US3744282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Office equipment locking device
Assignee: SEKUR IT PROD Inc
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Filing: 1971-11-15
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Granted: 1973-07-10
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Expires: 1991-11-15
Abstract
Abstract A locking device for portable equipment, such as typewriters, adding machines, television sets, etc., comprises a rectangular metal plate adapted to be fastened to the underside of said equipment in substantially completely covering relation to said underside e.g., adjacent the supporting legs thereof. At least one elongated shaft extends at right angles to and below the plate for insertion through a pre-drilled hole in a supporting surface for the piece of equipment. A key-operated lock member engages the shaft below the supporting surface to lock the piece of office equipment to the supporting surface.
Inventors
- 👤 R Hemphill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:26
CPC Classifications
E; E05; E05B; E05B73/00; E05B73/0082; Y; Y10; Y10T; Y10T70/00; Y10T70/50; Y10T70/5009; Y10T70/5611; Y10T70/5854; Y10T70/5867
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
198 words
A locking device for use with office equipment of the type having a substantially rectangular base provided with leg members at the four corners of said base normally adapted to support said equipment on a supporting surface, said locking device comprising a rectangular metallic plate having a substantially uninterrupted surface configuration dimensioned to substantially equal the dimensions of the rectangular base of said office equipment, said rectangular plate being provided with four countersunk round holes at its four corners adapted to receive bolts for thread engagement with said base at locations adjacent said leg members respectively whereby said plate may be integrated with the base of said office equipment in closely adjacent substantially completely covering relation to said base, an elongated shaft attached to said plate and extending in a direction transverse to the plane of said plate, said shaft being adapted for insertion through a pre-drilled hole in the supporting surface for the piece of office equipment, and a removable key-operated lock member adapted to engage with and lock to that portion of said shaft which extends through and beyond the underside of said supporting surface to lock said piece of office equipment to said supporting surface.
Claim 2
Dependent Claim
198 words
A locking device for use with office equipment of the type having a substantially rectangular base provided with leg members at the four corners of said base normally adapted to support said equipment on a supporting surface, said locking device comprising a rectangular metallic plate having a substantially uninterrupted surface configuration dimensioned to substantially equal the dimensions of the rectangular base of said office equipment, said rectangular plate being provided with four countersunk round holes at its four corners adapted to receive bolts for thread engagement with said base at locations adjacent said leg members respectively whereby said plate may be integrated with the base of said office equipment in closely adjacent substantially completely covering relation to said base, an elongated shaft attached to said plate and extending in a direction transverse to the plane of said plate, said shaft being adapted for insertion through a pre-drilled hole in the supporting surface for the piece of office equipment, and a removable key-operated lock member adapted to engage with and lock to that portion of said shaft which extends through and beyond the underside of said supporting surface to lock said piece of office equipment to said supporting surface.
Claim 3
Dependent Claim
37 words
The device of claim 1 wherein said shaft includes a threaded portion, said lock member comprising a nut threadengaging said threaded portion of said shaft, and a shield structure covering said nut to render it manually inaccessible.
Claim 4
Dependent Claim
57 words
The device of claim 1 wherein said plate includes a centrally located round aperture, said shaft being removably insertable from the upper side of said plate through said aperture and including a head engaging a portion of said plate adjacent the upper surface of said plate to limit downward movement of said shaft relative to said plate.
Claim 5
Dependent Claim
27 words
The device of claim 3 wherein said aperture comprises a countersunk hole having inclined sides, said head being of conical configuration for engagement with said inclined sides.
Claim 6
Dependent Claim
79 words
The device of claim 1 wherein said four round holes in said plate are dimensionally and positionally spaced from one another precisely in accordance with the dimensional and positional spacing between the supporting legs of said piece of office equipment, whereby said plate can be attached to the underside of said piece of office equipment by removing said supporting legs from said piece of equipment and then reattaching said supporting legs to said piece of equipment via said apertures.
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) | 1976-07-09 | 1977-01-08 | 1977-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-09 | 1981-01-08 | 1981-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-09 | 1985-01-08 | 1985-07-10 | $7700.00 | Window Closed / Lapsed |