away from articles being worked upon, an article feed assembly includes a fluid operated feed finger which is moved toward the slide head so as to feed the articles when the slide head is retracted and which is retracted by the introduction of a pressurized gas into a feed cylinder when the slide head is advanced. The pressurized gas, preferably air, is provided by a pumping action effected by the slide head guide post when the slide head is moved toward the advanced position. Once the feeding finger has been fully retracted, it is slowly advanced in the feeding direction independently of the speed at which the slide head is retracted by the action of a bleed orifice which controls the discharge of the pressurized gas from the feed cylinder.
Inventors
- 👤 R Vogel
- 👤 H Bratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:57
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/04; H; H01; H01R; H01R43/00; H01R43/04; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53478
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
241 words
In an assembly including a power operated slide head adapted to receive an article working tool in mounted relationship thereon, said slide head being power driven between retracted and advanced positions toward and away from a position in which the articles being worked upon are located respectively, and a feed assembly including reciprocal article engaging means and a fluid cylinder with a piston therein for reciprocating the article engaging means in a first feeding direction fo feeding the articles to be worked upon toward said slide head and a second retractive direction opposite to said first feeding direction, fluid pressurizing means connected to said cylinder for introducing fluid under pressure to said piston to urge said piston and article engaging means in said second retractive direction, and forCe exerting means for urging said piston and article engaging means in said first feeding direction, the improvement in said assembly comprising in combination therewith: guide post means comprising a first stationary member stationarily fixed to said assembly, a second movable member attached to said slide head and movable therewith and relative to said first member, and said fluid pressurizing means comprises a sealed pumping chamber defined between said first and second members and conduit means communicating said chamber and said cylinder, whereby said guide post means both guides the movement of said slide head between said retracted and advanced positions and urges said piston and article engaging means in said second retractive direction.
Claim 2
Dependent Claim
241 words
In an assembly including a power operated slide head adapted to receive an article working tool in mounted relationship thereon, said slide head being power driven between retracted and advanced positions toward and away from a position in which the articles being worked upon are located respectively, and a feed assembly including reciprocal article engaging means and a fluid cylinder with a piston therein for reciprocating the article engaging means in a first feeding direction fo feeding the articles to be worked upon toward said slide head and a second retractive direction opposite to said first feeding direction, fluid pressurizing means connected to said cylinder for introducing fluid under pressure to said piston to urge said piston and article engaging means in said second retractive direction, and forCe exerting means for urging said piston and article engaging means in said first feeding direction, the improvement in said assembly comprising in combination therewith: guide post means comprising a first stationary member stationarily fixed to said assembly, a second movable member attached to said slide head and movable therewith and relative to said first member, and said fluid pressurizing means comprises a sealed pumping chamber defined between said first and second members and conduit means communicating said chamber and said cylinder, whereby said guide post means both guides the movement of said slide head between said retracted and advanced positions and urges said piston and article engaging means in said second retractive direction.
Claim 3
Dependent Claim
82 words
In the assembly of claim 1 wherein said first stationary member comprises a cylindrical post which extends in a direction parallel to the direction of movement of said slide head, said second movable member comprises a cylindrical bushing fixed to said slide head and slideably positioned over said post, and a head closing one end of said bushing, said pumping chamber being defined between said head and one end of said post, and fluid inlet and discharge means communicating with said chamber.
Claim 4
Dependent Claim
88 words
In the assembly of claim 2 wherein said fluid inlet and discharge means comprises a passage in said post extending parallel to the axis of said post, one end of said passage communicating with said chamber and said passage also communicating with said conduit means, and a second passage communicating with said passage intermediate its length, said second passage opening to the atmosphere at a location on said post such that said opening is uncovered by said bushing when said slide head is in its fully retracted position.
Claim 5
Dependent Claim
53 words
The assembly of claim 1 wherein said fluid cylinder includes check means for preventing the flow of said fluid from said cylinder and bleed means for restricting the flow of said fluid from said cylinder, said bleed means delaying the movement of said piston and article engaging means in said first feeding direction.
