US4546549A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable spirit level construction
Assignee: Individual
•
Filing: 1984-07-05
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Granted: 1985-10-15
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Expires: 2004-07-05
Abstract
Abstract A spirit leveling attachment for a power tool which is universally adjustable relative to the tool so as to enable the tool to be located in anyone of a number of selected positions of angularity and maintained in such position by visual reference to the spirit level. A magnetized support member having a partly spherical recess is mounted on the tool. The spirit level is formed with a partly spherical body member which is accommodated in the recess of the magnetized support member, enabling the body member to be magnetically retained in the recess in selected positions of adjustment relative to the support member.
Inventors
- 👤 Terry Duperon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:09
CPC Classifications
B; B25; B25H; B25H1/00; B25H1/0021; B25H1/0078; B25H1/0085; Y; Y10; Y10S; Y10S33/00; Y10S33/01; Y10T; Y10T408/00; Y10T408/21; Y10T408/96
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
161 words
A magnetic and adjustable spirit level construction adapted for use in connection with a hand or other adjustable-position tool, said construction comprising a support member formed of magnetically permeable material, one surface of said support member having a partly spherical recess therein; a partly spherical body member formed on a radius corresponding to that of said recess and accommodated therein, said body member being formed of magnetically permeable material and having an opening therein in communication with an internal cavity in said body member; a liquid occupying said cavity; and a transparent closure for sealing said opening, said liquid being present in such an amount as to enable a gas bubble to form in said cavity, said body member being universally adjustable relative to said support member, and one of said members being magnetized thereby enabling said body member to be retained in said recess in any one of a plurality of selected positions of adjustment relative to said support member.
Claim 2
Dependent Claim
161 words
A magnetic and adjustable spirit level construction adapted for use in connection with a hand or other adjustable-position tool, said construction comprising a support member formed of magnetically permeable material, one surface of said support member having a partly spherical recess therein; a partly spherical body member formed on a radius corresponding to that of said recess and accommodated therein, said body member being formed of magnetically permeable material and having an opening therein in communication with an internal cavity in said body member; a liquid occupying said cavity; and a transparent closure for sealing said opening, said liquid being present in such an amount as to enable a gas bubble to form in said cavity, said body member being universally adjustable relative to said support member, and one of said members being magnetized thereby enabling said body member to be retained in said recess in any one of a plurality of selected positions of adjustment relative to said support member.
Claim 3
Dependent Claim
17 words
The construction according to claim 1 wherein said support member has a V-shaped notch in its bottom.
Claim 4
Dependent Claim
20 words
The construction according to claim 1 wherein said recess has a depth less than the height of said body member.
Claim 5
Dependent Claim
21 words
The construction according to claim 1 wherein said recess has a depth less than half the height of said body member.
Claim 6
Dependent Claim
21 words
The construction according to claim 1 wherein said body member has grooves extending diametrally of said recess and in communication therewith.
Claim 7
Dependent Claim
34 words
The construction according to claim 1 including an adapter having a pair of magnetically permeable legs normal to one another, either of said legs being capable of providing a seat for said support member.
Claim 8
Dependent Claim
16 words
The construction according to claim 6 including means for removably securing said adapter on a tool.
Claim 9
Dependent Claim
22 words
The construction according to claim 1 wherein said support member has a width less than the diametral dimension of said body member.
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) | 1988-10-14 | 1989-04-15 | 1989-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-14 | 1993-04-15 | 1993-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-14 | 1997-04-15 | 1997-10-15 | $7700.00 | Window Closed / Lapsed |