Patent JPS6435098A successfully refreshed from Google Patents.
US3880546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hole saw assembly
Assignee: B & C INDUSTRIES Inc
•
Filing: 1974-03-13
•
Granted: 1975-04-29
•
Expires: 1994-03-13
Abstract
Abstract A hole saw assembly including an arbor which comprises a stem, a body, a pilot drill carried by the body, and spring-loaded connecting means adapted to engage appropriate complemental locking means in the base of the cup-shaped hole saw. The hole saw has appropriate arcuate apertures in its base and appropriate inclined ramps which will, upon insertion and twisting movement of the arbor relatively of the saw, permit the spring-loaded locking means to be engaged by the ramps and snapped into place so as to secure the saw to the arbor in secure flush position. A modified form of the invention is also disclosed in which the spring-loaded locking means include fixed T-shaped studs or pins and ball detent means which also engage the base of the saw.
Inventors
- 👤 Fred Segal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:25
CPC Classifications
B; B23; B23B; B23B51/00; B23B51/04; B23B51/0473; B23B31/00; B23B31/02; B23B31/10; B23B31/113; Y; Y10; Y10S; Y10S408/00; Y10S408/703; Y10T; Y10T408/00; Y10T408/89; Y10T408/895
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
119 words
A hole saw assembly, comprising; A. an arbor having a forward planar face; B. a cylindrical cutting member having 1. a base with a rearwardly presented planar face 2. a cylindrical body and 3. cutting teeth on the forward edge of said body; C. locking and driving means 1. includiNg at least two T-shaped studs carried by said arbor and adapted to engage said base of said cutting member; and D. resilient means normally urging said locking and driving means toward said forward planar face of said arbor 1. whereby said arbor and said cutting member are interconnected with said forward planar face of said arbor in flush engagement with said rearwardly presented planar face of said cutting member.
Claim 2
Dependent Claim
119 words
A hole saw assembly, comprising; A. an arbor having a forward planar face; B. a cylindrical cutting member having 1. a base with a rearwardly presented planar face 2. a cylindrical body and 3. cutting teeth on the forward edge of said body; C. locking and driving means 1. includiNg at least two T-shaped studs carried by said arbor and adapted to engage said base of said cutting member; and D. resilient means normally urging said locking and driving means toward said forward planar face of said arbor 1. whereby said arbor and said cutting member are interconnected with said forward planar face of said arbor in flush engagement with said rearwardly presented planar face of said cutting member.
Claim 3
Dependent Claim
4 words
a cylindrical body and
Claim 4
Dependent Claim
4 words
a cylindrical body and
Claim 5
Dependent Claim
9 words
at least two opposed spring-loaded ball of said arbor
Claim 6
Dependent Claim
9 words
at least two opposed spring-loaded ball of said arbor
Claim 7
Dependent Claim
52 words
The assembly of claim 1 wherein A. said base of said cutting member has at least two opposed locking slots formed therein; B. said T-shaped studs being adapted to engage said slots and draw said rearwardly presented face of said cutting member into engagement with said forward planar face of said arbor.
Claim 8
Dependent Claim
4 words
a cylindrical body and
Claim 9
Dependent Claim
4 words
a cylindrical body and
Claim 10
Dependent Claim
14 words
said studs and said detents adapted to engage said base of said cutting member.
Claim 11
Dependent Claim
14 words
said studs and said detents adapted to engage said base of said cutting member.
Claim 12
Dependent Claim
51 words
The assembly of claim 2 further characterized by the presence of inclined camming ramps disposed along the edges of said slots and adapted to engage the heads of said T-shaped studs whereby said arbor will be drawn toward said cutting member upon movement of said studs along said inclined camming ramps.
Claim 13
Dependent Claim
15 words
cutting teeth on the forward edge of said body; C. spring-loaded locking and driving means
Claim 14
Dependent Claim
15 words
cutting teeth on the forward edge of said body; C. spring-loaded locking and driving means
Claim 15
Dependent Claim
14 words
cutting teeth on the forward edge of said body; C. locking and driving means
Claim 16
Dependent Claim
14 words
cutting teeth on the forward edge of said body; C. locking and driving means
Claim 17
Dependent Claim
48 words
The assembly of claim 3 wherein each of said locking slots have a locally enlarged area for reception of the heads of said T-shaped studs; the remaining length of said slots having a width dimension that is less than the diameter of the heads of said T-shaped studs.
Claim 18
Dependent Claim
25 words
The assembly of claim 4 wherein said slots extend on both sides of said enlarged areas; said camming ramps being disposed along the extended areas.
Claim 19
Dependent Claim
19 words
A hole saw assembly, comprising; A. an arbor having a forward planar face; B. a cylindrical cutting member having
Claim 20
Dependent Claim
19 words
A hole saw assembly, comprising; A. an arbor having a forward planar face; B. a cylindrical cutting member having
Claim 21
Dependent Claim
47 words
The assembly of claim 6 wherein said base of said cutting member has A. at least two oppositely disposed slots each having an enlarged area capable of receiving the heads of said T-shaped studs; and B. at least two oppositely disposed apertures adapted to engage said detents.
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) | 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 |