Claim 6
Dependent Claim
34 words
The assembly of claim 1 wherein said force exerting means comprises spring means and said cylinder includes bleed means for delaying the movement of said piston and article engaging means by said spring means.
Claim 7
Dependent Claim
38 words
The assembly of claim 5 wherein said bleed means restricts the flow of fluid from said cylinder, and selectively operable valve means associated with said bleed means for selectively preventing the flow of fluid from said bleed means.
Claim 8
Dependent Claim
42 words
The assembly of claim 1 wherein said piston includes a piston rod extending from said cylinder, said article engaging means being mounted on said rod, and means on said rod for selectively adjusting the length of movement of said article engaging means.
Claim 9
Dependent Claim
10 words
The assembly of claim 1 wherein said fluid is air.
Claim 10
Dependent Claim
245 words
A press assembly comprising: a base member, a plurality of guide posts extending from said base member and stationarily fixed thereto, a slide head adapted to carry an article working tool thereon, said slide head being slideably mounted for movement on said guide posts between retracted and advanced positions toward and away respectively from said base member, first cylinder means comprising a pumping chamber defined by said slide head and at least one of said guide posts, second cylinder means including a piston movable between a first advanced position and a second retracted position, article engaging means movable in response to movement of said piston for moving an article toward said base member when said piston is moved toward said first advanced position and movable away from said base when said piston is moved toward said second retracted position, conduit means communicating said pumping chamber of said first cylinder with said second cylinder, said pumping chamber pressurizing said second cylinder upon movement of said slide head toward said advanced position to urge said pistoN toward said second retracted position, check means for preventing communication of said second cylinder with said pumping chamber when said slide head is moving toward said retracted position, spring means in said second cylinder for urging said piston toward said advanced position, and bleed means for delaying the movement of said piston toward said first advanced position, whereby the movement of said article engaging means toward said base means is delayed.
Claim 11
Dependent Claim
245 words
A press assembly comprising: a base member, a plurality of guide posts extending from said base member and stationarily fixed thereto, a slide head adapted to carry an article working tool thereon, said slide head being slideably mounted for movement on said guide posts between retracted and advanced positions toward and away respectively from said base member, first cylinder means comprising a pumping chamber defined by said slide head and at least one of said guide posts, second cylinder means including a piston movable between a first advanced position and a second retracted position, article engaging means movable in response to movement of said piston for moving an article toward said base member when said piston is moved toward said first advanced position and movable away from said base when said piston is moved toward said second retracted position, conduit means communicating said pumping chamber of said first cylinder with said second cylinder, said pumping chamber pressurizing said second cylinder upon movement of said slide head toward said advanced position to urge said pistoN toward said second retracted position, check means for preventing communication of said second cylinder with said pumping chamber when said slide head is moving toward said retracted position, spring means in said second cylinder for urging said piston toward said advanced position, and bleed means for delaying the movement of said piston toward said first advanced position, whereby the movement of said article engaging means toward said base means is delayed.
Claim 12
Dependent Claim
49 words
The assembly of claim 9 wherein said first cylinder includes a bushing mounted upon said slide head and slideably received on said one of said guide posts, said bushing being closed at one end such that said bushing and said one of said guide post define said pumping chamber.
Claim 13
Dependent Claim
39 words
The assembly of claim 9 including a piston rod connected to the piston of said second cylinder and extending from said second cylinder, and said article engaging means includes a finger attached to said piston rod for movement therewith.
Claim 14
Dependent Claim
110 words
The assembly of claim 9 wherein said one of said guide posts includes fluid inlet and discharge means comprising a passage opening through an end of said guide post into said pumping chamber and extending toward the other end of said post adjacent said base member, said conduit means communicating with the passage adjacent said base member, and a second passage communicating with said passage intermediate its length, and a bushing slideably received upon said one of said guide posts and movable in response to movement of said slide head between advanced and retracted positions, said bushing opening said second passage when said slide head is in said retracted position.
Claim 15
Dependent Claim
47 words
The assembly of claim 9 wherein said bleed means restricts the flow of fluid from said second cylinder when said piston is moving toward said advanced position, and selectively operable valve means for selectively preventing the flow of fluid from said second cylinder through said bleed means.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |