Patent US3880345A successfully refreshed from Google Patents.
US3880345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pneumatic drawer apparatus
Assignee: Individual
•
Filing: 1973-10-15
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Granted: 1975-04-29
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Expires: 1993-10-15
Abstract
Abstract A drawer being slideably movable between a first and a second position by a pneumatically powered linkage mechanism or alternatively by a manual operator. A mechanism connected to the drawer for operating a door by movement of the drawer. A spring biased lost motion safety device interposed in the door operating mechanism.
Inventors
- 👤 Walter M Becker
- 👤 Robert W Becker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:04
CPC Classifications
E; E05; E05G; E05G7/00; E05G7/002; E05G7/005; E05G7/008; G; G07; G07G; G07G1/00; G07G1/0018; G07G1/0027; A; A47; A47B; A47B88/00; A47B88/50; A47B88/53
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
124 words
A drawer unit comprising: a frame; a drawer slideably mounted to the frame and having a first and a second position with respect to the frame; a member rigidly attached to the frame having an open space therein which is aligned with said drawer in the second position of the drawer; a door disposed in the open space and mounted on said member for opening or closing the open space; means for moving said door to a closed position when said drawer is in the first position and moving said door to an open position when said drawer is in the second position, and said means for moving includes a lever rigidly connected to said door and operably and pivotally connected to said drawer.
Claim 2
Dependent Claim
124 words
A drawer unit comprising: a frame; a drawer slideably mounted to the frame and having a first and a second position with respect to the frame; a member rigidly attached to the frame having an open space therein which is aligned with said drawer in the second position of the drawer; a door disposed in the open space and mounted on said member for opening or closing the open space; means for moving said door to a closed position when said drawer is in the first position and moving said door to an open position when said drawer is in the second position, and said means for moving includes a lever rigidly connected to said door and operably and pivotally connected to said drawer.
Claim 3
Dependent Claim
32 words
The drawer unit of claim 1 having resilient means operably connected between the door and the drawer to prevent injury should a human hand be caught between the door and said member.
Claim 4
Dependent Claim
23 words
The device of claim 1 including: lost motion means mounted between the drawer and the rigid connection of the lever to the door.
Claim 5
Dependent Claim
16 words
The drawer unit of claim 3 wherein said lost motion means includes a spring biasing means.
Claim 6
Dependent Claim
54 words
The drawer unit of claim 3 wherein said lost motion means comprises: a cylinder connected to the drawer; a retainer disposed within the cylinder; a rod connected to the retainer and extending into one end of the cylinder; and means biasing the retainer in a direction to exert a closing force upon the door.
Claim 7
Dependent Claim
60 words
The drawer unit of claim 1 including: linkage means pivotally connected to said frame at one end and pivotally and opperably connected to said drawer at the other end, and moveable with said drawer to said first and second positions; and motive means for moving said linkage means and thereby said drawer to or from said first and second positions.
Claim 8
Dependent Claim
15 words
The drawer unit of claim 6 wherein said motive means comprises a fluid operated cylinder.
Claim 9
Dependent Claim
22 words
The drawer unit of claim 6 including: alternative means for moving the drawer between the first and second positions of the drawer.
Claim 10
Dependent Claim
50 words
The drawer unit of claim 8 wherein the alternative means for moving the drawer comprises: a housing attached to said drawer and having an opening therein; a handle for reception into said opening; and means for releasing said linkage from said drawer when said handle is received in said slot.
Claim 11
Dependent Claim
94 words
A drawer unit comprising: a frame; a drawer slideably mounted to said frame and having a first and a second position with respect to said frame; a first means for moving said drawer being connected to said frame and having a connection to said drawer; a second alternative means for moving the drawer including a housing having an opening therein and a removeable handle means for reception into the opening; and means for releasing the connection of thE drawer to the first means for moving upon insertion of said handle means into said housing.
Claim 12
Dependent Claim
94 words
A drawer unit comprising: a frame; a drawer slideably mounted to said frame and having a first and a second position with respect to said frame; a first means for moving said drawer being connected to said frame and having a connection to said drawer; a second alternative means for moving the drawer including a housing having an opening therein and a removeable handle means for reception into the opening; and means for releasing the connection of thE drawer to the first means for moving upon insertion of said handle means into said housing.
Claim 13
Dependent Claim
126 words
The drawer unit of claim 10 wherein said means for releasing the connection of the drawer to the first moving means comprises: a pin connected to the first moving means; a slot in the housing receiving the pin; a bar pivotally attached to the housing; a spring biasing the bar to one position; the handle means being operable to abut one end of the bar and pivot the bar to another position; a slotted portion on the other end of said bar receiving the pin in said one position of the bar to thereby form the connection between the drawer and the first moving means, and the slotted portion being moved from said pin in the other position of said bar to thereby release the pin,
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-28 | 1978-10-28 | 1979-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-28 | 1982-10-28 | 1983-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-28 | 1986-10-28 | 1987-04-29 | $7700.00 | Window Closed / Lapsed |